explain xkcd - User contributions [en]

User:BetaOS

2022-05-26T17:59:35Z

BetaOS: Created page with "This is a user page, I think. Hello. I'm BetaOS. Also known as betatester1024 in &xkcd. I mitose sometimes, and you may find me with a large hoard of pans. Don't be alarmed,..."

This is a user page, I think.

Hello. I'm BetaOS. Also known as betatester1024 in &xkcd.
I mitose sometimes, and you may find me with a large hoard of pans. Don't be alarmed, they're mostly harmless. I'm mostly here for undoing recent crapping of wiki-pages.

Thanks for stopping by!

[[User:BetaOS|BetaOS]] ([[User talk:BetaOS|talk]]) 17:59, 26 May 2022 (UTC)
(this is still really fun to do)

User talk:BetaOS

2022-05-26T17:56:14Z

BetaOS:

Thank you for helping revert vandalism. You can sign your comments with four tildes ('<nowiki>~~~~</nowiki>'). [[User:Vandalbane|Vandalbane]] ([[User talk:Vandalbane|talk]]) 17:54, 26 May 2022 (UTC)
:Thanks! [[User:BetaOS|BetaOS]] ([[User talk:BetaOS|talk]]) 17:55, 26 May 2022 (UTC) (whoa, it works! :D)

User talk:BetaOS

2022-05-26T17:55:55Z

BetaOS:

327: Exploits of a Mom

2022-05-26T17:50:51Z

BetaOS: Undo revision 278379 by Donald Trump (talk)

{{comic
| number = 327
| date = October 10, 2007
| title = Exploits of a Mom
| image = exploits_of_a_mom.png
| titletext = Her daughter is named Help I'm trapped in a driver's license factory.
}}

==Explanation==
[[Mrs. Roberts]] receives a call from her [[Little Bobby Tables|son]]'s school. The caller, likely one of the school's administrators, asks if she really named her son <code>Robert'); DROP TABLE Students;--</code>, a rather unusual name. Perhaps surprisingly, Mrs. Roberts responds in the affirmative, claiming that she uses the nickname "Little Bobby Tables." As the full name is read into the school's system's databases without {{w|Data sanitization#SQL injection|data sanitization}}, it causes the "Students" table in the database to be dropped, meaning it gets deleted.

The title of this comic is a pun. ''Exploit'' can mean an accomplishment or heroic deed, but in computer science, the term refers to a program or technique that takes advantage of a vulnerability in other software. In fact, one could say that her exploit is to exploit an exploit (her achievement is to make use of a vulnerability). The title can also refer to her choice of name for her son, which is rather extraordinary.

In {{w|SQL}}, a database programming language, commands are separated by semicolons <code>;</code>, and strings of text are often delimited using single quotes <code>'</code>. Parts of commands may also be enclosed in parentheses <code>(</code> and <code>)</code>. Data entries are stored as "rows" within named "tables" of similar items (e.g., <code>Students</code>). The command to delete an entire table (and thus every row of data in that table) is <code>DROP TABLE</code>, as in <code>DROP TABLE Students;</code>.

The exploited vulnerability here is that the single quote in the name input was not correctly "escaped" by the software. That is, if a student's name did indeed contain a quote mark, it should have been read as one of the characters making up the text string and not as the marker to close the string, which it erroneously was. Lack of careful parsing is a common SQL vulnerability; this type of exploit is referred to as {{w|SQL injection}}. Mrs. Roberts thus reminds the school to make sure that they have added data filtering code to prevent code injection exploits in the future.

For example, to add information about Elaine to a data table called 'Students', the SQL query could be:
 <code>INSERT INTO Students (firstname) VALUES ('Elaine');</code>

However, using the odd name <code>Robert');DROP TABLE Students;-- </code> where we used "Elaine" above, the SQL query becomes:
 <code>INSERT INTO Students (firstname) VALUES ('Robert');DROP TABLE Students;-- ');</code>

By insertion of the two semi-colons in the odd name, this is now three well-formed SQL commands:
 <code>
INSERT INTO Students (firstname) VALUES ('Robert');

DROP TABLE Students;

-- ');
</code>

The first line is valid SQL code that will legitimately insert data about a student named Robert.

The second line is valid injected SQL code that will delete the whole Student data table from the database.

The third line is a valid code comment (<code>-- </code> denotes a comment), which will cause the rest of the line to be ignored by the SQL server.

For this to work, it helps to know the structure of the database. But it's quite a good guess that a school's student management database might have a table named <code>Students</code>.

Of course, in real life, most exploits of this kind would be performed not by engineering a person's name such that it would eventually be entered into a school database query, but rather by accessing some kind of input system (such as a website's login screen or search interface) and guessing various combinations by trial and error until something works, perhaps by first trying to inject the <code>SHOW TABLES;</code> command to see how the database is structured.

To correctly and harmlessly include the odd name in the Students table in the school database the correct SQL is:
 <code>INSERT INTO Students (firstname) VALUES ('Robert<nowiki>''</nowiki>);DROP TABLE Students;-- ');</code>

Note that the single quote after Robert is now sanitized by doubling it, which changes it from malicious code to harmless data, and the full first 'name' of the student <code>Robert';DROP TABLE Students;--</code> is now stored correctly.

It should be noted that while data sanitization can mitigate the risks of SQL injection, the proper prevention technique is to use {{w|Prepared statement}}s.

Noting the difference between the "actual" name using the word TABLE and the child's nickname being Bobby Tables, one could argue that there's an implied reference to one of the most argued topics of database naming conventions - should table names be singular or plural.

The title text references that Mrs. Roberts' daughter is named "Help I'm trapped in a driver's license factory". This is a play on how if someone is stuck and forced to work in a manufacturing factory/plant, then they will write on the product {{tvtropes|HelpHelpTrappedInTitleFactory|"Help I am trapped in a ____ factory"}} in order to tell people on the outside. Having this name would cause any police officer who pulls her over to show some concern. And getting the license in the first place would likely be difficult. The idea of inserting a help message like this was already used in [[10: Pi Equals]].



==Transcript==
:[Mrs. Roberts receives a call from her son's school on her wireless phone. She is standing with a cup of hot coffee or tea (shown with a small line above the cup) facing a small round three-legged table to the right. The voice of the caller is indicated to come from the phone with a zigzag line.]
:Voice over the phone: Hi, This is your son's school. We're having some computer trouble.

:[In this frame-less panel Mrs. Roberts has put the cup down on the table turned facing out.]
:Mrs. Roberts: Oh, dear – did he break something?
:Voice over the phone: In a way –

:[Mrs. Roberts is now drinking from the cup again looking right. The table is not shown.]
:Voice over the phone: Did you really name your son <code>Robert'); DROP TABLE Students;--</code> ?
:Mrs. Roberts: Oh, yes. Little Bobby Tables, we call him.

:[Mrs. Roberts holds the cup down.]
:Voice over the phone: Well, we've lost this year's student records. I hope you're happy.
:Mrs. Roberts: And I hope you've learned to sanitize your database inputs.

==Trivia==

This comic has become rather famous, spawning a site at http://bobby-tables.com about preventing SQL injection and also at the official [https://docs.python.org/2/library/sqlite3.html Python SQLite documentation]. Noted security expert {{w|Bruce Schneier}} (who often quotes xkcd) [https://www.schneier.com/blog/archives/2010/10/pen-and-paper_s.html mentioned a similar attack] that happened in the 2010 Swedish general elections, and [https://blog.xkcd.com/2010/05/03/color-survey-results/ several people tried it on Randall's color survey].

In [[1253: Exoplanet Names]], someone (presumably Mrs. Roberts) attempts to perform a similar trick, submitting the name <code>e'); DROP TABLE PLANETS;--</code> to the IAU.

It is later revealed in [[342: 1337: Part 2]] that the daughter's middle name is [[Elaine]] (full name: ''Help I'm trapped in a driver's license factory Elaine Roberts''). This is thus the first time Elaine is mentioned. This comic was, presumably, a setup for the "[[:Category:1337|1337]]" series where both of the hacker mom's kids are shown for the first time.

This comic is available as a signed print in the [https://store.xkcd.com/products/signed-prints xkcd store].

In 2020 this happened in real life: [https://www.engadget.com/compan-changes-name-over-website-hack-risk-215412415.html Company made to change name that could be used for website hacks].

{{comic discussion}}

[[Category:Comics featuring Mrs. Roberts]]
[[Category:Comics featuring Little Bobby Tables]]
[[Category:Comics featuring Elaine Roberts]]
[[Category:Programming]]
[[Category:Computers]]
[[Category:Comics with xkcd store products]]

1644: Stargazing

2022-05-26T17:50:23Z

BetaOS: Undo revision 277739 by Donald Trump (talk)

{{comic
| number = 1644
| date = February 17, 2016
| title = Stargazing
| image = stargazing.png
| titletext = Some of you may be thinking, 'But wait, isn't the brightest star in our sky the Sun?' I think that's a great question and you should totally ask it. On the infinite tree of possible conversations spread out before us, I think that's definitely the most promising branch.
}}

==Explanation==
This is the first comic in the [[:Category:Stargazing|Stargazing]] series. It was followed by [[2017: Stargazing 2]] two and a half years later and [[2274: Stargazing 3]] four years later.

This comic opens on [[Megan]] as the host for a {{w|stargazing}} TV show, or simply a stargazing tour. She claims to be a doctor in {{w|astronomy}} though her remarks, however enthusiastic, may call this into question. (Originally the host was suspected to be a spoof on {{w|Brian Cox (physicist)|Brian Cox}}, see [[#Relevant TV-shows|below]], but at some later point [[Randall]] changed his official transcript thus making the host female rather than male as in the original version, see the [[#Trivia|trivia]] section below. Thus now the host is clearly Megan, which it could not have been originally when the host was described as a man by Randall).

Throughout the comic the host's tone and choice of words becomes increasingly unprofessional, referring to most of the stars as "shitty," personifying them based on different astronomical observations, and providing little useful information on the study of stars or how they work.

It seems that this is not an isolated issue as the television host mentions that people keep asking her whether or not she is a real astronomer.

The host also continuously glosses over the arguably less exciting portions of a typical presentation on astronomy sharing only what she sees as "the good stuff." This penchant for only caring about something if it is interesting extends past astronomy as well as the host is too bored when reading the dictionary to look up the meaning of astronomer.

The comic derives much of its humor from the absurdity of the host's comments on various astronomical bodies. Although not technically incorrect, the way she presents the information is far from informative. (See details below on [[#The host's observations|the host's observations]]).

One of her observations regards the fact that {{w|Sirius}} is a {{w|binary star}}, a system where two stars orbit each other. So even though it is the brightest star as seen from Earth we only really see one of them, as the other is, to quote the host, "not even trying". Sirius A is "large" and "bright" {{w|main sequence}} white star, while Sirius B is a {{w|white dwarf}} with a little under half the mass, 0.49% the radius and only 0.22% the luminosity of Sirius A.

{{w|Andromeda Galaxy|Andromeda}} is the largest galaxy in our {{w|Local Group}}. It is 220,000 light years across and contains a trillion stars. Humans have difficulty conceptualizing distances of this scale. Suffice to say that it is very large.{{Citation needed}}

{{w|Betelgeuse}} is the 9th brightest star visible from earth. One of its prominent features is its visible redness. Within the next million years (or maybe only 100,000 years) it is expected to explode as a {{w|supernova}}, which will certainly be a spectacular sight. It could happen anytime now, and the host hopes it will be in her lifetime.

In the title text it is mentioned that the {{w|Sun}} is also a star and of course is much brighter than Sirius seen from Earth, and thus Sirius is technically not the brightest star in our sky (although it is in the night sky). The title text sarcastically encourages the audience to raise that obvious but irrelevant point (a standard joke when people mention bright stars) instead of asking a more interesting, informative, or fruitful question, when there are so many to ask regarding astronomy.

See also [[1371: Brightness]] and [[1342: Ancient Stars]]. Saying cool things about space to make people like you is mentioned in [[1746: Making Friends]].

===The host's observations===
Here is a list of the host's observations:
*Most {{w|Bright Star Catalogue|visible stars}} are still very faint, and just become background to the bright {{w|stars}} that form the named {{w|constellations}}.
**The host correctly states that they are just dots. (This is also true for the bright stars, but at least they are clearly distinguishable).
*{{w|Sirius}} is the {{w|Apparent magnitude|brightest}} star in our {{w|List of brightest stars|night sky}}. But it is not the brightest object in the night sky, as several of the planets, especially {{w|Venus}} and {{w|Jupiter}}, and of course the {{w|Moon}} are much brighter. It is also far from being one of the most {{w|Absolute magnitude|luminous stars}} in the {{w|Milky Way}}, but its proximity to Earth makes it the brightest in the night sky. There are {{w|List_of_most_luminous_stars#Data|twenty visible stars}} that are more luminous than Sirius, {{w|List of most luminous stars|none of which}} come even close to being in the top 100 of the most luminous stars observed today.
**The host thus names Sirius as the star in charge since it outshines all the others as seen from the {{w|Earth}}.
*Sirius is actually a star system consisting of two stars as it is a {{w|binary star}} system. But where Sirius A is twice the size of the {{w|Sun}} and much brighter, then Sirius B is now just a dim {{w|white dwarf}}, the remains from a much larger star that became a {{w|red giant}} before shedding its outer layers and collapsing into its current state around 120 million years ago. So now Sirius A completely outshines Sirius B, which actually is now a dead star with no further fusion going on inside its core.
**This is construed by the host as it is barely even trying, as it is now only radiating away the rest of the heat from the now exposed core.
*{{w|Andromeda Galaxy|Andromeda}} is a {{w|spiral galaxy}}, like the Milky Way, and it is the largest galaxy in the {{w|Local Group}} where our own galaxy the Milky Way is the second largest. It is one of a few visible objects that are located outside the Milky Way. It is "only" 2.5 million light-years from the Sun and it is heading our way (or vice versa), and will {{w|Andromeda–Milky Way collision|collide with the Milky way}} in about 4 billion years (before the Sun goes into {{w|Sun#After_core_hydrogen_exhaustion|its red giant phase}}). Being 220,000 light years across and consisting of a trillion stars, it is somewhere between 1.2-2.2 times wider than the Milky Way and has 2.5-10 times as many stars. (The local group was also mentioned two comics ago, in [[1642: Gravitational Waves]], together with the much less well known third largest galaxy in the group the {{w|Triangulum Galaxy}}).
**It is therefore true when the host says that it is too big to try to understand, and thinking about it will make your head spin, so she suggests we do not think about it.
*{{w|Betelgeuse}} is a clearly visible (9th brightest) {{w|Red_supergiant|red supergiant}} {{w|Semiregular_variable_star|variable star}} located in the {{w|Orion (constellation)|constellation of Orion}}. It is one of the largest and most luminous observable stars (12th) and one of the few where it is clear that the light is not white. Most people can see that it is slightly red, whereas most other stars are so faint that they look white despite having different colors (when seeing Orion's two brightest stars, to remember which is which between Rigel and Betelgeuse, its diagonal opposite, just remember: Rigel is "R" like blue, and Betelgeuse is "B" like red). It is expected that Betelgeuse, being at a late stage of its {{w|Stellar_evolution|evolution}}, {{w|Betelgeuse#Approaching_supernova|will go supernova}} within the next million years as a {{w|type II supernova}}. The exact time when it will become a {{w|Supernova}} is so uncertain that it could [http://earthsky.org/brightest-stars/betelgeuse-will-explode-someday#explode just as likely happen tomorrow] as in a million years. When it happens it will not be dangerous to anyone on Earth, but it will likely be visible even during the day, as it may even become as bright as the full Moon.
**When it does go nova, it will be a fantastic spectacle for everyone, but especially for anyone who likes the ''good stuff'' in space like the host, who cannot wait for the star to explode. Clearly she hopes it will be in her lifetime, and, although this is unlikely, there is a small chance that it might just happen.
*A {{w|meteor}} (also known as {{w|shooting star}}), is debris from space that rains down on Earth, and burns up in the atmosphere. This happens all the time, but you need to be either lucky, patient, or know the right time for one of the {{w|meteor showers}} to see one. Often they are visible for so short a time period, that it is difficult to share the experience with anyone, as it will be gone by the time they turn their head to look where you are pointing.
**The host becomes very excited when she spots such a meteor, especially because it is likely that her audience got to share the experience with her, as they were already looking in the same direction as her. But still she asks if they saw it, because it is so short lived.
*{{w|Outer space}} is the void that exists between {{w|Astronomical object|celestial bodies}}, including the Earth. There is by definition nothing there but {{w|vacuum}}, and the interesting part of space is thus not the space but the astronomical objects found out there.
**The host says that ''space is cool'', which is a very un-astronomical comment, as explained above. Also her excitement for a simple shooting star is cause for the suspicion that is raised after her space comment.

===Relevant TV-shows===
The comic could be a reference to BBC's ''{{w|Stargazing Live}}'', which {{w|Brian Cox (physicist)|Brian Cox}} has appeared in since 2011. If drawn in xkcd style he would likely look like Megan. He has a PhD in high-energy {{w|particle physics}}, but not astronomy. The newest season of the show aired during January 2016 just a month before this comic's release. Brian Cox has also been the presenter of several other science programs, especially such as the ''{{w|Wonders of the Solar System}}'', ''{{w|Wonders of the Universe}}'' and ''{{w|Wonders of Life (TV series)|Wonders of Life}}''. Originally the host was described as male in the official transcript (see [[#Trivia|trivia]] below, making this seem more likely. for some reason Randall changed the host to female in the transcript later. Very strange, but for sure when he was male, it was obviously a Brian Cox spoof.

It could also be a reference to {{w|Jack Horkheimer}}'s PBS shows ''Star Hustler'' and ''{{w|Star Gazers}}''. Horkheimer, however, does not at all look like Megan, and he died 6 years ago. But he was not a doctor in astronomy, only getting into it when he started volunteering at the Miami Museum of Science's planetarium. He ended up writing shows for the planetarium and the PBS series developed from there. He rarely covered facts about the night sky that couldn't be found in any basic reference (possibly because the show was aimed at children and non-astronomy buffs), although he did get more in-depth about current astronomical events such as {{W|Comet Hale–Bopp}}.

==Transcript==
:[A thin panel with Megan as a TV-host is holding her hands up. She is drawn in white on a black background. Behind her is an audience drawn in faint gray lines consisting of Hairy (to the left) and two Cueball-like guys and Ponytail (seen in a rare full face position) to the right of the host. One of the Cueball-like guys is partly hidden behind the host.]
:Host: Welcome to stargazing, with your host, me.
:Host: I'm a doctor or whatever.

:[Same scene as before but in a broader panel, and the host is now holding only one hand up with a finger pointing up. The audience is the same four people, but now Hairy has moved further to the left in the panel to make room for a Megan-like woman also to the left of the host.]
:Host: I'm not gonna waste your time on the shitty stars.
:Host: Just the good stuff.
:Host: Honestly half of 'em just look like dots.

:[A frame-less drawing with a zoom out showing the group of six people in black silhouette on a white background. Part of the ground beneath them is shown as a black pool. The host is pointing up with one hand. The people have been rearranged, so left of the host is now a Cueball-like guy and a Megan-like woman, and to the right is the other Cueball-like guy, then Ponytail (seen from the side as usual) and Hairy. All are looking up following the host's directions.]
:Host: This is Sirius. It's the brightest star in our sky so it's in charge.
:Host: It's really two stars but one of them is barely even trying.
:Host: This is Andromeda, it's too big to think about, so let's not.

:[Zoom in of the host's upper body, again drawn in white on a black background. She is looking right gesturing with one arm raised, and the other still pointing up with a finger stretched out. Her audience is no longer shown.]
:Host: That red stars is Betelgeuse. It's gonna explode someday.
:Host: Can't happen soon enough, as far as I'm concerned. I-
:Host: ''Holy shit did you see that meteor!?!''
:Host: Space is ''awesome!''

:[Same scene as the previous panel, but the host has turned towards left looking at someone in the audience (not shown) who speaks off-screen. She has taken both her hands down for the first time.]
:Off-screen voice: Are you ''sure'' you're an astronomer?
:Host: People keep asking that, so I finally tried to look that word up in a dictionary, and ''wow'' is that book ever boring. No thank you.
:Off-screen voice: But-
:Host: ''Space!''

==Trivia==
*Randall changed the [http://www.explainxkcd.com/wiki/images/archive/4/48/20160221022727!stargazing.png original] posted version of the comic.
**The only thing that changed was in the third panel where '''''That's''' Andromeda'' was changed to the current version: '''''This is''' Andromeda''
*The official transcript [https://web.archive.org/web/20160913162302/http://xkcd.com/1646/info.0.json originally] used male pronouns for the TV host. It now (as of 2019) uses female pronouns for the host.
**The official transcripts seems to have been messed up on xkcd at the time being.
***The [http://xkcd.com/1644/info.0.json transcript for 1644] is thus at the moment a mix of that comics main info (top and bottom) which results in the correct title and title text, but the entire description in this transcript is describing the comic from two releases before no. [[1642]].
***This seems to be a general problem for comics released around that time...
***Thus the description of this comic, was first released when comic no. [[1646]] came out.
***This has not been corrected (4 years later at the time of writing)!
****So the official transcript for 1644 can be found [http://xkcd.com/1646/info.0.json here], together with the data for comic 1646.
**The current transcript is included here below:
::(Inverse color panel - white on black)
::[A television host in the foreground, speaking toward the reader. A group of other people are in the background behind them.]
::Host: Welcome to Stargazing, with your host, me. I'm a doctor or whatever.
::[She continues to talk.]
::Host: I'm not gonna waste your time on the shitty stars. Just the good tuff. Honestly half of 'em just look like dots.
::(Normal color panel - black on white)
::[A shot from far away of the host standing in the center of the group of people watching her, she points to the sky.]
::Host: This is Sirius. It's the brightest star in our sky so it's in charge. It's really two stars, but one of them is barely even trying. This is Andromeda. It's too big to think about, so let's not.
::(Inverse color panel)
::[Close-up on the host gesturing toward the sky behind her.]
::Host: That red star is Betelgeuse. It's gonna explode someday. Can't happen soon enough, as far as I'm concerned. I--
::HOLY SHIT DID YOU SEE THAT METEOR?!?!
::Space is awesome!
::[The host speaks to someone out of panel.]
::Other: Are you sure you're an astronomer?
::Host: People keep asking that, so I finally tried to look that word up in a dictionary, and wow is that book ever boring. No thank you.
::Other: But--
::Host: SPACE!
:*The original official transcript with male host is included here below (correcting a typo with a missing "s" in "stuff" and formatting to look like our normal transcripts):
::[A television host in the foreground, speaking toward the reader. A group of other people are in the background behind them.]
::Host: Welcome to Stargazing, with your host, me. I'm a doctor or whatever.
::[He continues to talk.]
::Host: I'm not gonna waste your time on the shitty stars. Just the good stuff. Honestly half of 'em just look like dots.
::[Normal color panel - black on white. A shot from far away of the host standing in the center of the group of people watching him, he points to the sky.]
::Host: This is Sirius. It's the brightest star in our sky so it's in charge. It's really two stars, but one of them is barely even trying. This is Andromeda. It's too big to think about, so let's not.
::[Inverse color panel. Close-up on the host gesturing toward the sky behind him.]
::Host: That red star is Betelgeuse. It's gonna explode someday. Can't happen soon enough, as far as I'm concerned. I-- ''HOLY SHIT DID YOU SEE THAT METEOR?!?!'' Space is ''awesome''!
::[The host speaks to someone out of panel.]
::Other: Are you ''sure'' you're an astronomer?
::Host: People keep asking that, so I finally tried to look that word up in a dictionary, and ''wow'' is that book ever boring. No ''thank'' you.
::Other: But--
::Host: ''SPACE!''

{{comic discussion}}

[[Category:Stargazing]]
[[Category:Comics sharing name|Stargazing]]
[[Category:Comics with inverted brightness]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Hairy]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Multiple Cueballs]]
[[Category:Astronomy]]
[[Category:Space]]

1534: Beer

2022-05-26T17:49:32Z

BetaOS: Undo revision 277106 by Donald Trump (talk)

{{comic
| number = 1534
| date = June 5, 2015
| title = Beer
| image = beer.png
| titletext = Mmmm, this is such a positive experience! I feel no social pressure to enjoy it at all!
}}

==Explanation==
[[Hairy]] offers [[Cueball]] some {{w|beer}} from his fridge, and Cueball takes the opportunity to suggest that people should admit that beer tastes bad and stop pretending to like it. Hairy berates Cueball for making such an affirmation, and Cueball admits defeat, deciding to drink the beer anyway and pretend to like it to play his part in what he perceives to be a mass delusion.

There are two possible interpretations of this comic. One is that Cueball is right and that no one really likes beer, and everyone is just pretending in order to fit in. The other is that Hairy actually likes beer, but Cueball fails to recognize that possibility, assumes Hairy is faking it, and plays along.

In the case where Cueball is correct, the comic would imply that beer doesn't actually taste good, and people instead pretend to like beer to conform to social norms. The theory is that this pretense is perpetuated by advertising and {{w|peer pressure}}, which present beer as a naturally pleasant beverage. In this interpretation, Cueball, having failed to break the [https://www.youtube.com/watch?v=5S1d3cNge24&t=47m34s mutual knowledge barrier], admits defeat and joins Hairy in pretending to enjoy beer.

The second case would mean that Cueball mistaken in assuming that nobody likes beer, either because he fails to {{w|empathy|empathize}} with those who have a different experience than his, or because he's heard from other people who also admitted not to like beer, and extrapolated that opinion to everyone (perhaps assuming that such admissions are underrepresented due to the {{w|Drinking culture|cultural bias in favor of drinking}}).

The title text expands on Cueball's perspective, stating ({{w|sarcastic|sarcastically}}) that he feels no peer pressure to like beer. The pressure to drink beer or other alcoholic drinks is a well-known phenomenon, especially among {{w|Peer pressure#Substance use and adolescents|adolescents and young adults}}.

==Transcript==
:[Cueball and Hairy standing in front of a fridge.]
:Hairy: What do you drink? Stouts? Lagers?
:Cueball: Uh, anything's fine.

:[Cueball and Hairy holding beers and Hairy is drinking.]
:Cueball: ...do you ever think maybe we should just admit that all beer tastes kind of bad and everyone's just pretending?

:[Now Cueball drinks.]
:Hairy: Man, you are ''no'' fun at all.
:Cueball: Ok, got it. Not a word.
:Hairy: Dude, if you don't like it, don't drink it.
:Cueball: No, no, gotta do my part! Mmmmm!!!

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Hairy]]
[[Category:Sarcasm]]
[[Category:Food]]

1732: Earth Temperature Timeline

2022-05-26T17:49:01Z

BetaOS: Undo revision 278718 by Donald Trump (talk)

{{comic
| number = 1732
| date = September 12, 2016
| title = Earth Temperature Timeline
| before = [[#Explanation|↓ Skip to explanation ↓]]
| image = earth_temperature_timeline.png
| titletext = [After setting your car on fire] Listen, your car's temperature has changed before.
}}

{{TOC}}
==Explanation==
This comic is a [[:Category:Timelines|timeline]] on how the temperature has changed from 20,000 BCE (Before {{w|Common Era}}) to the present day (2016), with three predictions for the rest of the 21st century depending on what actions are taken (or not taken) to stop CO₂ emission. This comic is a direct, but much more thorough, follow up on the previous global warming comic: [[1379: 4.5 Degrees]]. By having readers scroll through millennia of slow-paced natural changes, Randall uses the comic to confront the rapid temperature rise in recent years.

Over the past 100 years, human action has produced a large amount of {{w|CO₂ emissions}}, which have caused a rise in average global temperature through the {{w|greenhouse effect}}. This is called {{w|global warming}} and is part of a {{w|climate change}}, a subject that has become a [[:Category:Climate change|recurrent subject]] on xkcd. There are still many people who claim that this is not happening, or at least that it is not caused by any human actions, called {{w|Climate change denial|climate change deniers}}. One argument of theirs is that global warming is happening for natural causes, summarized with the phrase "temperature has changed before".

This comic shows that while temperature changes have indeed occurred before, the speed of the current temperature rise is much, much faster than those measured for many previous thousands of years. The comic became so popular that [[Randall]] [[#Popularity_of_comic|postponed the release]] of his next comic to keep this one on the front page one day longer.

The temperature curve is a dotted line most of the time, but from about 1850 to 2016 the measurement data is good enough to let the curve become a solid line indicating that this is not an estimate. Before 1850 the temperature is an estimate based on the [[#Sources|sources]] given. And likewise into the future the three possible curves are also dotted to show that they are predictions, based on how seriously the population of Earth takes knowledge (and comics) like this.

Although this is a topic Randall obviously takes very seriously, and by far most of the facts fit with known history, he still includes several [[#Jokes in the comic|jokes in the comic]]. See also the [[#Table of all elements|table]] explaining each item in the comic. After the election of {{w|Donald Trump}} for president later the year of this comic's release, it is possible that Randall believes that his worst fears (as expressed by the current path at the bottom) will hold up, with the actions taken by the new president.

The title text compares the saying that "the temperature has changed before" comparing temperature changes over thousands of years to the rapid global warming over the last century with saying that the "small" changes to the temperature a car experiences over the years of normal usage should not make you worried over the rapid temperature increase that happens when someone sets your car on fire. Randall previously used this joke in [[1693: Oxidation]].

===Jokes in the comic===
* By placing the invention of the internet at 1980 in the chart, just where the temperature curve starts its most rapid increase, Randall humorously implies that the internet caused the rise in temperature.
* At 13600 BCE a glacier is shown retreating from New York because of the warm up. It is disgusted by the new changes and proclaims: ''That’s it! I’m moving to Canada!'' This is a joke on [https://www.rollingstone.com/politics/politics-news/want-to-move-to-canada-if-trump-wins-not-so-fast-100658/ an idiom said by US citizens] to protest against changes in their country. As shown in the chart, the glacier takes 5000 years (13600-8400 BCE) to cross what would become the Canadian border (neither the United States nor Canada existed yet).{{citation needed}} Also, glaciers don't speak English, or any language for that matter.{{Citation needed}}
* At 13400 BCE it is mentioned that {{w|origin of the domestic dog|humans domesticate dogs}}. [[Megan]] talks to a wolf about to be tamed making a deal with it, that it can eat and sleep with the humans as long as they can yell at it for pooping indoors. This sounds like a sweet deal for the wolf until [[Cueball]] mentions that they will {{w|Dog breeding|breed}} it to be {{w|Chihuahua (dog)|very small}} and then dress it up in small {{w|Dog's fashion|costumes}}. The wolf says wait, but it is already too late...
* The {{w|Pokémon}} reference at 9000 BCE about them going extinct in North America (although Megan, immediately underneath, does note that this is not a real fact). As the writing stated that ''Pokemon go extinct'' this can also be seen as a reference to a popular video game called {{w|Pokémon Go}} and hence also the comic [[1705|1705: Pokémon Go]].
* At 4500 BCE, next to "{{w|Proto-Indo-European language}} develops", [[Ponytail]] gets the idea to develop the language heavily inflected to make it difficult to remember all the verb endings for future students. This is a direct reference to the comic [[1709: Inflection]].
* The reference to the 1984 {{w|mockumentary}} about the fake rock band {{w|This Is Spinal Tap}} in conjunction with {{w|Stonehenge}} at 2200 BCE. In the movie the band ordered a giant 18 feet Stonehenge megalith but a writing mistake gives them one that is only 18 inches high.
**Another real band {{w|Nine Inch Nails}} is referenced 16000 BCE where Megan writes the band's stylized name NIИ on the wall next to [[Hairy]] who is in the process of painting the {{w|cave painting}} at {{w|Lascaux}} in France.
* Around the setting of the {{w|Iliad}} and the {{w|Odyssey}} (1200 BCE) a drawing of the {{w|Trojan Horse}} has writing on it that states: ''Not a trap''.
* Just below the previous entry also at 1200 BCE is the mentioning of the invasion of the {{w|Sea Peoples}}. This sounds so much like a reference to {{w|Mermaid|mermaids}}, often called {{w|Mermaid#One_Thousand_and_One_Nights|sea people}} that Randall feels the need to note that this invasion and these sea people is ''a real thing'' in a footnote. This is opposed to the Pokémon reference above where he notes that it is ''not a real fact''. The sea people was a seafaring confederation of groups known to have attacked ancient Egypt and other Bronze age civilizations around this time. It is widely regarded to be one of the major causes of the {{w|Late Bronze Age collapse|Bronze Age Collapse}}.
* The reference at 450 BCE compares the {{w|Battle of Thermopylae}} (also known as 300 Spartans) with the dramatized 2007 movie ''{{w|300 (film)|300}}'', but in the real world the fighting of course occurred [https://youtu.be/FCfdyroV7kc?t=12 at regular speed and with more clothing].
*There are other minor jokes but this list mentions all the major jokes.

===Table of all elements===
*Here is table including all elements in the chart with explanations including reading off temperature and year for each event from the curve.
**The year group is just an easy way to find the section.
**Element is a description mainly taken from the transcript.
**The actual year of an event has been read off more precisely on the chart.
***The central part of the element has mainly been used.
***Only rarely has ranges below 100 years been used but if a location is clearly midway between two hundred years intervals 50 year range has been used.
***Only when there are several posts close to each other has smaller range been used a few times.
**T (°C) is the number of degrees Celsius above or below the 1961-1990 average, which on this graph is set to zero, (i.e. not the number of physical degrees above or below this 0°C).
***These have been read of to 0.1°C rounding up or down. Lines have been inserted over the chart, 10 for each degree, to make this as accurate as possible.
***In a few cases where a maximum is reached 0.05°C has been used
**Explanation of each element.
{| class="wikitable"
!Year group
!Element
!Year
!T (°C)
!Explanation
|-
| rowspan="2"| 20000 BCE
| [An arrow goes from the dotted line to the central line at 0°C (representing the 1961-1990 average). In the middle of the line there is a temperature label:] 4.3°C At the start of our timeline, 22,000 years ago, Earth is 4°C colder than during the late 20th century. || 20000 BCE || -4.3 || The scale here is relative, showing the magnitude of change rather than an absolute temperature reading. As a rule, {{w|climate}} changes are compared with a 30 year interval, and the 1961-1990 average was {{w|Climate#Definition|chosen for convenience}} as the "normal" to compare temperature changes with, but any other choice of baseline would show the exact same changes. The {{w|Last glacial period}} (aka ice age) reached its {{w|Last Glacial Maximum|maximum extent}} approximately 22 to 24 thousand years ago.
|-

| {{w|Boston}} is buried under almost a mile of ice, and the {{w|glaciers}} reach as far south as {{w|New York City}}. [The Statue of Liberty is shown in front of a glacier front. [[Knit Cap]] is seen in the snowy landscape. The skyline of Boston is shown under a half a mile of ice.] || 19700 BCE || -4.3 || This shows what a difference 4 degree in global temperature means (massive effect), as opposed to four degrees on a daily weather wise scale (trivial). The Boston image is directly taken from [[1225: Ice Sheets]] about the ice age glacier coverage; it was also shown buried in ice in [[1379: 4.5 Degrees]].
|-
| rowspan="3"| 19500 BCE
| But the world is about to warm up. || 19500 BCE|| -4.3 || The warming process actually takes thousands of years, which this comic will portray down thousands of pixels to come. This is not a fast warm up, especially not compared to the one we are currently experiencing (at the bottom of the chart).
|-
| By this time, humans have already spread across {{w|Africa}}, {{w|Eurasia}}, and {{w|Australia}}. || 19300 BCE || -4.3 || {{w|Homo Sapiens}} successfully {{w|Recent_African_origin_of_modern_humans#Movement_out_of_Africa|migrated out of Africa}} somewhere between {{w|Recent_African_origin_of_modern_humans#Dating:_pre-or_post-Toba|130,000}} and {{w|Recent_African_origin_of_modern_humans#Coastal_route|70,000}} BCE.
|-
| They’ve created {{w|painting}}, {{w|pottery}}, {{w|rope}}, and {{w|Bow and arrow|bows and arrows}}, but haven’t developed {{w|writing}} or {{w|farming}}. || 19100 BCE || -4.3 || The {{w|History of painting#Pre-history|oldest known paintings}} date back to about 38,000 BCE. The {{w|Ceramic_art#History|oldest known pottery}} date back to about 20,000 BCE. The {{w|Rope#History|oldest known rope}} date back to about 26,000 BCE. The {{w|History_of_archery#Stone_Age_and_Bronze_Age_archery|oldest known arrows}} date back to about 70,000 BCE, but Randall seems to be mistaken about the bows which seems to be {{w|History_of_archery#Stone_Age_and_Bronze_Age_archery|at most 10,000 years old}}. Writing is mentioned again at 3500 BCE and farming at 10,000 BCE.

|-
| rowspan="2"| 19000 BCE
| Changes in the Earth’s orbit mean that more sunlight reaches the polar ice… || 18600 BCE || -4.2 ||{{w|Milankovitch cycles}} are repeated climate variations on a timescale of tens of millennia caused by cyclic variations in {{w|Orbital eccentricity|eccentricity}}, {{w|axial tilt}}, and {{w|precession}} of the {{w|Earth's orbit}}, which thus then determined climatic patterns on Earth. The Milankovitch cycles are referenced again around 4700 BCE.

|-
| [A line chart with a labeled Y-axis "Summer sun W/m2 at 60°N" with three labeled ticks ranging from 450-550. The curve starts up and then goes down five times and up four times ending down. There is one plateau towards the end compared to the rest of the curve where the ups and downs are quite alike.] || 18600 BCE || -4.2 || The chart shows the input of sun during summer time in the {{w|Northern hemisphere}} (at {{w|60° northern latitude}}) as the effect (W) per square meter (m2) which fluctuated in the range from 450-550 during the time shown in the chart. There is, however, no scale for the time between the peaks. This chart relates to the text about increasing sun to the polar ice in the entry above.

|-
| rowspan="1"| 18500 BCE
| [A map of the world. At the top is a light gray area covering {{w|North America}}, {{w|Greenland}} and northern {{w|Europe}} and most of the northern part of {{w|Russia}}. A similar gray area covers {{w|Antarctica}}. The gray areas are labeled as ice.] || 18300 BCE || -4.2 || This [[:Category:Maps|map]] shows where the ice covered the {{w|northern hemisphere}} (and Antarctica) during the {{w|Last Glacial Maximum}}. The continents have not moved much since then, but the lower water level caused by the amount of water bound up in the ice, can clearly be seen in several locations. For instance, the {{w|British islands}}, Greenland, and {{w|Papua New Guinea}} are connected to their respective neighboring continents. Also {{w|Alaska}} and Russia are connected through the ice sheets covering the northern part of the Earth.
|-
| rowspan="1"| 18000 BCE
| …And the ice sheets start to melt. || 17900 BCE || -4.1 || This was a slow process that takes 10,000 years. The ice is mentioned again at 13,600 and 8400 BCE.

|-
| rowspan="1"| 17500 BCE
| Temperatures have been creeping upward, but around this point, CO2 levels start to climb…|| 17300 BCE || -4.1 || Due to the release of gasses from various sources (dissolved in the ocean, trapped in {{w|permafrost}}, etc), {{w|Carbon dioxide in Earth's_atmosphere#Measuring ancient-Earth carbon dioxide concentration|atmospheric CO2 levels}} increased by 100 parts per million over a span of thousands of years. Modern civilization has added the same amount in a single century.

|-
| rowspan="1"| 17000 BCE
| …And then the warming speeds up. || 16700 BCE || -4.1 || It took 3000 years for the temperature to increase with one degree. So this sentence can be seen as sarcasm about the rate of natural climate change compared to modern {{w|anthropogenic}} (human caused) warming.

|-
| rowspan="1"| 16500 BCE
| [Cueball is standing with a spear just the right of the graph talking to a rabbit.] Cueball: Still pretty cold. || 16200 BCE || -4.0 || True, because although the temperature has risen with 0.3°C over the last 4000 years, it's still 4°C below the 1961-1990 average.

|-
| rowspan="2"| 16000 BCE
| [Megan touches the dotted line to the right of her, with Ponytail standing on the other side. The graph has finally passed the -4°C line below the 1961-1990 average.] || 15600 BCE || -3.9 || Megan is the first drawing on the left side of the curve. She seems to be pushing the temperature up.
|-
| [In the right part of the chart is an explanation of the data. Below the first two lines there are four drawings each showing possible temperature swings in reality compared to the smoothed data that represents the dotted curve of the entire chart. The dotted curve is shown in all four drawings and a thin line is shown running along it but with much more fluctuation left and right on the first two, a large spike right on the third and a large bump way right on the fourth. Above these there are two labels. The first labels is inside a bracket that covers the first three, and the last label is for the last drawing. Below is a list of sources.] Limits of this data: Short warming or cooling spikes might be “smoothed out” by these reconstructions but only if they’re small or brief enough. Possible Unlikely Reconstructions are from Shakun (2012) and Marcott (2013), scaled to Annan + Hargreaves (2013) estimate for the last glacial period. || 15600 BCE || -3.9 || This is Randall's pre-emptive response to skepticism about the accuracy of prehistoric data. {{w|Ice cores}} and similar records might miss individual year-to-year variation, but should catch sustained changes lasting many decades, which is the time scale that matters for climate. See links to the [[#Sources|sources below]].

|-
| rowspan="1"| 15500 BCE
| In what is now {{w|France}}, humans paint murals on the walls of the {{w|Lascaux}} caves [Hairy paints three animals, two with horns, and two humans, Cueball holding hand with Hairy who has a spear. On the other side of the central line Megan writes three letters, the last of which is reversed:] NIИ || 15200 BCE || -3.8 || A reference to the industrial techno band {{w|Nine Inch Nails}} as Megan writes the bands stylized name NIИ on the wall next to Hairy who is in the process of painting part of the {{w|cave paintings}} at Lascaux in France.

|-
| rowspan="1"| 15000 BCE
| Ice sheets around {{w|Alaska}} shrink, exposing a land bridge between Asia and North America [From around the bottom if this section and down to 11500 BCE the dotted curve moved steadily to the right towards warmed temperature peaking close to 1.5°C below the 1961-1990 average. Before this the temperature had not moved much away from that at the start.] || 14600 BCE || -3.5 || This land bridge is known as {{w|Beringia}}. It is mentioned again at 8300 when it disappears due to the rising seas.
|-
| rowspan="1"| 14500 BCE
| [Cueball walks right looking back at the graph behind him. Megan walks in front of him pointing further right.] Cueball: Cool. Humans reach {{w|North America}}. || 14200 BCE || -3.3 || This is approximately when the humans from {{w|Asia}} crossed the land bridge mentioned in the previous entry, from what is now {{w|Siberia}} to what is now {{w|Alaska}}. {{w|Settlement of the Americas}} occurred around the time shown in the chart, although {{w|Settlement_of_the_Americas#Chronology|it's possible}} that earlier humans did so by boat prior to the formation of the land bridge. Cueball's comment is a double entendre; it was figuratively "cool" that early people migrated this far, and the climate was literally cool compared to modern times.

|-
| rowspan="2"| 14000 BCE
| The edge of the ice withdraws from {{w|New York City}} and retreats north. || 13700 BCE || -3.1 || Even though the ice began to melt 4000 years before (at 18,000 BCE in the chart) it is first now that New York City is free of ice.
|-
| [A large glacier front speaks in a speech bubble with an arrow pointing at it. Behind is there are four peaks in the horizon and in front of it three small melting pools and some rocks on the ground.] Glacier: ''That’s it! I’m moving to Canada!'' || 13600 BCE || -3.0 || When US citizens are unhappy with changes in their country, they sometimes say they will move to Canada in protest. Here it is the glacier that is anthropomorphically unhappy with the climate changes. However this is a slow process; it crosses the Canadian border more than 5000 years later.

|-
| rowspan="2"| 13500 BCE
| Humans domesticate dogs (Date uncertain, may be much earlier) || 13400 BCE || -3.0 || See {{w|Origin of the domestic dog}}. This timeline event is not quite accurate. The first dogs differentiated from {{w|Gray wolf|wolves}} about {{w|Origin_of_the_domestic_dog#Time_of_domestication|23,500 years ago}}, but there was an event around 13500 BCE that increased the population size and may be attributable to domestication events.
|-
|| [Megan and Cueball is watching a wolf looking at them.] Megan: Okay, you can live in our homes and we’ll feed you, but we’ll still get mad if you poop on the floor. Wolf: Deal. Cueball: And we get to breed you to be tiny and dress you in little costumes. Wolf: …Wait. || 13100 BCE || -2.8 || Megan is making a deal with the wolf that it can eat and sleep with the humans as long as they can yell at it for pooping indoor. This sounds like a sweet deal for the wolf until Cueball mentions that they will {{w|Dog breeding|breed}} it to be {{w|Chihuahua (dog)|very small}} and then dress it up in small {{w|Dog's fashion|costumes}}. The wolf says wait, but it is already too late...

|-
| rowspan="2"| 13000 BCE
| {{w|Woolly Rhino}} goes extinct || 12900 BCE || -2.7 || Mainland woolly rhinos died in the {{w|Quaternary extinction event}}, but a small island population survived until {{w|Woolly_rhinoceros#Extinction|around 8000 BCE}}. Woolly rhinos likely became extinct in part due to {{w|Holocene extinction|over-hunting}}. Randall's choice of species on this chart seems to focus on animals that were greatly affected by humans, for good or ill.
|-
| {{w|Oregon}} is scoured by huge floods as glacial dams burst and lakes of meltwater flow to the sea || 12600 BCE || -2.2 || This is a reference to the {{w|Missoula Floods}} several cataclysmic floods that swept periodically across eastern {{w|Washington}} and down the {{w|Columbia River Gorge}} flooding much of eastern Washington and the {{w|Willamette Valley}} in western Oregon at the end of the last ice age. During the last {{w|deglaciation}} ice dams formed then burst several times between 13,000 and 11,000 BCE.

|-
| rowspan="1"| 12500 BCE
| Ice sheets withdraw from Chicago || 12200 BCE || -1.8 || The next step towards the Canadian border, after they left New York at 13,600 BCE.

|-
| rowspan="1"| 12000 BCE
| Humans settle {{w|Abu Hureyra}} in {{w|Syria}} || 11550 BCE || -1.6 || A well-preserved prehistoric village that existed from 11,000 to 7000 BCE (a little later than noted in the chart), allowing archaeologists to study how their culture developed.

|-
| rowspan="1"| 11500 BCE
| [An arrow on the left side of the dotted curve is pointing down along the dotted curve and to the left indicate temperature is declining again, meaning the dotted curve now moves left to colder temperatures. This only continues until 10500 BCE. It is only the second time something is noted on the left side after Megan at 16000 BCE] Temperatures start to decline, mainly in the Northern hemisphere This may be caused by changes in ocean circulation due to the floods of cold fresh meltwater flowing into the Atlantic as the North American ice sheet melts. This cooler period is called the {{w|Younger Dryas}} || 11300 BCE || -1.6 || In the Younger Dryas, the Earth cooled by almost one degree over 1000 years. There were {{w|Outburst flood#Glacial_floods_in_North_America_.288.2C000_to_15.2C000_years_ago.29|several floods}} during the end of the ice age but the most famous is the one from {{w|Lake Agassiz}}. A similar but less global effect could occur if the ice on {{w|Greenland}} melts too quickly and causes a {{w|shutdown of thermohaline circulation}}. Without the {{w|Gulf Stream}}, hot water would remain in the Gulf of Mexico and the Caribbean instead of warming the {{w|North Atlantic}} and Europe. The movie {{w|The Day After Tomorrow}} dramatized a worse-than-worst-case version of this, happening in days instead of centuries.

|-
| rowspan="1"| 11000 BCE
| [This is the first text to the left of the dotted curve:] Humans reach {{w|Argentina}} || 10900 BCE || -1.8 || The earliest evidence of {{w|Indigenous_peoples_in_Argentina#Prehistory|humans in Argentina}}. Finally the temperature graph has risen enough that there is space to write text on the left side of the curve.

|-
| rowspan="2"| 10500 BCE
| [An arrow pointing down along the right side of the dotted curve and to the right indicate temperature is increasing again, meaning the dotted curve now moves right to hotter temperatures. This continues until 8000 BCE where it levels out just above the 1961-1990 average.] Warming resumes || 10500 BCE || -1.8 || After 1000 years of slightly decreasing temperatures the warm up of Earth resumes. Over the next 3000 years the temperature increases 2.5°C, reaching a long plateau about 0.5°C above the 1961-1990 average around 7500 BCE.
|-
| Human settlements at {{w|Jericho}} ||10050 BCE || -1.4 || The {{w|Jericho#Pre-Pottery_Neolithic.2C_c._9500_BCE|first permanent settlement}} on the site of Jericho occurred around 9500 BCE, but there is evidence of {{w|Jericho#Natufian_hunter-gatherers.2C_c._10.2C000_BCE|non permanent settlement}} during this period, when cold and drought made permanent habitation in that region difficult.

|-
| rowspan="1"| 10000 BCE
| First development of {{w|farming}} || 9750 BCE || -1.1 || This is now called the {{w|Neolithic Revolution}}, i.e. the wide-scale transition of many human cultures from a lifestyle of {{w|Hunter-gatherer|hunting and gathering}} to one of {{w|agriculture}} and settlement. The {{w|history of agriculture}} began independently in several locations with both {{w|domestication}} of animals and the farming of different {{w|cereals}}. One of the first regions to develop farming was the {{w|Fertile Crescent}}. This is also around this time that the last ice age is said to have ended.

|-
| rowspan="2"| 9500 BCE
| {{w|Saber-toothed cat}} goes extinct || 9200 BCE || -0.3 || Although one of these (Smilodon) was known as the {{w|saber-toothed tiger}}, most saber-toothed "cats" are not related to tigers, or any modern {{w|cats}} at all, but can be viewed as examples of convergent evolution. {{w|Smilodon}} became extinct around 8000 BCE, and the last Saber-toothed cat first became extinct around 7000 BCE, which does not fit very well with Randall's range. Indirectly humans may have caused the extinction of the Saber-toothed cat by over-hunting their {{w|megafauna}} prey, depriving the cats of food sources.

|-
| {{w|Horses}} disappear from {{w|North America}} || 9100 BCE || -0.2 || The {{w|evolution of the horse}} began millions of years ago in North America; early species {{w|Evolution_of_the_horse#Miocene_and_Pliocene:_true_equines|migrated across Beringia into Eurasia}} before their predecessors {{w|Evolution_of_the_horse#Pleistocene_extinctions|died out}}.

|-
| rowspan="4"| 9000 BCE
| | Last North American {{w|Pokémon}} go extinct [Cueball with a spear and Megan is looking up at this last “fact”.] Megan: That is not a real fact. || 8900 BCE || -0.1 || Pokemon are not real. This faux-extinction is likely a reference to the {{w|Pokémon Go}} game, which Randall spoofed in [[1705|1705: Pokémon Go]]. Virtual Pokémon now thrive throughout the entire world, and are most commonly found near [http://time.com/4443225/pokemon-go-affluent-white-neighborhoods-report/ affluent first world neighborhoods].

|-
| Temperatures reach modern levels || 8800 BCE || 0.0 || It took 11,200 years for the temperature to increase 4.3°C. It's possible that human-created effects will produce an equal change in a few hundred years.
|-
| Rising seas cut off the {{w|land bridge}} between North America and Asia || 8700 BCE || 0.1 || {{w|Beringia}} was freed of ice in 15,000 BCE. This is an example of what happens when the temperature rises and glaciers melt. Sea levels are rising again as ice on {{w|Greenland}} and {{w|Antarctica}} continues to melt.

|-
| {{w|Cattle}} domesticated || 8500 BCE || 0.2 || Cattle feature prominently in the comic [[1338: Land Mammals]].

|-
| rowspan="2"| 8500 BCE
| Ice sheets retreat across the Canadian border || 8400 BCE || 0.3 || Finally the glacier that began retreating from New York around 13,600 BCE succeeded in moving to Canada as it had threatened to do...
|-
| Temperatures start to level out slightly above 1961-1990 levels || 8050 BCE || 0.4 || The next 3000 years the temperature stays within 0.2°C degree of a temperature 0.5°C above the 1961-1990 average. A very long and stable period.

|-
| rowspan="1"| 8000 BCE
| [The above sentence breaks over the 8000 BCE line. From here a maximum in temperature on the chart is reached at 0.5°C above the 1961-1990 average, which will not be overtaken until 2000 CE. It stays almost constant here until 5000 BCE where a slight cooling begins.] || 8000 BCE || 0.4 || This is the only five hundred year span with no events listed fully inside. Maybe because nothing happens with the temperature.

|-
| rowspan="2"| 7500 BCE
| This warm, stable period is called the {{w|Holocene Climate Optimum}} || 7400 BCE || 0.5 || Some skeptics like to say "[http://www.skepticalscience.com/10000-years-warmer.htm it was warmer in the Holocene]." This is no longer true. Global temperature began encroaching Holocene levels in 1998, and has equaled or possibly exceeded them since 2014.
|-
| {{w|Jiahu}} settled in China || 7050 BCE || 0.5 || Jiahu is another prehistoric settlement, similar to Abu Hureyra (12000 BCE), that was extensively studied by archaeologists.

|-
| rowspan="2"| 7000 BCE
| Final collapse of the North American ice sheet leads to rapid 2-4m sea level rise… || 6800 BCE || 0.55 || The temperature almost reached 0.6°C above the 1961-1990 average before this happened and caused the slight decrease in temperature mentioned below.
|-
| [A small arrow points down and left to the right of the dotted curve. There is a small decrease in temperature but it is very small and would have been missed without the arrow and label.] …And a period of cooling in the Northern hemisphere || 6550 BCE || 0.5 || A 0.05 degree decrease in 200 years again refers to the theme of slow natural climate change.

|-
| rowspan="1"| 6500 BCE
| As seas rise to near their modern levels, Britain is cut off from mainland Europe || 6300 BCE || 0.45 || This is a reference to the flooding of {{w|Doggerland}}.

|-
| rowspan="1"| 6000 BCE
| Humans develop copper metalworking || 5600 BCE || 0.5 || The {{w|copper age}} was relatively brief before humans discovered how to make {{w|bronze}}.

|-
| rowspan="2"| 5500 BCE
| Massive volcanic eruption in {{w|Oregon}} creates crater lake || 5300 BCE || 0.55 || {{w|Crater Lake}} is the caldera at the top of Mount Mazama, a collapsed stratovolcano. If it erupted again, it could become a Somma volcano (see [[1714: Volcano Types]]).
|-
| {{w|Gold}} metalworking || 5050 BCE || 0.6 || The temperature peaks here at just a bit more than 0.6°C above the 1961-1990 average. It will not rise above this level until the global warming sets in in the 1900s.

|-
| rowspan="2"| 5000 BCE
| {{w|Invention of the wheel}} || 4900 BCE || 0.6 || Wheels are one of the most important inventions of humanity. They feature in many xkcd comics, such as [[1075: Warning]].
|-
| [To the right of the dotted curve is an arrow pointing down and slightly left. From here temperature decreases very slowly but steadily from 0.5°C above the 1961-1990 average until 1000 BCE where a stable plateau is reached around the 1961-1990 average.] Earth begins to cool slowly mainly due to regular cycles in its orbit || 4800 BCE || 0.5 || Again a reference to the {{w|Milankovitch cycles}} mentioned in detail at 18,600 BCE. Here they cause a cooling rather than a heating as they did back then.

|-
| rowspan="3"| 4500 BCE
| {{w|Proto-Indo-European language}} develops || 4400 BCE || 0.5 || Most of the languages in Europe, the Middle East, and India share a surprising number of common roots. PIE is the theoretical ancestor from which they descend. Randall mentions this language family in many comics, such as [[890: Etymology]].
|-
| [To the right of the curve Ponytail holds up a hand towards Cueball.] Ponytail: Let’s make our language heavily inflected, so future students have to memorize a zillion verb endings! Cueball: Okay! || 4400 BCE || 0.5 || Ponytail gets the idea to develop the language heavily inflected to make it difficult to remember all the verb endings for future students and Cueball is okay with that. This is a direct reference to the comic [[1709: Inflection]].
|-
| Permanent settlements in the {{w|fertile crescent}} || 4200 BCE || 0.5 || The Fertile Crescent is one of those things you're supposed to remember from grade school. A lot of historic milestones happened there, such as the pyramids of Giza, the code of Hammurabi, and the Abrahamic religions.

|-
| rowspan="2"| 4000 BCE
| Horses domesticated || 3950 BCE || 0.5 || Horse riding was the greatest advance in land travel until the invention of engines. Horses appear in many xkcd comics, such as [[936: Password Strength]].
|-
| {{w|Minoan culture}} arises on Crete || 3700 BCE || 0.5 || Minoan culture invented many strange and wonderful things, such as the Labyrinth at Knossos and {{w|Bull-leaping}}.

|-
| rowspan="4"| 3500 BCE
| {{w|Egyptian mummification}} || 3500 BCE || 0.5 || xkcd has discussed mummification in {{what if|134|What If? 134: Space Burial}}.
|-
| Rise of the {{w|Indus Valley civilization}} || 3300 BCE || 0.5 || The largest bronze-age civilization.
|-
| Invention of {{w|writing}} in {{w|Sumer}} “{{w|prehistory}}” ends, “{{w|history}}” begins || 3200 BCE || 0.5 || Our knowledge of prehistoric events must rely on digging up artifacts and making inferences. After this time, it became possible to find descriptions of past people and events, which is the definition of history. (Old guy in Sumer: Kids these days with their new-fangled stone tablets, instead of using their memory...)
|-
| Earliest human whose name we know (Pharaoh {{w|Iry-Hor}} in Egypt) || 3100 BCE || 0.5 || The first named person we know of today! This was also mentioned as a "cool fact" in the title text of [[1355: Airplane Message]].
|-
| rowspan="5"| 3000 BCE
| {{w|Three Sovereigns and Five Emperors}} period in China || 2800 BCE || 0.4 || The temperature has finally dropped below 0.5°C above the 1961-1990 average after almost 2000 years of cooling from 0.6°C above the 1961-1990 average.
|-
| {{w|Gilgamesh}} || 2700 BCE || 0.4 || Gilgamesh was probably a Sumerian king whose tales were exaggerated into mythology.
|-
| {{w|Imhotep}} || 2600 BCE || 0.4 || Imhotep was not a pharaoh, but a wise commoner who was elevated to chancellor, high priest, and post-mortem divinity.
|-
| {{w|Maya civilization|Mayan}} culture emerges || 2600 BCE || 0.4 || Like the ancient Egyptians, Mayans are remembered for pyramids and {{w|logograph}}s.
|-
| {{w|Great Pyramid}} constructed || 2650 BCE || 0.4 || xkcd has discussed pyramids in [[1717: Pyramid Honey]] and {{what if|95|What If? 95: Pryamid Energy}}.

|-
| rowspan="3"| 2500 BCE
| {{w|Corded Ware culture}} in Europe || 2500 BCE || 0.3 || The term Corded Ware was invented by an archaeologist; no civilization actually called themselves that.
|-
| [To the left of the curve two rock musicians with long hair and electrical guitars are standing on either side of a small gate made of three slabs of stone, one on top of the other two standing stones.] {{w|Stonehenge}} completed || 2200 || 0.3 || This is a reference to the 1984 {{w|mockumentary}} about the fake rock band {{w|This Is Spinal Tap}}. In the movie the band wanted a giant Stonehenge prop 18 feet high, but a writing mistake gives them one that is only 18 inches.
|-
| {{w|Chariots}} developed || 2000 BCE || 0.3 || But {{w|Chariots of Fire}} came much later.

|-
| rowspan="3"| 2000 BCE
| {{w|Alphabetic writing}} developed in Egypt || 1750 BCE || 0.2 || Obligatory reference to xkcd [[1069: Alphabet]].
|-
| Last {{w|mammoth}}s on a tiny Siberian island go extinct || 1650 BCE || 0.2 || Many of the {{w|Pleistocene megafauna}} died in the {{w|Quaternary extinction event}}. Like the {{w|woolly rhino}} (see 12900 BCE) these animals likely became extinct in part due to {{w|Holocene extinction|humans hunting them}}, which may be why Randall included them in the chart. Most of the mammoths died out before 8000 BCE but {{w|Woolly_mammoth#Extinction|some survived in remote areas}} and the last known population died on {{w|Wrangel Island}} in the {{w|Arctic Ocean}} around 2000 BCE, slightly earlier than Randall shows here.
|-
| {{w|Minoan eruption}} || 1600 BCE || 0.2 || This volcano may have led to the downfall of Minoan civilization.

|-
| rowspan="5"| 1500 BCE
| {{w|Iron smelting}} || 1400 BCE || 0.1 || The beginning of the {{w|Iron Age}}.
|-
| {{w|Olmec}} civilization develops in Central America || 1350 BCE || 0.1 || No, Maggie, not Aztec, [http://vimeo.com/34002760 Olmec].
|-
| [A Trojan horse with two Cueball-like guys in front and a third standing on its back. Its back is at three Cueball’s height and its head rises to the level of the Cueball on its back. It stands on a platform with four wheel on the visible side. There is text on the horse] Setting of the ''{{w|Iliad}}'' and the ''{{w|Odyssey}}'' Text on horse: Not a trap || 1250 BCE || 0.1 || A reference to the {{w|Trojan War}} qua the drawing of the {{w|Trojan Horse}}. The horse was a big trap letting the soldiers hidden inside it into {{w|Troy}}. This explains why it has ''Not a trap'' written on it. Else they would not have taken the giant wooden horse present from their sworn enemies into their city just like that... Note that the Trojan horse isn't mentioned in the Iliad, and only recalled in passing by the characters in the Odyssey.
|-
| Invasion of the {{w|Sea peoples}}* * A real thing || 1200 BCE || 0.1 || {{w|Mermaid#One_Thousand_and_One_Nights|Sea people}} might sound like a reference to mythical {{w|mermaid}}s, so Randall feels the need to footnote that this event was ''a real thing'' (as opposed to his Pokémon reference, which he notes is ''not a real fact''). The sea peoples were a seafaring confederation of groups known to have attacked ancient Egypt around this time.
|-
| {{w|Polynesians}} explore the Pacific Ocean || 1000 BCE || 0.1 || {{w|Polynesian navigation}} was surprisingly widespread.

|-
| rowspan="8"| 1000 BCE
| [From 1000 BBC to 1000 CE the temperature is stable and very close to the 1961-1990 average.] || 1000 BCE || 0.1 || The temperature has fallen from the Holocene Optimum by half a degree to just a bit above the the 1961-1990 average. It will stay in this range for the next 2000 years.
|-
| {{w|Solomon}} || 1000 BCE || 0.1 || Solomon may have been a real historical king, but he probably did not threaten to chop a baby in half.
|-
| {{w|Iliad}} and {{w|Odyssey}} composed || 900 BCE || 0.1 || These classic myths were written more than 300 years after their supposed events. Archaeologists believe the city of {{w|Troy}} existed (and was destroyed by war around the right time period), but characters like Helen, Odysseus, and Achilles did not.
|-
| Rise of {{w|Greek city-states}} || 800 BCE || 0.1 || This is ''Sparta'', along with Athens and several others.
|-
| {{w|Neo-Assyrian Empire}} || 800 BCE || 0.1 || Hi, you may remember us from such kings as Adad-nirari and Sennacherib.
|-
| {{w|Ancient Olympic Games|First Olympics}} || 750 BCE || 0.1 || The first of the ancient Olympic Games is traditionally dated to 776 BC.
|-
| {{w|Zapotec civilization|Zapotec}} writing in modern Mexico || 600 BCE || 0.0 || Another Central American culture that fell to the Spanish invasion.
|-
| {{w|Confucius}} || 550 BCE || 0.0 || "He who knows all the answers has not been asked all the questions."

|-
| rowspan="10"| 500 BCE
| The stuff in the {{w|300 (film)|movie ''300''}}, but regular speed and with more clothing || 450 BCE || 0.0 || A reference to the {{w|Battle of Thermopylae}} by comparison with the 2007 movie ''300'' about this battle. The real Spartans wore armor, and real humans don't [http://www.google.com/search?q=300+slow-motion fly through the air in slow motion when struck].
|-
| {{w|Buddha}} || 450 BCE || 0.0 || Randall also mentions other religious figures like {{w|Jesus}} and {{w|Muhammad}}.
|-
| {{w|Nazca Lines}} || 350 BCE || 0.0 || These huge ancient drawings are difficult to see from ground level, leading some people to believe that they were intended for aliens.
|-
| {{w|Alexander the Great}} || 350 BCE || 0.0 || One of the most successful conquerors of the iron age, known for supposedly cutting the {{w|Gordian Knot}}.
|-
| {{w|Mayan hieroglyphics}} || 250 BCE || 0.0 || The {{w|Maya Calendar}} was probably created hundreds of years later.
|-
| {{w|Ashoka the Great}} || 250 BCE || 0.0 || The {{w|Edicts of Ashoka}} proselytized Buddhism across the continent.
|-
| {{w|Paper}} invented || 200 BCE || 0.0 || A significant step up from stone tablets or even papyrus.
|-
| {{w|Asterix}} || 100 BCE || 0.0 || Fictional main character in ''The Adventures of Asterix'', a comic series set around 50 BCE when {{w|Julius Caesar}} conquered {{w|Gaul}}.
|-
| {{w| Teotihuacan|Teotihuacán}} metropolis || 100 BCE || 0.0 || Another ancient city much beloved by archaeologists, even though they don't know who built it.
|-
| {{w|Julius Caesar}} || 50 BCE || 0.0 || Aside from being a conqueror, dictator, and deity, Julius had a big impact on {{w|Julian Calendar|calendars}}. The month of Quintilis was renamed July to honor him, and he was famously assassinated on the ides (middle day) of March.
|-

|-
| rowspan="8"|1 BCE 1 CE
| [Instead of a zero, there are two numbers for each of the two scales before (1 BCE) and after Christ (1 CE)] || 0 CE || -0.1 || Originally the year range went directly from 1 BC to 1 AD. The year zero has since been added for ease of mathematical and astronomical calculations.
|-
| {{w|Roman Empire}} || 1 CE || -0.1 || Julius never held the title "Emperor"; his adoptive son Augustus was the first to do so.
|-
| {{w|Jesus}} || 1 CE || -0.1 || Randall also mentions other religious figures like {{w|Buddha}} and {{w|Muhammad}}.
|-
| [To the left and erupting volcano.] {{w|Pompeii}} || 100 CE || -0.1 || The volcano is {{w|Mount Vesuvius}} which exploded in 79 CE and is famous for burying everyone in the close by city Pompeii preserving peoples bodies inside the huge amount of ash that swallowed the city very rapidly. Today it has given the archeologist lots of knowledge about the culture of that time.
|-
| {{w|Three Kingdoms}} period || 250 CE || -0.1 || Not just a series of movies and video games, but an actual thing that happened in China.
|-
| {{w|Gupta empire}} || 700 CE || -0.1 || Not as great as Ashoka, but still a pretty important time in the history of India.
|-
| Various groups take turns sacking {{w|Rome}} || 550 CE || -0.1 || 500 years is a pretty successful span for an empire.
|-
| {{w|Attila the Hun}} || 550 CE || -0.1 || He probably would not mind being remembered as one of the most infamous barbarians in history.

|-
| rowspan="4"| 500 CE
| {{w|Muhammad}} || 600 CE || 0.0 || Randall also mentions other religious figures like {{w|Buddha}} and {{w|Jesus}}
|-
| {{w|Tang Dynasty}} || 750 CE || 0.0 || A golden age in China, responsible for the development of printing, gunpowder, and many other advances.
|-
| [An arrow to the right of the dotted curve pointing down, takes a swing far out from the curve and then bends back again. The text label next to it breaks into the next 500 period. The dotted curve stays stable at the 1961-1990 average along this arrow.] {{w|Medieval warm period}} in Europe and some northern regions (too regional to affect the global average much) || 900 CE || 0.0 || Changes in ocean currents caused various regions to warm up while others cooled.
|-
| {{w|Leif Eriksson}} || 950 CE || 0.0 || Probably the first European explorer to reach North America.

|-
| rowspan="7"| 1000 CE
| [To the left a drawing of a compass with needle pointing the black end towards north east. There are labels for the four main directions (N, S, W, E) and a label next to it:] {{w|Magnetic compass}} navigation || 1050 CE || 0.0 || It's much easier to sail to the Orient when you can orient yourself.
|-
| [The dotted curve moves to the left towards lower temperature reaching a minimum around 1650 CE of about 0.6°C below the 1961-1990 average at the {{w|Little Ice Age}}.] || 1150 CE || -0.1 || This less than half a degree drop in temperature over 500 years was enough to cause the "Little Ice Age" which resulted in extended ice coverage in the winters in instance Europe. See more below at the entry for the Little Ice Age.
|-
| {{w|Genghis Khan}} || 1200 CE || -0.2 || Mongol emperor. {{w|Gengar}} is not named after him, but [http://bulbapedia.bulbagarden.net/wiki/Kangaskhan_(Pokémon) Kangaskhan] and [http://awoiaf.westeros.org/index.php/Khal the Khals] are.
|-
| {{w|Zheng He}}’s fleet explores Asia and Africa || 1400 CE || -0.3 || He explored farther than European contemporaries like Dias or de Gama.
|-
| {{w|Aztec Empire|Aztec Alliance}} || 1400 CE || -0.3 || Aztec dominance only lasted a century until Cortes arrived, but their cultural legacy is indisputable.
|-
| {{w|Printing press}} || 1450 CE || -0.3 || {{w|Johannes Gutenburg}} ushered in the {{w|Age of Enlightenment}}.
|-
| {{w|Christopher Columbus|Columbus}} || 1490 CE || -0.3 || The time given here references when Christopher Columbus reached the {{w|Americas|New World}} in 1492. The five events around 1500 CE lies very close together but it fits with Columbus fitted in just before 1500.

|-
| rowspan="2"| 1500 CE
| {{w|European Renaissance}} || 1500 CE || -0.3 || From here on, the chart has labels for each 100 year increment instead of 500, but the scale stays the same. Important events happens so much faster in these last five hundred years, there isn't enough space to write all of them, so Randall has had to be selective. He includes {{w|Isaac Newton}} but leaves out {{w|Albert Einstein}}, includes {{w|airplane}}s but leaves out {{w|car}}s, etc.
|-
| {{w|Shakespeare}} || 1600 CE || -0.4 || xkcd references Shakespeare many times, such as [[79: Iambic Pentameter]] and [[1026: Compare and Contrast]].

|-
| rowspan="2"| 1600
| {{w|Isaac Newton|Newton}} || 1650 CE || -0.4 || Isaac Newton appears in various xkcd comics, such as [[626: Newton and Leibniz]].
|-
| [To the right of the dotted curve there is an arrow pointing down that makes a swing in towards the curve and then back out again. This is the coldest it has been since 9500 BCE. It is labeled:] ”{{w|Little Ice Age}}” || 1650 CE || -0.4 || This was not a true geologic Ice Age, just a slightly chilly period when the temperature fell a fraction of a degree, but still colder than it had been through 11,000 years of human civilization. In Europe the winters were so cold that the river {{w|Thames}} {{w|Little_Ice_Age#Europe|froze over}} hard enough to hold {{w|River Thames frost fairs}} between 1607 and 1814. And in 1658 {{w|Sweden}} crossed the {{w|Danish Straits}} on foot to invade {{w|Copenhagen}} in the {{w|March Across the Belts}}. It was only possible due to the harsh winters of the Little Ice Age, demonstrating how much half a degree of climate change can mean.

|-
| rowspan="2"| 1700
| {{w|Steam engines}} || 1750 CE || -0.4 || The {{w|Age of Steam}} heralded the upsurge of human CO2 emissions.
|-
| {{w|United States Declaration of Independence|Unites States Independence}} || 1770 CE || -0.3 || On July 4, 1776.

|-
| rowspan="3"| 1800
| {{w|Industrial Revolution}} || 1825 CE || -0.3 || Not to be confused with {{w|Industrial music}} such as Nine Inch Nails.
|-
| {{w|Electrical telegraph|Telegraphs}} || 1830 CE || -0.3 || [https://youtu.be/gEGQUgWBQL4?t=56s -. --- .-- --..-- / - .... . / -- --- - .... . .-. / --- ..-. / ... .- -- ..- . .-.. / -- --- .-. ... . / .- .-.. .-- .- -.-- ... / ... . -. - / - .... . / .-.. .- -.. / --- ..- - / --- -. / .- / .... --- .-. ... .]
|-
| [After this the dotted curve becomes solid.] || 1850 CE || -0.3 || From 1850 weather records became sufficiently accurate and widespread to greatly improve the precision of climate measurements. Hence the curve stops being an estimate and thus also stops being a dotted curve and becomes solid.

|-
| rowspan="6"| 1900
| {{w|Airplane}}s || 1900 CE || -0.3 || xkcd discusses airplanes many times, such as [[726: Seat Selection]] and {{what if|30|30: Interplanetary Cessna}}.
|-
| {{w|World Wars}} || 1930 CE || -0.2 || Likewise, there are many xkcds on this topic, such as [[261: Regarding Mussolini]] and {{what if|100|100: WWII Films}}.
|-
| [The solid line takes a step to the right close to the 1961-1990 average. Over the rest of the 1900s it moves closer to the 1961-1990 average, crossing it before 2000 where it almost reaches the maximum temperature of 0.5 °C above the 1961-1990 average from earlier in 8000 BCE.] || 1940 CE || -0.2 || This is what the previous 14000 pixels of comic has been leading up to. After a laborious 20 millennia of gradual and meandering climate change, it should be clear that a full degree of warming in a single century is unprecedented in human history, and very unlikely to be natural variation.
|-
| {{w|Fossil fuel}} CO2 emissions start rapidly increasing || 1950 CE || -0.1 || The infamous [http://www.skepticalscience.com/Hockey-stick-or-hockey-league.html "hockey stick"] starts around here.
|-
| {{w|Nuclear weapons}} || 1950 CE || -0.1 || The Working Group on the 'Anthropocene' suggests dating the {{w|Anthropocene}} epoch from ~1950. The week after this comic [[1736: Manhattan Project]] with a mushroom cloud was released.
|-
| {{w|Internet}} || 1980 CE || 0.1 || The origin of the internet dates back to 1960 but it began growing rapidly in 1980. By placing the invention of the {{w|internet}} at 1980 in the chart, just where the temperature curve starts its most rapid increase, Randall uses this [[552: Correlation|correlation]] to humorously imply that the internet caused the rise in temperature. This is also where the temperature crosses the 1961-1990 average, which has to happen somewhere due to the {{w|Intermediate Value Theorem}}.

|-
| rowspan="2"| 2000
| {{w|Northwest Passage}} opens || 2000 CE || 0.4 || This was dramatic evidence that the climate had changed. When global warming removes enough sea ice to create shipping routes that never existed before, then it is clear to people that ''something'' is changing, even if they disregard who/what is responsible for the change.
|-
|[From here to present day the solid line increases rapidly and in 2016, present day, is almost reaches 1°C above the 1961-1990 average, with about 0.8°C above the 1961-1990 average.] || 2016 CE || 0.8 || '''Notice''': [http://www.skepticalscience.com/argument.php?a=11&p=2 Warming did not stop] in 1998.

|-
| rowspan="3"| 2016
| | Present day || 2016 CE || 0.8 || Today, just after the two hottest months ever measured since 1850 had ended (July and August 2016), this comic was released with the message displayed very clearly here below. Act now or fry...
|-
| [From here the curve once again becomes dotted as this is the future. After one dot it splits in two and after the first two dots another split between them occurs forming three possible future dotted curves.] || 2016 CE || 0.8 || Here stops the data and the projection into the future begins so the curve again becomes dotted. Three different scenarios are depicted.
|-
|The first curve bending down before the others, and thus to the right of the other two reaches about 1.2°C above the 1961-1990 average and then goes straight down and stops at the 2100 line. An arrow points to it from the left and a label is written partly before and the rest after the 2100 line to the left of the curve:] Best-case scenario assuming immediate massive action to limit emissions || 2100 CE || 1.2 || If humanity does all in its power to stop global warming we might be able to halt the global warming already before 2050 keeping the maximum temperature to just 1.2°C above the 1961-1990 average. Only 0.4°C above today's temperature. (Note that this is not, in fact, the absolute best-case scenario, as it assumes that no new greenhouse gasses are either added to or removed from the atmosphere in the future; the temperature rise could be kept to an even lower level if some or all of the already-emitted greenhouse gasses were removed from the atmosphere.)

|-
| rowspan="2"| 2100
| [The middle curve bends a little down after reaching 1.3°C above the 1961-1990 average, and then continues this path reaching 2°C above the 1961-1990 average in 2100. An arrow point from below to it and a label is written below the curve and below 2100 line:] Optimistic scenario|| 2100 CE || 2.0 || If all the current realistic preventions are implemented, which might not be so realistic, then we may not even stop the warming but slow it down so we "only" reach 2°C above the 1961-1990 average in 2100 CE but it would not stop there. This is half the temperature change experienced since the ice age, but the other way. This was directly referenced in the title text of [[1379: 4.5 Degrees]]: ''That's only HALF an ice age unit (IAU), which is probably no big deal.''
|-
| [The last line continues along the path from the last 16 years of the solid line reaching 4.2°C above the 1961-1990 average at 2100, almost as far on the other side of the 1961-1990 average in 150 years as it took 14,000 years to move from the other side from the start of the chart. Another arrow point to this from below with a label below the curve and below 2100 line:] Current Path || 2100 CE || 4.2 || In this last scary scenario Randall assumes the temperature keeps rising steadily by extrapolating along the slope of the last two to three years. Randall has warned about the hazards of [[Extrapolating]], but this line is in fact [http://www.skepticalscience.com/climate-best-to-worst-case-scenarios.html below the worst case predictions]. If this comes true we will reach a temperature increase taking us from the 1961-1990 average and in just 125 years to 4.2°C above this average. That is just as far above this average in that short time span as the ice age temperature was below. And it took more than 11,000 years for nature to reach such an increase. Randall already contemplated what this would be like in the +1 ice age unit (IAU) panel of [[1379: 4.5 Degrees]] two years ago, as well as in [[164: Playing Devil's Advocate to Win]] almost 10 years ago. He may get to ''enjoy quite a ride'' as he "wished" for back then.

There is no reason to assume the temperature will not keep rising past 2100 CE, so the {{w|Cretaceous Thermal Maximum|"Hothouse Earth"}} of the early {{w|Cretaceous period}} mentioned in the 4.5 degree comics +2 IAU panel might come to pass in future centuries if we continue on our current path. On the bright side, modern civilization might collapse if this trend keeps up, which would drastically cut our releases of carbon dioxide and other greenhouse gasses into the atmosphere. But then again, positive feedback from methane in melting {{w|permafrost}} might take over... Good luck Earth.
|}

===Sources===
The image attributes climate data sources as "Shakun et al. (2012), Marcott et al. (2013), Annan and Hargreaves (2013), HadCRUT4, IPCC":
* Shakun, Jeremy D.; Clark, Peter U.; He, Feng; Marcott, Shaun A.; Mix, Alan C.; Liu, Zhengyu; Otto-Bliesner, Bette; Schmittner, Andreas; Bard, Edouard (2012-04-04). [https://web.archive.org/web/20160520043848/http://www.atm.damtp.cam.ac.uk/mcintyre/shakun-co2-temp-lag-nat12.pdf "Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation"] (PDF). ''Nature''. '''484''' (7392): 49–54. doi:[https://doi.org/10.1038%2Fnature10915 10.1038/nature10915]. ISSN [https://www.worldcat.org/issn/1476-4687 1476-4687]. Archived from [https://www.nature.com/articles/nature10915 the original] on 2016-05-20.
* Marcott, Shaun A.; Shakun, Jeremy D.; Clark, Peter U.; Mix, Alan C. (2013-03-08). [https://web.archive.org/web/20130412021608/https://content.csbs.utah.edu/~mli/Economics%207004/Marcott_Global%20Temperature%20Reconstructed.pdf "A Reconstruction of Regional and Global Temperature for the Past 11,300 Years"] (PDF). ''Science''. doi:[https://doi.org/10.1126%2Fscience.1228026 10.1126/science.1228026]. Archived from [https://www.science.org/doi/abs/10.1126/science.1228026 the original] on 2013-04-12.
* Annan, J. D.; Hargreaves, J. C. (2013-02-13). [https://web.archive.org/web/20200728042751/https://cp.copernicus.org/articles/9/367/2013/cp-9-367-2013.pdf "A new global reconstruction of temperature changes at the Last Glacial Maximum"] (PDF). ''Climate of the Past''. '''9''' (1): 367–376. doi:[https://doi.org/10.5194%2Fcp-9-367-2013 10.5194/cp-9-367-2013]. ISSN [https://www.worldcat.org/issn/1814-9324 1814-9324]. Archived from [https://cp.copernicus.org/articles/9/367/2013/ the original] on 2020-07-28.
* {{w|HadCRUT|HadCRUT (Hadley Centre/Climatic Research Unit Temperature)}} - [http://www.metoffice.gov.uk/hadobs/hadcrut4/ Official site]
* {{w|Intergovernmental Panel on Climate Change}} - [http://www.ipcc.ch/ Official site]

==Transcript==
'''Note''' there are several spelling errors in the comic, so please do only correct spelling errors that are not part of the comic! See more in the [[#Trivia|trivia section]].
:[A large heading, followed by a sub-caption. Below that two lines with a statement in between:]
:<big>A timeline of Earth’s average temperature</big>
:since the last ice age glaciation
:When people say “The climate has changed before,” these are the kinds of changes they’re talking about.

:[A very long chart below the headings above is headed with a label for the scale of the X-axis above the chart. Below that a sub-caption. To the left an arrow down to the top of the chart pointing to the dotted curves starting point (at -4.3°C below the 1961-1990 average) with a label above the arrow. And arrow pointing left to the left of the center and another pointing right to the right of the center has labels. Below these is the temperature scale of the X-axis, with 9 ticks between the borders each with a label ranging from -4 to +4°C compared to the 1961-1990 average, but with another step in each direction not labeled towards to axis so the chart covers -5 to +5°C compared to the 1961-1990 average.]
:'''Temperature'''
: Compared to the 1961-1990 average
:Start
:Colder
:Warmer
:-4°C -3°C -2°C -1°C 0°C +1°C +2°C +3°C +4°C

:[To the right of the chart is a gray text standing on the side down along the outer boarder of the chart with the sources for the chart:]
: Source: Shakun et. al. (2012) , Marcott et. al. (2013), Annan and Hargreaves (2013) , HadCRUT4, IPCC 

:[The chart is split in 10 columns by the temperature scale and the borders. The two central columns are white, and then from there to the left the background becomes a faded color that changes from light blue to blue at the edge in four steps. Similarly to the right the color changes from light red to red. To the left there is a time scale taking 500 years leaps from 20,000 BCE all the way to year 1, where there are two years, one for BBC and one for CE. The 500 year leaps continue until 1500 CE and from there the steps are down to 100 years until 2100 with also present day 2016 labeled. After 1500 the CE is omitted. The labels stop there, but there is space below covering down to 2200 CE. There is clearly visible division line across the chart on the level of each of the 500 step, and fainter lines for each of the 100 steps all the way even though only the last 5 of these 100 steps are labeled. There is a similar clear line at 2016. Below each step on the Y-axis is noted, and then any text starting before the next step is noted below indented. If there are extra image belonging to text this is indented once more. The graph that the whole chart is about is a dotted line that begins at the “start” point mentioned above at -4.3°C and then begins to go straight down. It will change left and right all the way down. To being with all text and most drawings are to right of the dotted curve. Whenever something is to the left it will be noted. When it says to the left above something, and then nothing over the next, then the next will be to the right. Only at the very bottom are there more entries to the left than right. ]
:20000 BCE
::[An arrow goes from the dotted line to the central line at 0°C. In the middle of the line there is a temperature label:]
::4.3°C
::At the start of our timeline, 22,000 years ago, Earth is 4°C colder than during the late 20th century.
::Boston is buried under almost a mile of ice, and the glaciers reach as far south as New York City.
:::[The Statue of Liberty is shown in front of a glacier front. A very tiny Cueball is on top of the glacier. The drawing is labeled and so is also the glacier.]
:::New York
:::Ice
:::[Cueball (wearing a knit cap with a pom-pom is seen walking in a snowy landscape leaving black footprints behind him. He walks through the white central part of the chart.]
:::[The skyline of Boston is shown with two clear buildings among all the other. Above it is a line and in between this area has been filled with thin lines. The drawing is labeled and so is this area. Also the skyline has an arrow pointing at it with a label:]
:::Boston
:::Ice
:::Modern skyline

:19500 BCE
::But the world is about to warm up.
::By this time, humans have already spread across Africa, Eurasia, and Australia.
::They’ve created painting, pottery, rope, and bows and arrows, but haven’t developed writing or farming.

:19000 BCE
::Changes in the Earth’s orbit mean that more sunlight reaches the polar ice…
:::[A line chart with a labeled Y-axis with three labeled ticks. The curve starts up and then goes down five times and up four times ending down. There is one plateau towards the end compared to the rest of the curve where the ups and downs are quite alike.]
:::Summer sun W/m2 at 60°N
:::550
:::500
:::450

:18500 BCE
::[A map of the world. At the top is a light gray area covering North America, Greenland and northern Europe and most of the northern part of Russia. A similar gray area covers Antarctica. There are two labels in the gray area above and one in the gray area below:]
::Ice Ice
::Ice

:18000 BCE
::…And the ice sheets start to melt.

:17500 BCE
::Temperatures have been creeping upward, but around this point, CO2 levels start to climb…

:17000 BCE
::…And then the warming speeds up.

:16500 BCE
::[Cueball is standing with a spear just the right of the graph talking to a rabbit.]
::Cueball: Still pretty cold.

:16000 BCE
::[Megan points to the graph to the right of her and between her and Ponytail standing on the other side. Mean is the first drawing on the left side of the dotted curve, which has hardly moved since the beginning, only to just on the other side of 4°C.]
::[In the right part of the chart is an explanation of the data. Below the first two lines there are four drawings each showing possible temperature swings in reality compared to the smoothed data that represents the dotted curve of the entire chart. The dotted curve is shown in all four drawings and a thin line is shown running along it but with much more fluctuation left and right on the first two, a large spike right on the third and a large bump way right on the fourth. Above these there are two labels. The first labels is inside a bracket that covers the first three, and the last label is for the last drawing. Below is a list of sources.]
::Limits of this data:
::Short warming or cooling spikes might be “smoothed out” by these reconstructions but only if they’re small or brief enough.
:::Possible Unlikely
::Reconstructions are from Shakun (2012) and Marcott (2013), scaled to Annan + Hargreaves (2013) estimate for the last glacial period.

:15500 BCE
::In what is now France, humans paint murals on the walls of the Lascaux caves
::[Hairy paints three animals, two with horns, and two humans, Cueball holding hand with Hairy who has a spear. On the other side of the central line Megan writes three letters, the last of which is reversed.]
:::NIИ

:15000 BCE
::Ice sheets around Alaska shrink, exposing a land bridge between Asia and North America
::[From around the bottom if this section and down to 11500 BCE the dotted curve moved steadily to the right towards warmed temperature peaking close to -1.5°C. Before this the temperature had not moved much away from that at the start.]

:14500 BCE
::[Cueball walks right looking back at the graph behind him. Megan walks in front of him pointing further right.]
::Cueball: Cool.
::Humans reach North America.

:14000 BCE
::The edge of the ice withdraws from New York City and retreats North.
::[A large glacier front speaks in a speech bubble with an arrow pointing at it. Behind is there are four peaks in the horizon and in front of it three small melting pools and some rocks on the ground.]
::Glacier: ''That’s it! I’m moving to Canada!''

:13500 BCE
::Humans domesticate dogs
::(Date uncertain, may be much earlier)
::[Megan and Cueball is watching a wolf looking at them.]
::Megan: Okay, you can live in our homes and we’ll feed you, but we’ll still get mad f you poop on the floor.
::Wolf: Deal.
::Cueball: And we get to breed you to be tiny and dress you in little costumes.
::Wolf: …Wait.

:13000 BCE
::[Randall did not use the normal spelling for Woolly Rhino, but this is an accepted alternative spelling:]
::Wooly Rhino goes extinct
::Oregon is scoured by huge floods as glacial dams burst and lakes of meltwater flow to the sea

:12500 BCE
::Ice sheets withdraw from Chicago

:12000 BCE
::Humans settle Abu Hureyra in Syria

:11500 BCE
::[An arrow on the left side of the dotted curve is pointing down along the dotted curve and to the left indicate temperature is declining again, meaning the dotted curve now moves left to colder temperatures. This only continues until 10500 BCE. It is only the second time something is noted on the left side after Megan at 16000 BCE]
::Temperatures start to decline, mainly in the Northern hemisphere
::This may be caused by changes in ocean circulation due to the floods of cold fresh meltwater flowing into the Atlantic as the North American ice sheet melts.
::This cooler period is called the Younger Dryas

:11000 BCE
::[This is the first text to the left of the dotted curve:]
::Humans reach Argentina

:10500 BCE
::[An arrow pointing down along the right side of the dotted curve and to the right indicate temperature is increasing again, meaning the dotted curve now moves right to hotter temperatures. This continues until 8000 BCE where it levels out just above 0°C.]
::Warming resumes
::Human settlements at Jericho

:10000 BCE
::First development of farming

:9500 BCE
::Saber-toothed cat goes extinct
::[To the left:]
::Horses disappear from North America

:9000 BCE
::[To the left, Randall spelled Pokémon wrong:]
:::Last North American Pokemon go extinct
:::[Cueball with a speak and Megan is looking up at this last “fact”.]
:::Megan: That is not a real fact.
::Temperatures reach modern levels
::Rising seas cut off the land bridge between North America and Asia
::Cattle domesticated

:8500 BCE
::Ice sheets retreat across the Canadian border
::Temperatures start to level out slightly above 1961-1990 levels

:8000 BCE
::[The above sentence breaks over the 8000 BCE line. From here a maximum in temperature on the chart is reached at 0.5°C which will not be overtaken until 2000 CE. It stays almost constant here until 5000 BCE where a slight cooling begins.]

:7500 BCE
::[To the left:]
::This warm, stable period is called the Holocene Climate Optimum
::[To the left:]
::Jiahu settled in China

:7000 BCE
::Final collapse of the North American ice sheet leads to rapid 2-4m sea level rise…
::[A small arrow points down and left to the right of the dotted curve. There is a small decrease in temperature but it is very small and would have been missed without the arrow and label.]
::…And a period of cooling in the Northern hemisphere

:6500 BCE
::[To the left:]
::As seas rise to near their modern levels, Britain is cut off from mainland Europe

:6000 BCE
::Humans develop copper metalworking

:5500 BCE
::[To the left:]
::Massive volcanic eruption in Oregon creates crater lake
::Gold metalworking

:5000 BCE
::[To the left:]
::Invention of the wheel
::[To the left. To the right of the dotted curve is an arrow pointing down and slightly left. From here temperature decreases very slowly but steadily from 0.5°C until 1000 BCE where a stable plateau is reached around 0°C.]
::Earth begins to cool slowly mainly due to regular cycles in its orbit

:4500 BCE
::[To the left:]
:: Proto-Indo-European language develops
:::[To the right of the curve Ponytail holds up a hand towards Cueball.]
:::Ponytail: Let’s make our language heavily inflected, so future students have to memorize a zillion verb endings!
:::Cueball: Okay!
::[To the left:]
::Permanent settlements in the fertile crescent

:4000 BCE
::Horses domesticated
::[To the left:]
::Minoan culture arises on Crete

:3500 BCE
::Egyptian mummification
::Rise of the Indus Valley civilization
::[To the left:]
::Invention of writing in Sumer “prehistory” ends, “history” begins
::Earliest human whose name we know
::(Pharaoh Iry-Hor in Egypt)

:3000 BCE
::''Three Sovereigns and five emperors'' period in China
::Gilgamesh
::[To the left:]
::Imhotep
::Mayan culture emerges
::[To the left:]
::Great Pyramid constructed

:2500 BCE
::Corded Ware culture in Europe
::[To the left of the curve two rock musicians with long hair and electrical guitars are standing on either side of a small gate made of three slabs of stone, one on top of the other two standing stones.]
::Stonehenge completed
::Chariots developed

:2000 BCE
::[To the left:]
::Alphabetic writing developed in Egypt
::Last mammoths on a tiny Siberian island go extinct
::[To the left:]
::Minoan eruption

:1500 BCE
::[To the left:]
::Iron smelting
::Olmec civilization develops in Central America
::[A Trojan horse with two Cueball-like guys in front and a third standing on its back. Its back is at three Cueball’s height and its head rises to the level of the Cueball on its back. It stands on a platform with four wheel on the visible side. There is text on the horse]
:::Setting of the ''Iliad'' and the ''Odyssey''
:::Text on horse: Not a trap
::[To the left:]
::Invasion of the Sea peoples*
::* A real thing
::Polynesians explore the Pacific Ocean

:1000 BCE
::[From 1000 BBC to 1000 CE the temperature is stable and very close to 0°C.]
::[To the left:]
::Solomon
::Illiad [sic] and Odyssey composed
::[To the left:]
::Rise of Greek city-states
::Neo-Assyrian empire
::[To the left:]
::First Olympics
::Zapotec writing in modern Mexico
::[To the left:]
::Confucius

:500 BCE
::[To the left:]
::The stuff in the 300 (film)|movie ''300'', but regular speed and with more clothing
::Buddha
::Nazca Lines
::[To the left:]
::Alexander the Great
::[To the left:]
::Mayan hieroglyphics
::Ashoka the Great
::[To the left:]
::Paper invented
::[To the left:]
::Asterix
::Teotihuacán metropolis
::[To the left:]
::Julius Caesar

:[At the year 0, there is instead two numbers for each of the two scales before and after Christ:]
:1 BCE
:1 CE
::[To the left:]
::Roman Empire
::Jesus
::[To the left and erupting volcano.]
::Pompeii
::Three Kingdoms period
::[To the left:]
::Gupta empire
::[To the left:]
::Various groups take turns sacking Rome
::Attila the Hun

:500 CE
::Muhammad
::[To the left:]
::Tang Dynasty
::[An arrow to the right of the dotted curve pointing down, takes a swing far out from the curve and then bends back again. The text label next to it breaks into the next 500 period. The dotted curve stays stable at 0°C along this arrow.]
::Medieval warm period in Europe and some northern regions (too regional to affect the global average much)
::[To the left:]
::Leif Eriksson

:1000 CE
::[The dotted curve moves to the left towards lower temperature reaching a minimum around 1650 of about -0.6°C at the Little Ice Age.]
::[To the left a drawing of a compass with needle pointing the black end towards north east. There are labels for the four main directions and a label next to it:]
:::N
:::W E
:::S
:::Magnetic compass navigation
::[To the left:]
::Ghengis [sic] Khan
::Zheng He’s fleet explores Asia and Africa
::[To the left:]
::Aztec Alliance
::[To the left:]
::Printing press
::[To the left:]
::Columbus

:1500 CE
::European Renaissance
::[To the left:]
::Shakespeare

:1600
::[To the left:]
::Newton
::[To the right of the dotted curve there is an arrow pointing down that makes a swing in towards the curve and then back out again. At -0.6°C this is the coldest it has been since 9500 BCE. It is labeled:]
::”Little Ice Age”

:1700
::Steam engines
::[To the left:]
::Unites States Independence

:1800
::Industrial Revolution
::[To the left:]
::Telegraphs
::[After this the dotted curve becomes solid.]

:1900
::[To the left, and on the line for 1900:]
::Airplanes
::[To the left:]
::World Wars
::[The solid line takes a step to the right close to 0°C. Over the rest of the 1900s it moves closer to 0°C crossing it before 2000 where it almost reaches the maximum temperature of 0.5 °C from earlier in 8000 BCE.]
::Fossil fuel CO2 emissions start rapidly increasing
::[To the left:]
::Nuclear weapons
::[To the left:]
::Internet

:2000
::Northwest Passage opens
::[From here to present day the solid line increases rapidly and in 2016 present day is almost reaches 1°C, with about 0.8°C.]

:2016
::[To the left on the line for 2016:]
::Present day
::[From here the curve once again becomes dotted as this is the future. After one dot it splits in two and after the first two dots another split between them occurs forming three possible future dotted curves. The first curve bending down before the others, and thus to the right of the other two reaches about 1.2°C and then goes straight down and stops at the 2100 line. An arrow points to it from the left and a label is written patly before and the rest after the 2100 line to the left of the curve:]
::Best-case scenario assuming immediate massive action to limit emissions

:2100
::[The middle curve bends a little down after reaching 1.3°C and then continues this path reaching 2°C in 2100. An arrow point from below to it and a label is written below the curve and below 2100 line:]
::Optimistic scenario
::[The last line continues along the path from the last 16 years of the solid line reaching 4.2°C at 2100, almost as far on the other side of 0°C in 150 years as it took 14000 years to move from the other side from the start of the chart. Another arrow point to this from below with a label below the curve and below 2100 line:]
::Current Path

==Trivia==
*There have been several ''[[:Category:Large drawings|large drawings]]'' in the history of xkcd, some of which are bigger than this one (for instance [[1110: Click and Drag]]).
**Among those that can be viewed in one go, without downloading a larger file or moving around, this is by far the longest.
**The next longest is probably [[482: Height]].
*The timeline starts at 20,000 BCE (22,000 years ago) and ends at 2100 CE, thus covering 22,100 years.
*There are several spelling mistakes.
**Most obvious is the second time Randall wrote the word "Iliad," because he just spelled it correctly at 1500 BCE and then spelled it ''Illiad'' at 1000 BCE with two Ls.
**Attila the Hun was initially misspelt ''Atilla the Hun'' with ''one'' T and ''two'' Ls, but this was corrected at some point.
**Genghis Khan is misspelt as ''Ghengis Khan'' (a common error).
**Pokémon is spelled ''Pokemon'', but then again, that is not so strange for Randall (see [[1647: Diacritics]]). Despite that, he usually spells it correctly, as in [[1705|1705: Pokémon Go]].
**Note that the fact that woolly rhinoceros becomes ''Wooly rhino'' with only one l is not a spelling mistake but an alternative spelling of the word.
*The following notable facts are absent
**1850: methodical temperature record begins. However, this fact is indirectly indicated when the temperature curve becomes solid around 1850 and until present day.
**The entire swing period between 20 and 200 thousand years prior to now would depict temperature swings with increasing frequency and amplitude (ref geological record). But of course, this could not be included in a comic that only goes back to 20,000 BCE.
**During much of the 300 million years prior to that, the Earth was significantly warmer than now. However, the data's temporal precision decreases with age; seemingly abrupt changes millions of years ago might have happened over centuries or millennia. Hence, the older data is not usable to compare rates of change.

===Popularity of comic===
This comic became popular with a much broader audience than most xkcd comics. It was discussed admiringly by news sites such as [http://www.popsci.com/xkcd-earth-average-temperature-timeline Popular Science], [http://reason.com/blog/2016/09/14/send-around-this-xkcd-climate-change-web Reason], [http://www.slate.com/blogs/bad_astronomy/2016/09/13/xkcd_takes_on_global_warming.html Slate], [http://www.smithsonianmag.com/smart-news/new-comic-masterfully-shows-how-climate-has-changed-through-time-180960451/ Smithsonian], [http://www.forbes.com/sites/ericmack/2016/09/13/heres-22000-years-of-climate-changes-in-a-single-comic/ Forbes], [https://www.vox.com/2016/9/12/12891814/climate-change-xkcd-graphic Vox], [https://www.npr.org/sections/goatsandsoda/2016/09/14/493925781/epic-climate-cartoon-goes-viral-but-it-has-one-key-problem NPR], [https://qz.com/780391/xkcd-tells-the-entire-history-of-humanity-and-climate-change-in-one-cartoon-chart/ Quartz], [https://www.sciencealert.com/why-4-5-million-years-of-fluctuating-global-temperatures-can-t-explain-climate-change-today Science Alert] and [https://www.climatecentral.org/news/climate-change-xkcd-comic-20696 Climate Central]. It was promoted by famous individuals such as [https://twitter.com/elonmusk/status/775632728548970500 Elon Musk] and even [https://twitter.com/unfccc/status/776129715799224320 twitted by the UN council on Climate Change], and obviously hated on by vocal {{rw|climate_change|climate change deniers}} and {{rw|crank|cranks}} such as [https://www.reddit.com/r/dataisbeautiful/comments/53poul/josh_takes_on_xkcds_climate_timeline/ Anthony Watts]{{rw|Anthony_Watts|debunked}} and [http://joannenova.com.au/2016/09/how-to-make-climate-graphs-look-scary-a-reply-to-xkcd/ Joanne Nova]{{rw|Joanne_Nova|debunked}}

Saying the "dotted line comes from computer models" is a bit inaccurate. Prehistoric temperature reconstructions are based on lots of measurements from lots of places around the planet: ice cores, lake and ocean sediments, etc. which are the best proxy records of climate change. From those measurements, one infers temperature, so [[Randall Munroe]] [https://www.scpr.org/news/2016/09/15/64670/epic-climate-cartoon-goes-viral-but-it-has-one-key/#comment-2900724860 may be more correct than he realises]. Calling that process computer modeling stretches the meaning of the phrase. For more {{rw|rationalist}} critique of this chart not driven by the agenda of pushing {{rw|pseudoscientific}} beliefs which are against the worldwide consensus, see [https://www.climatecentral.org/news/climate-change-xkcd-comic-20696 t][https://reason.com/2016/09/14/send-around-this-xkcd-climate-change-web/ h][https://www.npr.org/sections/goatsandsoda/2016/09/14/493925781/epic-climate-cartoon-goes-viral-but-it-has-one-key-problem i][https://www.scpr.org/news/2016/09/15/64670/epic-climate-cartoon-goes-viral-but-it-has-one-key/ s] and most insightfully, [https://scienceblogs.com/gregladen/2016/09/13/everybody-always-gets-this-wrong-even-smart-people this].

*Due to increased interest, Randall decided to push the release of the next comic [[1733: Solar Spectrum]] one day back for a rare [[:Category:Thursday comics|Thursday release]] instead of the scheduled [[:Category:Wednesday comics|Wednesday release]].
**He [http://web.archive.org/web/20160915101125/http://xkcd.com/ noted this] above [[:image:1732_Earth_Temperature_Timeline_header_text_changed_for_all_comics.png|all the comics]] in the [[:image:1732_Earth_Temperature_Timeline_header_text_changed.png|header text on xkcd]]:
::''Note: Since a lot of new people are here looking for this chart today,''
::''I'll be posting Wednesday's comic on Thursday instead.''
:*Before that, the [http://web.archive.org/web/20160912181546/https://xkcd.com/ normal heading] with the release day of xkcd was shown.
:*This was (of course) still there Tuesday the [http://web.archive.org/web/20160913231501/http://xkcd.com/ day after] the release, because it was first on Wednesday there were reason to note the delay.
:*It stayed in place even [[:image:1732_Earth_Temperature_Timeline_header_text_changed_also_when_next_comic_was_released.png|for some time after]] the "Wednesday" comic was released on Thursday, but was [http://web.archive.org/web/20160915154605/http://xkcd.com/ then removed] before [[:image:1732_Earth_Temperature_Timeline_header_text_back_to_normal_shortly_after_next_comic_was_released.png|noon (EST)]] on Thursday.
:**Randall did thus not post a link to this comic in the header text for new visitors to use, only giving them that one extra day.
:*Even though the next comic was released on a Thursday, the scheduled Friday comic [[1734: Reductionism]] was still released as planned.
:**This was also the first time this occurred on xkcd - see [[1734:_Reductionism#Trivia|this trivia item]] from the Friday comic.
*On 2019-03-01, this comic became one of the six [[Design of xkcd.com|footer]] comics.
==== Removal of warning and footnote ====
*This comic's popularity was possibly the reason that both the more-than-10-year-old [[xkcd warning]] as well as the [[footnote#Original_footnote|original footnote]] was [[footnote#Removal_of_original_footnote|removed]] on the day of this comic's release.
**The next footnote was added 22 days later.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Large drawings]]
[[Category:Charts]]
[[Category:Timelines]]
[[Category:Line graphs]]
[[Category:Maps]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Hairy]]
[[Category:Comics featuring real people]] 
[[Category:Multiple Cueballs]]
[[Category:Climate change]]
[[Category:Science]]
[[Category:Animals]]
[[Category:Music]] 
[[Category:Fiction]] 
[[Category:Sport]] 
[[Category:Religion]] 
[[Category:Internet]]
[[Category:Pokémon]]
[[Category:Footer comics]]
[[Category:Puns]] 
[[Category:Volcanoes]]
[[Category:Nuclear weapons]]

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1659: Tire Swing

2022-05-26T17:40:23Z

BetaOS: Undo revision 279430 by Donald Trump (talk)

{{comic
| number = 1659
| date = March 23, 2016
| title = Tire Swing
| image = tire_swing.png
| titletext = If we find one of those tire dumps, the next time he tries to get his truck back we can just retreat and let him have it.
}}

==Explanation==
In this comic, [[Science Girl]] and another girl have just completed a {{w|tire swing}}, a common makeshift {{w|swing (seat)|swing}} is created by hanging a car {{w|tire}} from a length of rope, typically tied to the branch of a tree as in the comic. The other girl might at first look like she has hair like [[Megan]] but not quite as she is revealed upon zoom in to have curly hair. That they are rather small kids can be seen from the size of the tire compared to them. (They could be the same as the girls in the last panel of [[1580: Travel Ghost]]).

In the second panel of this comic Science Girl muses that there are huge tire dumps filled with nothing but old tires that have no use. In the last panel, Science Girl continues that maybe they should use a tire from such a dump next time they make a tire swing. The presumption is that perhaps they used a brand new tire, or a tire from some other source. This is confirmed by the other girl's response (and also by the title text, see below) which makes it clear that the tire they used was in fact stolen from a guy's vehicle. The last reply from Science Girl suggests the victim put up a fight and they had to take the tire by force. So these two small girls actually fought an adult man over his truck and won the fight.

Vehicle tires have a limited lifespan. The natural end of their life is when the pattern of raised treads on the circumference of the tire, which promote traction on wet roads, are worn down to a point where they are no longer effective enough, or after 6-10 years (sunlight causes the rubber to degrade, so the tire becomes prone to cracking and unsafe, even if it appears to be in good condition). Tires can also become damaged in other ways, such as puncture.

{{w|Tire recycling|Used tires}} are a notable ecological problem for a number of reasons (e.g. their size, the quantity produced, their relatively short lifespan, and the fact that they are difficult and slow to break down and contain a number of components that are ecologically problematic). A tire swing represents a functional use for otherwise useless old tires. The amount of tires (it is estimated that 259 million tires are discarded annually) makes them attractive targets for recycling. More than half of used tires are ultimately simply burned for their fuel value (which prevents them from sitting in landfills indefinitely, but this may even be worse as it releases otherwise locked up carbon thus releasing this into the atmosphere and making {{w|global warming}} even worse). Some steel mills that use electric arc furnaces will mix shredded tires with their scrap when charging the furnace for both the carbon value and fuel value, in place of the coal that would otherwise be used.

The comic is thus clearly [[Randall|Randall's]] attempt to draw attention to this huge ecological problem, as he so often before has done with other climate change/global warming related comics. (Climate change, especially global warming, is a [[:Category:Climate change|recurring theme]] in xkcd). So while this is not the joke of the comic, it could be the point of it.

He also suggests another way to use old tires. It should be noted that used tires are not necessarily safe to use as a kids' toy as they could become sharp/frayed along the edges and stones and other hard/sharp objects may have become stuck in the tires (even going all the way through), during its life span, or worn thin enough to tear apart mid-swing (when the stresses on the swing material would be at their peak). So tires bought for use as a swing may even be made from a new tire, but not necessarily of the same solid type as those used for cars. Used tires reused for a swing should be inspected for the problems mentioned above.

The title text goes further, suggesting that they actually stole the victim's entire truck - possibly just to harvest the tire needed for the swing - and that he unsuccessfully attempted to recover the truck, so they probably did fight him. He put up enough of a fight that they do not wish to fight him again (so he at least survived). Further, since the girls expect him to try again (maybe recovering the truck with only three tires), they apparently still have the truck. One of the girls suggests that if they could find one of these tire dumps, then they could take a tire from there, make a new swing, and then just walk or run away from the truck when the guy comes back, letting him have it if he really wants it so bad.

The reason Science Girl made this swing could be that she wishes to become a {{w|cosmologist}} as a reference back her meeting a cosmologist on a tire swing in [[1352: Cosmologist on a Tire Swing]].

Note that {{w|Calvin and Hobbes}}, which has often been [[:Category:Calvin and Hobbes|referenced in xkcd]], has done the same to Calvin's father as the girls did to the guy (though without the violence) in a [http://assets.amuniversal.com/bcb737d0b98e013340c2005056a9545d similar comic].

This was the first of two Wednesdays in a row where Randall used two children to make a reference to an environmental issue, the second being [[1662: Jack and Jill]] about {{w|hydraulic fracturing|fracking}} also with Science Girl.

==Transcript==
:[Science Girl and a girl with long curly hair, are standing under a large leafless tree as Science Girl adjusts a tire swing hanging from the largest of the branches of the tree. The tire hangs so high that the small girls only reach up to just above the center of the tire which has a diameter of more than half the height of the girls.]
:Science Girl: OK, looks good.

:[Zoom in on the girls so only the tire swing can be seen, and nothing of the tree. They both look at the tire.]
:Science Girl: I read that there are these huge dumps everywhere full of millions of old tires that no one knows what to do with.

:[Same setting but Science Girl looks up at the tree (outside the frame).]
:Science Girl: We should use one of those next time.
:Curly haired girl: Yeah. That guy was real mad.
:Science Girl: I would ''not'' want to fight him again.

{{comic discussion}}



[[Category:Comics featuring Science Girl]]
[[Category:Climate change]]

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2022-05-26T17:36:35Z

BetaOS: Undo revision 279356 by Donald Trump (talk)

[{{fullurl:{{{page|{{FULLPAGENAME}}}}}|action=purge}} {{{1|Purge}}}]

1373: Screenshot

2022-05-26T17:30:57Z

BetaOS: Undo revision 279145 by Donald Trump (talk)

{{comic
| number = 1373
| date = May 26, 2014
| title = Screenshot
| image = screenshot.png
| titletext = I'M PLUGGING IN MY PHONE BUT THE BATTERY ON THE SCREEN ISN'T CHARGING
}}

==Explanation==
[[Randall]] is viewing a {{w|screenshot}} of a text-message exchange via his own phone's web browser. Such screenshots are frequently posted online, to show content ranging from [http://www.damnyouautocorrect.com/ humorous typos] to [http://www.reddit.com/r/creepyPMs creepy behavior]. In this screenshot, in addition to the text messages' content, we see a battery bar reflecting a charge of 6%; this effectively "{{w|photobombing|photobombs}}" (or distracts Randall from) the actual content of the original screenshot. On the other hand, the phone on which the shot is viewed is charged at a healthy 85%.

The phone the screenshot is taken from is an iPhone, while the phone being viewed is an Android. Another iPhone screenshot was the joke in [[1815: Flag]].

The title text suggests that Randall has plugged in his phone to quell the anxiety induced by the 6% charge in the screenshot, mistaking it for the actual battery indicator of his own phone. This measure is obviously unsuccessful, as charging his own phone does nothing to change the charge of the phone in the picture. A similar phenomenon is when a screenshot is viewed and the viewer attempts to use the controls (e.g. buttons) in the image.

Randall's fear of losing power to his phone was later explored in [[1802: Phone]] and [[1872: Backup Batteries]], where he brings extra batteries and it is also part of the joke in comic [[1965: Background Apps]].

An alternative interpretation for the title text is that the screenshot was posted as part of a thread asking why their phone isn't charging. This would be ironic, as Randall's focusing on the battery level means his eyes are being drawn to the very problem being spoken about, yet he is too distracted by it to read that this is the problem!

This may also be a reference to {{W|mirror neurons}}. Mirror neurons are according to many neurobiologists a biological basis of empathy. If you see someone stick a needle in their hand, it feels as if you hurt yourself and some people experience a tightness of the chest when hearing a wheezing asthma patient on the radio. Here, Randall's mirror neurons start to fire as he feels the anxiety associated with a phone losing battery power.

Screenshot quality was discussed later in [[1863: Screenshots]]. This comic is one of a small set of comics with the same or almost the same title as another comic (only plural form of word screenshot being difference).

==Transcript==
:[Caption above the panel:]
:When someone posts a screenshot of their phone,

:[The panel shows the screen of an Android phone. At the top there is a black Android status bar with icons like WiFi, battery charge and the time, all in white:]
:85% 10:02 PM

:[Below the status bar is the open program, which is an internet browser, which shows the address field with an unreadable address and the tap icon to the right and the three dots for options. Below that is the page viewed in the browser. It seems to be a post from a person. Below the address bar is a picture of a user with dark hair in a square frame. To the right are two lines of unreadable user information. The post contains a picture posted by the user, and it is a screenshot of a chat/SMS conversation from another phone. The screen is light blue and the conversations has three blue speech bubbles to the left and two replies in between those in green to the right. All posts are unreadable, as are all other words in the picture. At the bottom of the picture the top of another users post, i.e. half the users image, can be seen. At the top of the picture, the status bar from this iPhone screen shot can be seen with icons both left, center and right. To the right the charge icon battery shows a very low charge, indicated with a small red line at the bottom of the battery. Around this low charged battery icon there is drawn a large red circle like spiral, circling the battery symbol two or three times, and four exclamation marks are written above this. The only thing that can be read in the picture is the charge percentage:]
:''!!!!''
:6%

:[Caption below the panel:]
:I can't pay attention to the content if their battery is low.

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Smartphones]]
[[Category:Comics sharing name|Screenshot01]]

642: Creepy

2022-05-26T17:30:40Z

BetaOS: Undo revision 279128 by Donald Trump (talk)

{{comic
| number = 642
| date = September 28, 2009
| title = Creepy
| image = creepy.png
| titletext = And I even got out my adorable new netbook!
}}

==Explanation==
This comic displays [[Cueball]]'s fears that his attempts to strike up a conversation with [[Megan]] will only result in her rejecting him and even humiliating him in front of others for attempting to get to know her - he might even risk getting his picture on {{w|Facebook}} with a warning that he is a creep to be avoided. This is because he worries that others might interpret his behavior as {{w|sexual harassment}}, the exaggerated flip-side of his attempted courtship. It turns out in the fifth and last panel that the first four panels was just one large thought bubble on how Cueball fantasized an attempt to contact Megan would turn out.

Ironically, however, Megan is actually attracted to Cueball and is dismayed that he has not spoken to her. Therefore, Cueball's fears are unfounded and are even preventing the two from meeting and possibly forming a relationship. Megan could of course also have spoken to Cueball herself, but she expects him to make a move if he is interested. Thus she also prevents herself from making contact because of her own expectations and fears of rejection.

The title text is the continuation of Megan's apparent journal entry and further emphasizes the irony of the situation: in the attempt to be alluring to Cueball, Megan took out her "adorable new {{w|netbook}}," the very thing Cueball stopped himself from complimenting in the first place.

This comic comments on the unsettling effects of social change, particularly with respect to the advent of {{w|social media}} and to modern sensitivity toward a woman's (or any person's) right to be left alone in public. It points out that attempting to start a conversation with a stranger has become risky, and we have yet to evolve new customs and conventions [http://store.xkcd.com/products/just-shy to signal openness] to such an approach. The risk is aggravated by social media, by which means an innocent misjudgment may subject one to public humiliation - or even worse someone might expect that you had intention of performing some {{w|Sex and the law|sexual crime}} - if that type of info is published with a picture and/or your name on Facebook or {{w|Twitter}} etc. your life could be ruined without any reason. As a result, opportunities to meet other people are missed, loneliness and social isolation are increased, and one may even experience existential fears of being unattractive. Ironically, some people react to this problem by relying on the same social media to stay connected with others.

==Transcript==
:[Cueball and Megan are sitting on chairs, presumably on a train.]
:Cueball: Hey, cute netbook.
:Megan: ''What.''

:[Zoomed in on Cueball and Megan.]
:Cueball: Your laptop. I just—
:Megan: No, why are you talking to me.

:[Zoomed in on Megan.]
:Megan: Who do you think you are? If I were even slightly interested, I'd have shown it.

:[Both Cueball and Megan, with Megan pointing at Cueball.]
:Megan: Hey everyone, this dude's hitting on me.
:Voice #1: Haha
:Voice #2: Creepy
:Voice #3: Let's get his picture for Facebook to warn others.

:[The previous panel fades into a thought bubble of Cueball.]
:[Cueball and are sitting on chairs, on the train, and Megan is typing on her laptop.]
:Dear blog,
:Cute boy on train still ignoring me.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Romance]]
[[Category:Social interactions]]

2432: Manage Your Preferences

2022-05-26T17:29:36Z

BetaOS: Undo revision 279116 by Donald Trump (talk)

{{comic
| number = 2432
| date = March 3, 2021
| title = Manage Your Preferences
| image = manage_your_preferences.png
| titletext = Manage cookies related to essential site functions, such as keeping Atrus and his sons imprisoned within the page.
}}

==Explanation==
This comic illustrates the complex dialogues often employed by webpage or software designers to hide settings from the user. Many pages provide controls to set privacy-related preferences but make those settings opaque in an attempt to dissuade users from using them. The idea is that a user will become impatient by the confusing options and select the defaults, which provide the site or software with more access or information. This situation is compared to ''{{w|Myst}}'', a 1990s puzzle video game.

Companies which collect or process personal information are required by privacy legislation to give their users the option to withhold personal information, although regulations vary depending on the region-specific laws. The operators of such services usually want to collect as much personal data as they can in order to target advertisements or sell their information to someone else, and wish to incentivize their users not to activate those features. One tactic that is frequently used to accomplish this goal is to provide the user an option which enables all the data collection, but to make the process of disabling the collection time-consuming or difficult. This type of action is generally illegal under the same privacy legislation, but regulation of it has been lax so many companies still try it.

"Atrus" in the title text is the main non-player character in the ''Myst'' series. In the first game these people were imprisoned within books. Pages needed to be collected to complete the books, and it was incredibly hard to find a single page, involving extensive laborious navigation and exploration, and the finding and solving of hidden puzzles. In the ''Myst'' mythos, the books open portals to other worlds, a little like web hyperlinks. Some sites' privacy settings are similarly labyrinthine. For example, some sites will run scripts from a variety of providers but will only allow users to disable them one site at a time without an explanation of what each one does.

The black background possibly shows how many sites are providing tools to switch between light and dark backgrounds now. For a long time white backgrounds were the usual default style, and only people who understood esoteric browser configurations could redisplay many things with a black background - possibly to help with perceived eyestrain ''or'' power usage in certain displays. More recently, it is a fashionable setting for content providers to compose as a selectable option. It is out-of-place for Randall to show a black background, as many of his comics take place in technical computer systems that often have a black background anyway, as most computer terminals still do.

Some browsers and websites do have actual games embedded within their various configuration interfaces. {{w|Google Chrome|Chrome}}, for example, has the famous {{w|Dinosaur Game|dinosaur game}}.

==Transcript==
:[Cueball is sitting in an office chair at a desk in front of his laptop computer. A black zigzag line points to the screen, and above this is shown what is displayed on Cueball's screen. This is shown as a black rectangle, with a white box, with black frame, overlaid over the top of the black section, extending half way above it. The text in this white box is in gray font. Inside the black rectangle are two gray rectangles, with white borders and black text. A small rectangle at the top has "Manage your Preferences" inside it, and a large rectangle below has 6 lines of text.]
:Agree to whatever
:Transport me to an immersive Myst-like game where I click confusingly-labeled toggle switches, only some of which work, perhaps never to find my way back to the page I wanted.

==Trivia==
The title-text originally said "Atrius" instead of "Atrus". A few hours after the comic's release, this was changed.
{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Video games]]
[[Category:Internet]]

1801: Decision Paralysis

2022-05-26T17:29:23Z

BetaOS: Undo revision 279096 by Donald Trump (talk)

{{comic
| number = 1801
| date = February 20, 2017
| title = Decision Paralysis
| image = decision_paralysis.png
| titletext = Good point--making no decision is itself a decision. So that's a THIRD option I have to research!
}}

==Explanation==
This comic illustrates a common problem in the internet era where, with the wealth of knowledge available to us at all times, one puts undue weight on otherwise arbitrary decisions.

This is taken to a comedic extreme by showing how [[Cueball]] is unable to make a critical, time-sensitive choice without putting hours of research in to justify it. Any benefit to researching the imminent decision of "which car will get us to our destination fastest" will be more than offset by the time it takes to make that decision.{{Citation needed}} The inability to make a snap judgment in this case will prove very destructive as the bomb mentioned by [[Megan]] will now likely detonate before they get to the base. The difference in time/effort needed to steal either car is likely presumed to be insignificant to this scenario.

In the caption below the comic [[Randall]] gives the reader one of his [[:Category:Protip|recurring protips]]. In the tip, he reveals a weakness for his potential opponents to exploit. Randall admits to having the same problems with decision-making as Cueball, and suggests that if he were placed in an equally urgent situation testing his (in)ability to choose, he would fail just as spectacularly, as long as he had free access to the internet. As the old saying goes, "give 'em enough rope, and they'll hang themselves"; in this case, give Randall enough internet access, and he'll get caught in an indefinite research loop.

The title text continues this absurdity by bringing a third option to the table, the choice of inaction (which by wasting his time on calculations and research, Cueball has taken), a choice here that seems unacceptable, but the time spent mentioning (and researching it) simply adds to that already spent researching the two cars. Of course this option ensures that they are not killed when the bomb explodes, because they will not be anywhere close to the base. That might make it the only reasonable choice left after wasting so much time pondering which car to steal.

That not making a choice is also a choice has often been mentioned in literature and other places, like when the band {{w|Rush (band)|Rush}} in their song {{w|Freewill (song)|Freewill}} sings "If you choose not to decide - You still have made a choice".

Supposing both of them know how to drive (and steal) a car and defuse the bomb, the best option in this situation is to leave the phone in the pocket and steal both cars, and see who gets there first to defuse the bomb. This would both ensure one of them reaches the base as quick as possible and at the same time resolve the problem of which car would be best for the problem. Of course that would also have defused the joke, [[No Pun Intended]]...

==Transcript==
:[Megan and Cueball are standing near two sport cars. Megan points excitedly at the cars while Cueball looks at his smartphone.]
:Megan: There! If we steal one of those cars, we can get to the base and defuse the bomb!
:Cueball: Hmm, the one on the left accelerates faster but has a lower top speed.
:Cueball: Ooh, the right one has good traction control. Are the roads wet?

:[Caption below the frame:]
:Protip: If you ever need to defeat me, just give me two very similar options and unlimited internet access.

==Trivia==
*The problem of choosing between cars with different accelerations and top speeds is the center of the car customization mechanic introduced in the seventh installment of the {{w|Mario Kart}} series.
*It is known that Randall has played some version of the game, as it has become a [[:Category:Mario Kart|recurring theme]].
*Although presented as a joke, this is a very real problem in electronics design. ''{{w|Buridan’s principle}}'' by none other than {{w|Leslie Lamport}} [http://research.microsoft.com/users/lamport/pubs/buridan.pdf states]:
::"A discrete decision based upon an input having a continuous range of values cannot be made within a bounded length of time."
*This is not the first time that Randall has made a comic that tells his readers how to trick him (or his friends) like in [[1121: Identity]], where he notes how to get his password from a friend.
*In [[1445: Efficiency]] Randall describes why he is so inefficient (again, demonstrating the option 3 beautifully,) and in [[309: Shopping Teams]] two nerds out shopping have to choose between two similar objects and end up in a similar situation, though without a deadly deadline.
*This was the first of two comics in a row where having access to the internet on a smartphone while out walking is a major part of the plot, the next being [[1802: Phone]], where Randall find that it is a problem that it is impossible to take a walk without being updated on his phones feed all the time.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Protip]]
[[Category:Smartphones]]

1582: Picture a Grassy Field

2022-05-26T17:29:12Z

BetaOS: Undo revision 279104 by Donald Trump (talk)

{{comic
| number = 1582
| date = September 25, 2015
| title = Picture a Grassy Field
| image = picture_a_grassy_field.png
| titletext = Wait, I can fix this. Picture another field. In the middle sits the only creature the first creature is afraid of. Now just-- wait, where did THAT one go?
}}

==Explanation==
In this comic [[Megan]] asks [[Cueball]] to picture himself in a grassy field. It is a standard technique to begin a visualization by asking the person to imagine that they are in some calm environment (could be for any kind of {{w|meditation}}/{{w|mindfulness}} like for instance {{w|yoga}}). A [https://www.google.com/search?q=imagine+grassy+field&ie=utf-8&oe=utf-8 grassy field] could have been replaced by a [https://www.google.com/search?q=imagine+you+are+on+a+beach&ie=utf-8&oe=utf-8 beach] at the sea, or a [https://www.google.com/search?q=imagine+you+are+in+a+forest&ie=utf-8&oe=utf-8 forest] with sunbeams coming down through the trees.

Proceeding with the visualization Megan asks Cueball to imagine a creature with the power to be able to escape from any visualized scene, and then tries to convince him that this creature has indeed escaped from his current visualization as it indeed would be able to do. She then proceeds by apologizing for this, but then tells him (warns him) that it from now on might appear in Cueball's daydreams, so he should begin looking out for it. This indicates that she is not at all sorry, but did this intentionally to try and mess with Cueball's head. The idea of the possibility of escaping an imagined situation was already used in [[248: Hypotheticals]]. Now that Megan has introduced both the idea of the creature and the idea that it may appear in his daydreams, Cueball will almost certainly think of it from time to time, creating a self-fulfilling prophecy.

In the title text Megan proposes a solution to get rid of the creature in Cueball's daydream, namely by picturing the only creature that the first fears. However, if this new (maybe quite scary) creature should be able to pursue the original creature, then it would also have to be able to move through visualized scenes just as easily. And this is what Megan pretends happens again. So now the problem is that Cueball has two creatures on the loose in his daydreams. And even if the second scares the first away, he would then still have the new one to worry about.

==Transcript==
:[Megan and Cueball are walking together.]

:Megan: Picture a grassy field.
:Megan: In the center sits a small, pale, big-eyed creature with the power to escape from any visualized scene and move freely through the brain that imagined it.
:Megan: It glances around nervously and-
:Megan: -whoops, where'd it go?
:Megan: Sorry about that! Keep an eye out for it in your daydreams.

{{comic discussion}}
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Cueball]]
[[Category:Psychology]]

1740: Rosetta

2022-05-26T17:28:56Z

BetaOS: Undo revision 279095 by Donald Trump (talk)

{{comic
| number = 1740
| date = September 30, 2016
| title = Rosetta
| image = rosetta.png
| titletext = I WONDERED why he kept asking whether we thought the impact speed was too low.
}}

==Explanation==
On the day this comic was posted (September 30th 2016), the ''{{w|Rosetta (spacecraft)|Rosetta}}'' mission ended with the final descent of ''Rosetta'' onto the comet {{w|67P}}. Landing Rosetta on the comet gave the scientists ([[Ponytail]], [[Megan]] and [[Hairy]]) a chance to collect extra data from very close to the comet, using the spacecraft's powerful sensors.

[[Cueball]] however [[1339: When You Assume|assumed]] that the landing was a "{{w|Asteroid_impact_avoidance#Kinetic_impact|kinetic impact}}" mission to deflect a comet that was on a collision course with Earth. A similar scenario (but using a nuclear weapon implanted inside of the asteroid to deflect it) was depicted in the 1998 film ''{{w|Armageddon (1998 film)|Armageddon}}'', of which Cueball is apparently a fan. ''Armageddon'' is a high-throttle action movie, [http://www.todayifoundout.com/index.php/2010/01/nasa-uses-the-movie-armageddon-in-their-management-training-program/ infamous among NASA employees] for its incredibly liberal application of artistic license. [https://www.imdb.com/title/tt0120591/goofs#factual_error IMDb has a list of factual inaccuracies].

In reality, at the time ''Rosetta'' landed, 67P was already leaving the inner solar system and was [http://sci.esa.int/where_is_rosetta/ a long way past Earth]. It will return to the inner solar system in around 5 years' time, but its orbit will not pass close to the Earth in any foreseeable time.

Also, as the title text hints, Rosetta's speed was only [https://astronomynow.com/2016/09/30/rosettas-final-hours/ 90 cm per second] relative to the surface at the moment of impact (or about 2 mph/3.25 km/h; the speed of a slow walk), while the comet was traveling at 14.39 km/s. Given that Rosetta only weighs a couple of tons (or [[1461: Payloads|six horses]]), and 67P weighs nearly 10 billion tons (or 22 billion horses), Rosetta's landing will have no actual measurable effect on the comet's momentum.

''Rosetta'' (and its lander, ''Philae'') were previously the subject of the comics [[1402: Harpoons]] and [[1446: Landing]], and were mentioned in [[1461: Payloads]], [[1547: Solar System Questions]] and possibly [[1621: Fixion]].

==Transcript==
:[A control room with Megan and Hairy sitting on stools in front of an opposite desk with computers. Hairy has his arms in the air. Ponytail is standing between them with Cueball, she is watching Megan and he is looking at Hairy.]
:Megan: Signal lost.
:Megan: ''Rosetta'' has impacted the comet.
:Ponytail: Good work everyone.
:Hairy: ''Woooo!''

:[Zoom on Ponytail, still looking at Megan and Cueball who has turned towards Ponytail.]
:Cueball: So.
:Cueball: Do you think we deflected it?

:[Ponytail turns to Cueball as does Hairy who turns and looks away from his computer.]
:Ponytail: Huh?
:Cueball: Did we hit the comet hard enough to deflect it away from Earth?

:[In a frame-less panel Ponytail talks with Cueball.]
:Ponytail: That... Is that what you thought we were doing?
:Cueball: I just assumed...

:[Megan enters whispering in Ponytail's ear, holding a hand up to her mouth. Ponytail still looks at Cueball who raises his arms up in the air.]
:Megan: He's a huge ''Armageddon'' fan. Let him have this.
:Ponytail: Okay, fine.
:Ponytail: Yes! We did it! The Earth is saved!
:Cueball: ''Wooo!''

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Hairy]]
[[Category:Comics featuring Megan]]
[[Category:Fiction]]
[[Category:Space probes]]

1740: Rosetta

2022-05-26T17:28:29Z

BetaOS: Undo revision 279082 by Donald Trump (talk)

191: Lojban

2022-05-26T17:28:01Z

BetaOS: Undo revision 279083 by Donald Trump (talk)

{{comic
| number = 191
| date = December 1, 2006
| title = Lojban
| image = lojban.png
| titletext = zo'o ta jitfa .i .e'o xu do pendo mi
}}

==Explanation==
{{w|Lojban}} is a constructed language designed to be logical, unambiguous, and culturally neutral — similar to the better known artificial language {{w|Esperanto}}. The authors originally designed it as an experiment, but a few people have picked it up and tried to learn it. However, anyone actually willing to learn Lojban is someone [[Black Hat]] would rather avoid. Alternately, only people who speak Lojban, who compose an admittedly tiny proportion of the general population, could benefit from the logic of the language, making the benefits of Lojban mostly pointless to most people.

Clicking on the original comic brings you to [https://imgs.xkcd.com/comics/lojban_translated.png a Lojban translation of the comic]. The Lojban version literally translates to something like:
:Cueball: Hypothetically, you becoming an expert in Lojban implies things you say would completely be an unambiguous meaning and logical.
:Black Hat: Agreed, but would be talking to the people subgroup that is an expert in Lojban.
If reading pedantically, a few mistakes can be identified:
* "Hypothetically" is applied to the entire first sentence rather than the subclause "you are an expert in Lojban".
* The word "pavysmu" is used in a way that indicates the things being said ''are'' an unambiguous meaning, rather than having a single meaning.
* The subgroup of people is specified as being an expert in Lojban, not the people in it.

The title text is also written in Lojban. It translates roughly as: "That was a joke. Really. Wanna be friends with me?" Since Lojban aims to be completely unambiguous, idiomatic structures like sarcasm and humor have associated particles - when a joke is made, it must be ''explicitly'' marked as such or else it's incorrect. Most languages rely on intonation expressing this, but Lojban does not, leading to the strange practice here of specifically pointing out that a joke was made.

A more literal translation gives: "Humorously that false. Please is-it-true-that you friend me?"

==Transcript==
:[Cueball and Black Hat are having a conversation.]
:[English version:]
:Cueball: If you learned to speak Lojban, your communication would be completely unambiguous and logical.
:Black Hat: Yeah, but it would all be with the kind of people who learn Lojban.

:[Lojban version:]
:Cueball: da'i ganai do crebi'o la lojban gi le se cusku be do cu mulno pavysmu je logji
:Black Hat: .i .ie ku'i cusku fi le prenu klesi poi certu la lojban

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Black Hat]]
[[Category:Language]]

1440: Geese

2022-05-26T17:27:34Z

BetaOS: Undo revision 279075 by Donald Trump (talk)

{{comic
| number = 1440
| date = October 29, 2014
| title = Geese
| image = geese.png
| titletext = Anyway, that's a common misconception. Geese live for a long time; all the ones we can see will probably keep flying around for billions of years before they explode.
}}

==Explanation==
[[Megan]] is commenting on a flock of geese passing overhead and says the light from the geese reaching their eyes now could have come from hundreds of years ago. This is a fact for the light from stars, but not for light from geese{{Citation needed}}. [[Cueball]] points out the absurdity of Megan's statement by pointing out that the geese are only a few hundred yards away rather than a few hundred light years. She continues along the same lines when she implies to Cueball that he is observing a past version of her, despite them being only a few feet apart. Technically he ''is'' viewing a past version of her, but not one from "long ago"; if someone is two feet away from you, you are seeing them as they were roughly [http://www.wolframalpha.com/input/?i=2+feet+%C3%B7+air+speed+of+light 2 nanoseconds] ago.

In the title-text Megan continues to treat the geese as if they were stars, which "live" for a few billion years before exploding. Most stars visible with naked eye are within a thousand light-years of Earth, (as discussed in [[1342: Ancient Stars]]), and it's unlikely that any star Megan currently sees actually exploded within the relatively short span of last few thousand years.

Megan's statement "You're hearing how they once sounded." is somewhat more justified - sound from "a few hundred yards away" would take about [http://www.wolframalpha.com/input/?i=400+yards+%C3%B7+air+speed+of+sound one second] to be heard (depending on the exact distance and the prevailing atmospheric conditions). That said, the sound of a goose isn't likely to change enough over the course of a second or two to make this distinction particularly significant.

The strip may also take inspiration from Gamow's "Mr. Tompkins" stories which were designed to help laymen understand some of the consequences of relativity and quantum mechanics. In one of the stories Mr Tompkins visits a town where the speed of light is 30 miles per hour. For the light to have taken hundreds of years to go from the geese to Megan and Cueball, the speed of light in this strip would have to be much slower than in Gamow's story.

Randall has previously mentioned a related misconception in [[1342: Ancient Stars]]. In [[1422: My Phone is Dying]], a phone's "death" is compared to the death of a star.

==Transcript==
:[Geese fly in V-formation. Megan and Cueball are lying on the ground, watching them.]
:Megan: To think... we're seeing light that left those geese centuries ago.
:Megan: By now, they could be long dead.
:Cueball: ...What? They're a few hundred yards away. I hear them honking.
:Megan: Ah, yes. You're hearing how they once sounded.
:Cueball: You're very weird.
:Megan: Or I was, long ago...

{{comic discussion}}
[[Category:Astronomy]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Animals]]

1888: Still in Use

2022-05-26T17:27:19Z

BetaOS: Undo revision 279065 by Donald Trump (talk)

{{comic
| number = 1888
| date = September 11, 2017
| title = Still in Use
| image = still_in_use.png
| titletext = 'Which one?' 'I dunno, it's your house. Just check each object.' 'Check it for *what*?' 'Whether it looks like it might have touched a paper towel at some point and then forgotten to let go.' '...' 'You can also Google to learn how to check which things are using which resources.' 'You know, I'll just leave the towel there and try again tomorrow.'
}}

==Explanation==
[[Cueball]] is trying to remove the trash bag from his garbage can. However, the can refuses to let him do so, citing that a paper towel in the trash is being used by some object in his home.

This comic draws parallels between the act of emptying a physical rubbish bin and emptying the {{w|Trash (computing)|recycle bin}} integrated into a desktop computing environment like Windows, macOS, most Linux derivatives, and others. It originated with the {{w|Xerox Alto}}, but was first commercially introduced on {{w|Apple Lisa}} in 1982 called ''Wastebasket'' and, while it was adopted by most other desktop environment operating system, using slightly different names, the main purpose still remains: A user can restore a file after they have deleted it -- hence the most common name ''recycle bin'', you still can get your ''paper towel'' and use it again. In many (earlier) command line based systems like DOS or UNIX/Linux (besides the desktop interfaces) a removed file was gone. Some ''undelete'' commands exist, but there are hard restrictions because the then free space on the hard drive must not have been used again and often file names aren't fully recoverable.

But sometimes when attempting to delete files, a running program may still have the file marked as in use. The operating system will therefore prevent the file's deletion, but some do not tell the user which program is using the file.

Preventing the file from being deleted from the file system in this case may be a correct behavior, because the document is still being worked on. But sometimes it may happen erroneously, perhaps because of a program not closing the file properly, a glitch in the operating system, or user error. The user then is required to find the cause of the problem and rectify it before the file can be deleted. This may be difficult because error messages may not reveal the affected file or the program blocking its removal. Similar problems may occur when unmounting (or "safely removing") a removable storage device.

The title text may refer to a simple solution to these sorts of problems: Wait a while, perhaps overnight, and see if the (unknown) application(s) have closed the open file(s). Alternatively, the user can shut down the system to make absolutely sure that nothing is using anything. This is usually effective and harmless -- programs that ''falsely'' flagged something in the recycle bin as "in use" usually won't recreate the problem when the computer finishes booting up -- but this is really not a convenient solution for the user because all applications are closed.

== Solutions ==
Advanced users may be inconvenienced by unhelpful error messages but at least are likely to know the tools available to solve the problem. However, a less experienced user just trying to free some space is not only annoyed, their only solution is to reboot or shut down the computer.

Some tools:
* On Windows, the [https://docs.microsoft.com/en-us/sysinternals/downloads/handle "handle"] command line tool allows listing, searching, and closing file handles, showing the associated process.
* On Linux and OS X there is a command line tool {{w|lsof}} (list open files) which also lists open sockets and more. If the filename or program name is known, the usefulness of this tool is vastly enhanced by combining it with {{w|grep}}.
* Unix systems derived from SVR4 have the {{w|fuser (Unix)|fuser(1)}} command (fstat(1) on BSD) that lists and optionally kills the process keeping a file open. It's useful on shutdowns because open files can prevent unmounting filesystems, potentially leaving them a mess.

==Transcript==
:[Cueball is trying to take out a trash bag from his garbage can.]
:Trash: Sorry, you can't empty the garbage yet. A paper towel in here is currently in use by some object in your house.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Computers]]

1611: Baking Soda and Vinegar

2022-05-26T17:27:07Z

BetaOS: Undo revision 279058 by Donald Trump (talk)

{{comic
| number = 1611
| date = December 2, 2015
| title = Baking Soda and Vinegar
| image = baking_soda_and_vinegar.png
| titletext = Sure, it may not meet science fair standards, but I want credit for getting my baking soda and vinegar mountain added to the Decade Volcanoes list.
}}

==Explanation==
In popular fiction (and maybe in part in fact) the "{{w|Sodium bicarbonate|Baking Soda}} and {{w|Vinegar}}" {{w|volcano}} is often a staple image of the science nerd at the science fair (see [https://sciencebob.com/the-erupting-volcano/ example here]), unless all the science nerds are doing ''real'' imaginative science and the student(s) with the volcano exhibit are dragging out the old hackneyed stereotype. It may also be age-dependent, this being something that is relatively advanced science for the lower grades but rather a childish experiment in the hands of older students.

[[Ponytail]] is about to point out any one of a number of flaws with the trope. For one thing, while the project may exhibit interesting physical phenomena of the sort that some scientists study, the project itself doesn't actually teach anything about the scientific method. {{w|Science fair|Actual science fairs}} are usually intended to teach students about the scientific method by exercising it firsthand: subjecting hypotheses to appropriately rigorous experimentation, and reporting on the results. The cliché volcano exhibit doesn't teach any of this, and may instead reinforce the idea that science is about cool explosions and not a system of inquiry. Further, the exhibit doesn't (usually) actually demonstrate anything about real volcanic activity: it is relatively simple chemistry involving the reaction of acetic acid in vinegar and sodium bicarbonate in baking soda to produce sodium acetate and (notably) a vigorous froth made up of bubbles of carbon dioxide. It is often dressed up to look more impressive, such as by using dye or other additives to make the 'eruption' look more 'realistic,' but it often fails to replicate important features of actual volcanic eruptions, such as the flow of lava, associated seismic events or the collapse of part of the volcanic crater. Most people doing soda volcano projects don't even explain what's happening.

[[Science Girl]] has made a little more of her volcano, however, as it seems to go beyond simple chemistry. The model replicates many of the dangers (aside from the pure lava) of a volcano, and appears to have been given scaled-down vehicles (not visible in the comic) trying (and failing) to escape the dangers of the resultant mud-flows (a.k.a. {{w|lahar|lahars}} in professional terminology) being modeled. Ponytail contradicts her early reaction by also not liking the more realistic model, although it is the carnage she dislikes, not that it has more correct details of the eruption itself.

Even more, this is not an isolated 'model volcano' but a vinegar-powered representation of a geological 'hot spot', such as with the islands of Hawaii, in which the spot moves with respect to the Earth's crust (or vice-versa) and generates a new volcano some way off. Despite this model being supported on a table, it appears that the 'project' extends some way beyond that and has somehow contrived further eruptions away from the table, the room and probably even the building.

The 'project' seems to be turning into a very thorough model of a much larger geological process (a {{w|Supervolcano}} like {{w|Yellowstone Caldera|the one}} under {{w|Yellowstone National Park|Yellowstone}}) and destined to produce a ''very real'' {{w|volcanic winter}}. Where a magma-powered volcano could produce vast clouds of dust, preventing the sun's energy from warming the Earth, in this case it's the airborne salt (probably sodium acetate) from the chemical reaction that appears to be in danger of causing crop failure. There's no mention of the corresponding environmental effects of the vast amounts of carbon dioxide (and/or aqueous carbonic acid) necessarily released in proportion to the ejected salt (presumably itself not left in solution).

It is especially troubling that the child even mentions that her model volcano is an offshoot of a baking soda ''super''volcano. Supervolcanoes are massive volcanoes, far larger than even those on the list of {{w|Decade Volcanoes}} (mentioned in the title text), whose eruption would likely trigger species-level extinction events comparable to the dinosaur extinction. Humanity can only hope the child is exaggerating in her description, but the symptoms witnessed by the adult looking out the window suggest otherwise. {{w|Campi Flegrei}} is actually a real life example of her project.

When someone (presumably the dark haired woman) says she wants to stop learning, Science Girl grimly states that "Soon, we all will", alluding to their impending doom.

[[Randall]] has mentioned supervolcanoes before in [[1053: Ten Thousand]] (title text) and [[1159: Countdown]], making it a recurring interest of his. The volcano [http://www.explainxkcd.com/wiki/images/6/6a/Entire_Volcano_zoom_out.png Mount Doom] was depicted to the far left in the game [[1608: Hoverboard]] released a week before this comic. It may not be a supervolcano, but quite potent anyway... Later this comic was directly referenced in the seventh panel of [[1714: Volcano Types]], where it is up to the reader to decide it this is Science Girl's model people or what happens outside on her supervolcano.

In the title text the student expects extra credit for getting her model volcano added to the Decade Volcanoes list, a list maintained by {{w|International Association of Volcanology and Chemistry of the Earth's Interior}} of the world's most dangerous volcanoes (currently 16). It is either an absurd notion or a very troubling achievement that a science fair project could achieve the threat level posed by the likes of {{w|Mount Vesuvius}} (which destroyed ancient Pompeii in Italy, and threatens modern-day Naples in the same manner), {{w|Mount Rainier}} (whose lahars could potentially destroy parts of Seattle) or {{w|Mauna Loa}} (which could create a massive landslide, triggering a major tsunami that would threaten all of Hawaii). But if the volcano erupting outside is scaled down to match the scale of her original model volcano, at least that means that it was only a "local" volcano event and not a supervolcano event that she created, so it would only doom the local area.

==Transcript==
:[Ponytail is standing behind Science Girl who has one hand up. They are looking at a table with a model volcano.]
:Science Girl: My science project is a baking soda and vinegar volcano!

:[A larger frame that includes Megan who stands to the right. Ponytail is a little further back and Science Girl has taken her hand down. The baking soda volcano erupts in a small upwards explosion.]
:Ponytail: Why do people make these? It isn't really even a science project. It doesn't teach anything about-
:Volcano: '''''Foom!'''''

:[Smaller frame again. Ponytail has moved closer to the table, Science Girl moves around the table to the right, pointing at the volcano while Megan walks closer. The "lava" flows down the volcano on both sides.]
:Science Girl: See how the baking soda and vinegar mix with mud and ice to form deadly flowing lahars?

:[Zoom in on Science Girls head close to the stream of lava going down the lower part of the volcano's right slope.]
:Science Girl: You can see the tiny cars trying to flee.
:Science Girl: Whoops! Too slow.

:[Zoom in on Ponytail.]
:Ponytail: Um. This is a bit grim.
:Science Girl (off panel): Learning!

:[Science Girl stand to the right of the table looking at the now still volcano. Shaky lines surround a sound effect written over the top of this slim frame:]
: ''Rumble''

:[Back to showing all three as before. Science Girl lift a finger in the air.]
:Science Girl: And now we're learning that this volcano is an offshoot of a vinegar hotspot rising from deep within the earth.
:Science Girl: ''Annnd...''

:[Science Girl turns away from the table looking right as a loud noise can be heard off-panel, depicted in white text on a wavy black bubble:]
:<big>''Boooom''</big>

:[Megan has walked over to a window to the right. It has the blinds drawn down. She opens a hole in the blinds by pulling down in the middle. It is dark outside. The other two are outside the frame to the left.]
:Science Girl (off panel): The baking soda supervolcano erupts, injecting clouds of salt into the stratosphere.
:Megan: Why is it getting dark outside?
:Science Girl (off panel): Learning is fun!

:[We see Science Girl standing close to the table, of which only the right leg can be seen. She holds up a tablet with a graph showing a rising trend. The other two are both out of the frame.]
:Science Girl: Sunlight dims. The earth cools. Summer frosts form. Crops die. We check the markets. Grain prices are rising.
:Megan (off panel): I want to stop learning now.
:Science Girl: Soon, we all will.

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Science Girl]]
[[Category:Science]]
[[Category:Geology]]
[[Category:Volcanoes]]

776: Still No Sleep

2022-05-26T17:26:51Z

BetaOS: Undo revision 279054 by Donald Trump (talk)

{{comic
| number = 776
| date = August 6, 2010
| title = Still No Sleep
| image = still no sleep.png
| titletext = I'm not listening to you. I mean, what does a SQUIRREL know about mental health?
}}

==Explanation==
Lack of sleep causes hallucinations different from insanity — insane people find it very difficult or impossible to distinguish between a hallucination and reality because the part of their brain that checks for normality in a situation is also broken. Level-1 sleep hallucinations do not make it through this "sanity filter" in a sane human being.

[[Cueball]] has been sleep deprived for quite a while now, and he begins questioning his reality. He wonders if he is awake, or he is dreaming. He also wonders whether or not he is hallucinating a tree, then proceeding to question whether his hallucination might be a hallucination, and he might actually be sane. This double negative would '''not''' work mainly due to the fact that if you are hallucinating a hallucination, you are still hallucinating, and most likely you are not completely sane. In the end a squirrel comes up to him, and tells him not to worry about the possibility that he might be sane, thereby proving that [[Cueball]] is at the very least, hallucinating.

In the title text, [[Cueball]] doesn't want to listen to the squirrel because, "what does a SQUIRREL know about mental health?" This is final proof that [[Cueball]] is insane, because he cannot distinguish between a hallucination and reality (talking to a squirrel).

==Transcript==
:[Woozy Cueball walks and speaks.]
:Cueball: The sleep deprivation madness worsens.

:[Cueball examines his hands.]
:Cueball: Things seem unreal. Am I even awake? Maybe I'm dreaming.

:[Cueball approaches a tree with a squirrel on it.]
:Cueball: I'm pretty sure I'm hallucinating this tree.

:[Cueball is now in front of the tree, and the squirrel is on the ground. Cueball has his arms open.]
:Cueball: But what if I'm hallucinating that I'm hallucinating, and I'm actually totally sane?
:Squirrel: Listen.
:Squirrel: I wouldn't worry about that.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Squirrels]]

List of all comics (3000-3500)

2022-05-26T17:25:55Z

BetaOS: Undo revision 278349 by Donald Trump (talk)

This is the list of comics from '''2501 to {{LATESTCOMIC}}'''.
:For the first 500 comics, see [[List of all comics (1-500)]].
:For comics 501-1000, see [[List of all comics (501-1000)]].
:For comics 1001-1500, see [[List of all comics (1001-1500)]].
:For comics 1501-2000, see [[List of all comics (1501-2000)]].
:For comics 2001-2500, see [[List of all comics (2001-2500)]].
: The whole list is available at [[List of all comics (full)]].

You may also see the list of comics in the order they appeared at the [https://xkcd.com/archive/ xkcd archive].

{| class="wikitable sortable plainlinks table-padding"
|-
!xkcd
!Title
!Talk
!Image
!Date<onlyinclude>
{{comicsrow|2624|2022-05-25|Voyager Wires|voyager wires.png}}
{{comicsrow|2623|2022-05-23|Goofs|goofs.png}}
{{comicsrow|2622|2022-05-20|Angular Diameter Turnaround|angular diameter turnaround.png}}
{{comicsrow|2621|2022-05-18|Mainly Known For|mainly known for.png}}
{{comicsrow|2620|2022-05-16|Health Data|health data.png}}
{{comicsrow|2619|2022-05-13|Crêpe|crepe.png}}
{{comicsrow|2618|2022-05-11|Selection Bias|selection bias.png}}
{{comicsrow|2617|2022-05-09|Maps|maps.png}}
{{comicsrow|2616|2022-05-06|Deep End|deep_end.png}}
{{comicsrow|2615|2022-05-04|Welcome Back|welcome_back.png}}
{{comicsrow|2614|2022-05-02|2|2.png}}
{{comicsrow|2613|2022-03-29|Bad Map Projection: Madagascator|bad map projection madagascator.png}}
{{comicsrow|2612|2022-04-27|Lightsabers|lightsabers.png}}
{{comicsrow|2611|2022-04-25|Cutest-Sounding Scientific Effects|cutest sounding scientific effects.png}}
{{comicsrow|2610|2022-04-22|Assigning Numbers|assigning numbers.png}}
{{comicsrow|2609|2022-04-20|Entwives|entwives.png}}
{{comicsrow|2608|2022-04-18|Family Reunion|family reunion.png}}
{{comicsrow|2607|2022-04-15|Geiger Counter|geiger counter.png}}
{{comicsrow|2606|2022-04-13|Weird Unicode Math Symbols|weird unicode math symbols.png}}
{{comicsrow|2605|2022-04-11|Taylor Series|taylor series.png}}
{{comicsrow|2604|2022-04-08|Frankenstein Captcha|frankenstein captcha.png}}
{{comicsrow|2603|2022-04-06|Childhood Toys|childhood toys.png}}
{{comicsrow|2602|2022-04-04|Linguistics Degree|linguistics degree.png}}
{{comicsrow|2601|2022-04-01|Instructions|instructions.png}}
{{comicsrow|2600|2022-03-30|Rejected Question Categories|rejected question categories.png}}
{{comicsrow|2599|2022-03-28|Spacecraft Debris Odds Ratio|spacecraft debris odds ratio.png}}
{{comicsrow|2598|2022-03-25|Graphic Designers|graphic designers.png}}
{{comicsrow|2597|2022-03-23|Salary Negotiation|salary negotiation.png}}
{{comicsrow|2596|2022-03-21|Galaxies|galaxies.png}}
{{comicsrow|2595|2022-03-18|Advanced Techniques|advanced techniques.png}}
{{comicsrow|2594|2022-03-16|Consensus Time|consensus time.png}}
{{comicsrow|2593|2022-03-14|Deviled Eggs|deviled eggs.png}}
{{comicsrow|2592|2022-03-11|False Dichotomy|false dichotomy.png}}
{{comicsrow|2591|2022-03-09|Qua|qua.png}}
{{comicsrow|2590|2022-03-07|I Shouldn't Complain|i shouldnt complain.png}}
{{comicsrow|2589|2022-03-04|Outlet Denier|outlet denier.png}}
{{comicsrow|2588|2022-03-02|Party Quadrants|party quadrants.png}}
{{comicsrow|2587|2022-02-28|For the Sake of Simplicity|for the sake of simplicity.png}}
{{comicsrow|2586|2022-02-25|Greek Letters|greek letters.png}}
{{comicsrow|2585|2022-02-23|Rounding|rounding.png}}
{{comicsrow|2584|2022-02-21|Headline Words|headline words.png}}
{{comicsrow|2583|2022-02-18|Chorded Keyboard|chorded keyboard.png}}
{{comicsrow|2582|2022-02-16|Data Trap|data trap.png}}
{{comicsrow|2581|2022-02-14|Health Stats|health stats.png}}
{{comicsrow|2580|2022-02-11|Rest and Fluids|rest and fluids.png}}
{{comicsrow|2579|2022-02-09|Tractor Beam|tractor beam.png}}
{{comicsrow|2578|2022-02-07|Sword Pull|sword pull.png}}
{{comicsrow|2577|2022-02-04|Sea Chase|sea chase.png}}
{{comicsrow|2576|2022-02-02|Control Group|control group.png}}
{{comicsrow|2575|2022-01-31|What If? 2|what if 2.png}}
{{comicsrow|2574|2022-01-28|Autoresponder|autoresponder.png}}
{{comicsrow|2573|2022-01-26|Alien Mission|alien mission.png}}
{{comicsrow|2572|2022-01-24|Alien Observers|alien observers.png}}
{{comicsrow|2571|2022-01-21|Hydraulic Analogy|hydraulic analogy.png}}
{{comicsrow|2570|2022-01-19|Captain Picard Tea Order|captain picard tea order.png}}
{{comicsrow|2569|2022-01-17|Hypothesis Generation|hypothesis generation.png}}
{{comicsrow|2568|2022-01-14|Spinthariscope|spinthariscope.png}}
{{comicsrow|2567|2022-01-12|Language Development|language development.png}}
{{comicsrow|2566|2022-01-10|Decorative Constants|decorative constants.png}}
{{comicsrow|2565|2022-01-07|Latency|latency.png}}
{{comicsrow|2564|2022-01-05|Sunshield|sunshield.png}}
{{comicsrow|2563|2022-01-03|Throat and Nasal Passages|throat and nasal passages.png}}
{{comicsrow|2562|2021-12-31|Formatting Meeting|formatting meeting.png}}
{{comicsrow|2561|2021-12-29|Moonfall|moonfall.png}}
{{comicsrow|2560|2021-12-27|Confounding Variables|confounding variables.png}}
{{comicsrow|2559|2021-12-24|December 25th Launch|december 25th launch.png}}
{{comicsrow|2558|2021-12-22|Rapid Test Results|rapid test results.png}}
{{comicsrow|2557|2021-12-20|Immunity|immunity.png}}
{{comicsrow|2556|2021-12-17|Turing Complete|turing complete.png}}
{{comicsrow|2555|2021-12-15|Notifications|notifications.png}}
{{comicsrow|2554|2021-12-13|Gift Exchange|gift exchange.png}}
{{comicsrow|2553|2021-12-10|Incident Report|incident report.png}}
{{comicsrow|2552|2021-12-08|The Last Molecule|the last molecule.png}}
{{comicsrow|2551|2021-12-06|Debunking|debunking.png}}
{{comicsrow|2550|2021-12-03|Webb|webb.png}}
{{comicsrow|2549|2021-12-01|Edge Cake|edge cake.png}}
{{comicsrow|2548|2021-11-29|Awful People|awful people.png}}
{{comicsrow|2547|2021-11-26|Siren|siren.png}}
{{comicsrow|2546|2021-11-24|Fiction vs Nonfiction|fiction vs nonfiction.png}}
{{comicsrow|2545|2021-11-22|Bayes' Theorem|bayes theorem.png}}
{{comicsrow|2544|2021-11-19|Heart-Stopping Texts|heart stopping texts.png}}
{{comicsrow|2543|2021-11-17|Never Told Anyone|never told anyone.png}}
{{comicsrow|2542|2021-11-15|Daylight Calendar|daylight calendar.png}}
{{comicsrow|2541|2021-11-12|Occam|occam.png}}
{{comicsrow|2540|2021-11-10|TTSLTSWBD|ttsltswbd.png}}
{{comicsrow|2539|2021-11-08|Flinch|flinch.png}}
{{comicsrow|2538|2021-11-05|Snack|snack.png}}
{{comicsrow|2537|2021-11-03|Painbow Award|painbow award.png}}
{{comicsrow|2536|2021-11-01|Wirecutter|wirecutter.png}}
{{comicsrow|2535|2021-10-29|Common Cold Viruses|common cold viruses.png}}
{{comicsrow|2534|2021-10-27|Retractable Rocket|retractable rocket.png}}
{{comicsrow|2533|2021-10-25|Slope Hypothesis Testing|slope hypothesis testing.png}}
{{comicsrow|2532|2021-10-22|Censored Vaccine Card|censored vaccine card.png}}
{{comicsrow|2531|2021-10-20|Dark Arts|dark arts.png}}
{{comicsrow|2530|2021-10-18|Clinical Trials|clinical trials.png}}
{{comicsrow|2529|2021-10-15|Unsolved Math Problems|unsolved math problems.png}}
{{comicsrow|2528|2021-10-13|Flag Map Sabotage|flag map sabotage.png}}
{{comicsrow|2527|2021-10-11|New Nobel Prizes|new nobel prizes.png}}
{{comicsrow|2526|2021-10-08|TSP vs TBSP|tsp vs tbsp.png}}
{{comicsrow|2525|2021-10-06|Air Travel Packing List|air travel packing list.png}}
{{comicsrow|2524|2021-10-04|Comet Visitor|comet visitor.png}}
{{comicsrow|2523|2021-10-01|Endangered|endangered.png}}
{{comicsrow|2522|2021-09-29|Two-Factor Security Key|two factor security key.png}}
{{comicsrow|2521|2021-09-27|Toothpaste|toothpaste.png}}
{{comicsrow|2520|2021-09-24|Symbols|symbols.png}}
{{comicsrow|2519|2021-09-22|Sloped Border|sloped border.png}}
{{comicsrow|2518|2021-09-20|Lumpers and Splitters|lumpers and splitters.png}}
{{comicsrow|2517|2021-09-17|Rover Replies|rover replies.png}}
{{comicsrow|2516|2021-09-15|Hubble Tension|hubble tension.png}}
{{comicsrow|2515|2021-09-13|Vaccine Research|vaccine research.png}}
{{comicsrow|2514|2021-09-10|Lab Equipment|lab equipment.png}}
{{comicsrow|2513|2021-09-08|Saturn Hexagon|saturn hexagon.png}}
{{comicsrow|2512|2021-09-06|Revelation|revelation.png}}
{{comicsrow|2511|2021-09-03|Recreate the Conditions|recreate the conditions.png}}
{{comicsrow|2510|2021-09-01|Modern Tools|modern tools.png}}
{{comicsrow|2509|2021-08-30|Useful Geometry Formulas|useful geometry formulas.png}}
{{comicsrow|2508|2021-08-27|Circumappendiceal Somectomy|circumappendiceal somectomy.png}}
{{comicsrow|2507|2021-08-25|USV-C|usv c.png}}
{{comicsrow|2506|2021-08-23|Projecting|projecting.png}}
{{comicsrow|2505|2021-08-20|News Story Reaction|news story reaction.png}}
{{comicsrow|2504|2021-08-18|Fissile Raspberry Isotopes|fissile raspberry isotopes 2x.png}}
{{comicsrow|2503|2021-08-16|Memo Spike Connector|memo spike connector.png}}
{{comicsrow|2502|2021-08-13|Every Data Table|every data table.png}}
{{comicsrow|2501|2021-08-11|Average Familiarity|average familiarity.png}}</onlyinclude>
|}

[[Category:Comics| ]]

399: Travelling Salesman Problem

2022-05-26T17:25:45Z

BetaOS: Undo revision 277957 by Donald Trump (talk)

{{comic
| number = 399
| date = March 21, 2008
| title = Travelling Salesman Problem
| image = travelling_salesman_problem.png
| titletext = What's the complexity class of the best linear programming cutting-plane techniques? I couldn't find it anywhere. Man, the Garfield guy doesn't have these problems...
}}

==Explanation==
The {{w|Travelling salesman problem|travelling salesman problem}} is a classic problem in computer science. An intuitive way of stating this problem is that given a list of cities and the distances between pairs of them, the task is to find the shortest possible route that visits each city exactly once and then returns to the origin city. A naïve solution solves the problem in {{w|Factorial|O(n!) time}} (where n is the size of the list), simply by checking all possible routes, and selecting the shortest one. However, this approach will take a long time as the number of possible routes increases exponentially as more nodes are included.

A more efficient {{w|Dynamic programming|dynamic programming}} approach yields a solution in O(n22n) time. These times are given using {{w|Big O notation}}, which is commonly used in computer science to show the efficiency or complexity of a solution or algorithm.

The joke is that the salesman selling online (say on {{w|eBay}}, {{w|Amazon Marketplace}}, or other virtual marketplace) does not have to worry about this problem, since he does not need to travel (which makes the time to find the best solution O(1)), to which the travelling salesman angrily responds, "Shut the hell up."

The title text wonders about the time complexity of the {{w|Cutting-plane method|cutting-plane method}}, which is sometimes used to solve optimization problems.

The last sentence suggests the downside for Randall of drawing comics about computer science; he sometimes encounters problems to which he cannot find the answer, whereas authors of simpler comics such as {{w|Garfield}} do not have this problem. This is also likely a reference to [[78: Garfield]], which parodies Garfield's simplicity.

The map almost certainly depicts the United States, with the locations highlighted suspected to be (from left to right): Seattle, San Francisco, Los Angeles, Phoenix, Denver, Minneapolis, Dallas, San Antonio, Houston, Chicago (cut off), Detroit, Atlanta, Miami, Washington D.C., Philadelphia, New York, and Boston.

This is so far the only comic featuring the Brown Hat character.

Also see earlier strip [[287: NP-Complete]].

==Transcript==
:[There is a linked black web, with a path in red; it appears to be a map of the United States.]
:Brute-force solution:O(n!)
:[The web continues in this one. A man with a brown hat and a case is drawing it.]
:Dynamic programming algorithms: O(n22n)
:[Another man, with a brown hat too, is at a computer, looking back over the chair.]
:Selling on eBay: O(1)
:eBay salesman: Still working on your route?
:Drawing salesman: Shut the hell up.

{{comic discussion}}
[[Category:Comics with color]]
[[Category:Math]]
[[Category:Programming]]

765: Dilution

2022-05-26T17:25:35Z

BetaOS: Undo revision 277147 by Donald Trump (talk)

{{comic
| number = 765
| date = July 12, 2010
| title = Dilution
| image = dilution.png
| titletext = Dear editors of Homeopathy Monthly: I have two small corrections for your July issue. One, it's spelled "echinacea", and two, homeopathic medicines are no better than placebos and your entire magazine is a sham.
}}

==Explanation==
{{w|Homeopathy}} is the belief that poisons, bacteria, and other harmful substances can actually cure the diseases they normally cause, if they are administered in sufficiently dilute form. The normal procedure is to prepare a solution, then successively dilute it with water or alcohol by multiple factors of 10. (There's also a "succussion" step between rounds, which basically consists of shaking or striking the mixture, but no serious mechanism for how this would affect anything has been provided.) In the medical world, {{rw|homeopathy|it's known to be total bunk}}, with countless scientific studies repeatedly showing it to have no more effectiveness than a {{w|placebo}}.

Here we find [[Cueball]], a firm believer in homeopathy, applying the idea to fertility by diluting his semen. 30X means that the semen has been diluted with water at a 1:10 ratio 30 times, so the solution contains 1 part semen to one-nonillion (1,000,000,000,000,000,000,000,000,000,000) parts water. Since the average ejaculation contains 200 to 500 million sperm cells, this means the solution Cueball is holding has a 3.5x10-20% chance of containing even a single sperm cell. Clearly, [[Megan]] will not be getting pregnant from this, so she and Cueball will not be passing on their genes, which is why the comic states that the belief in homeopathy is not selected for.

According to the belief of homeopathy, diluted sperm should not help in getting pregnant, but help to cure the symptoms, e.g. pregnancy, caused by it. So even if diluting it 30X, would have a homeopathic effect, it would be the opposite of the one Cueball states he wants to achieve.

{{w|Echinacea}} is a genus of flowers commonly used in herbal remedies to stimulate the immune system. Scientific studies have not shown that such an effect exists. The title text is intended to represent a letter to the editors of fictitious journal 'Homeopathy Monthly', starting with a minor complaint that they seem unable to perform the basic proof-reading and fact-checking necessary to correctly spell one of the most well-known herbal remedies. This is followed up by a complete dismissal of homeopathy as a whole and the magazine in particular.

==Transcript==
:[Cueball stands at a desk with a beaker in one hand and a turkey baster in the other. Megan lies in a bed in the same room.]

:Cueball: Okay, this time I've diluted the semen 30x.
:Megan: We'll be ''sure'' to get pregnant now!

:Belief in homeopathy is not, evolutionarily, selected for.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Sex]]
[[Category:Comics featuring Megan]]

2624: Voyager Wires

2022-05-26T17:25:12Z

BetaOS: Undo revision 278652 by Donald Trump (talk)

{{comic
| number = 2624
| date = May 25, 2022
| title = Voyager Wires
| image = voyager_wires.png
| titletext = Also, they're getting increasingly worried that someone will accidentally hit the 'retract' button, and that the end of the cable thrashing around as it winds up could devastate the Earth's surface.
}}

==Explanation==
{{incomplete|Created by a WIRE CUT BECAUSE OF BUDG- are you there houston? it's me v----ger, you'll never guess what I found! Please change this comment when editing this page. Do NOT delete this tag too soon.}}
This comic claims that the {{w|Voyager program|Voyager probe}}s communicate with NASA though ridiculously long copper wires. These wires would have to be continuously lengthened as the probes travel away from Earth. Supposedly, because of "high copper prices and budget constraints," they may not be able to afford to lengthen the wires much longer. If this occurred, they would have to either cut the wires or let them break, which would prevent any further communication with the probes. In reality [https://voyager.jpl.nasa.gov/mission/status/ they use radio waves], not long copper wires, so this will not actually happen.

If copper wires were dragged by the Voyager probes, assuming a 1mm² thick cable, 550 tons of copper would be needed per hour and it would add 1 million Ohm per hour to the cable resistance. At [https://www.moneymetals.com/copper-prices $8,560/ton], this would cost $41 billion dollars/year, which would be nearly twice [https://www.planetary.org/space-policy/nasas-fy-2022-budget NASA's entire annual budget].

The resulting wire would slow down the probes by drag, but be perfect space elevators for lightweight spacecraft.
Since the Earth spins, the wires would also spool around the Earth, slowing the probes down even further. Clearly, this is not a good idea.{{Citation needed}} This problem might be avoided if the wires reached earth at one of the poles. Or perhaps they could go to an airplane that flies around earth at exactly 15 degrees of longitude per hour, with periodic air-to-air refueling, so that it is always on the side of the earth facing the probe.

Because the Voyager probes aren't in the plane of the earth's orbit around the sun, the Earth would not, in its rotation around the sun, drag these copper wires through the sun. If it did, the wires would melt.{{Citation needed}}

The title text references the phenomenon seen with self-retracting cables, such as are commonly found on vacuum cleaners, where the free end of the cable, where the plug is, oscillates more and more wildly as the cable approaches full retraction, leading to the danger of a painful rap on the hand if it is not withdrawn in time. A planet-sized impact of this kind could cause severe damage.

A few days before this comic was released, [https://voyager.jpl.nasa.gov/news/details.php?article_id=124 NASA had reported] receiving corrupted attitude data from the Voyager 1 probe. The fact that they are receiving any data at all means that the attitude control system must be working (or else the antenna would not point at Earth), but they continue to investigate how that data could be corrupted after that point.

;Spoiler alert
The consequence of a cable between a craft in space and a planetary location being suddenly retracted was recently imagined in the first episode of the Apple TV+ series ''{{w|Foundation (TV series)|Foundation}}'', wherein a {{w|space elevator}} tether was severed. [https://www.youtube.com/watch?v=huRmvG3zRpg It didn't end well for anyone other than the terrorists] who won the freedom of thousands of inhabited worlds which had formerly suffered under the jackbooted oppression of {{w|Trantor}}'s fascist galactic Empire regime.

==Transcript==
:[In the bottom right corner is a space probe, with large satellite dish and long antenna. Behind it runs a long wire, that makes three loops before it is connected to North America on the Earth in the top left corner. To the left of the Earth there is a second wire, which goes off-panel to the left. Below the panel there is a caption:]
:Sad news: Due to high copper prices and budget constraints, NASA may finally have to cut the wires that they've been spooling out to communicate with Voyager 1 and 2.

{{comic discussion}}

[[Category:Space probes]]

1763: Catcalling

2022-05-11T18:19:51Z

BetaOS: Undo revision 267108 by 👖🔥 (talk)

{{comic
| number = 1763
| date = November 23, 2016
| title = Catcalling
| image = catcalling.png
| titletext = Effect strength => [unstoppable] | Effect range => [2 miles] | Effect duration => [1 year]
}}

==Explanation==
"{{w|Street harassment|Catcalling}}" refers to the act of whistling or shouting to express sexual interest in a person, and often constitutes harassment. Annoyed by this practice, [[Megan]] alters the Universe Control Console to create a setting in which catcalling actually attracts cats (as the name implies), thus resulting in the catcaller being harassed by the overwhelming feline presence, instead of the other way around, likely in an attempt to discourage the act.

When read without the title text, it could be assumed that [[Megan]] is trying not to punish catcallers, but to turn catcalling into a positive thing, since after the change is made catcalling will no longer offend women and instead attract the attention of cats, an animal many people on the internet find cute.{{Citation needed}} It is only with the clarifying information in the title text that it becomes clear that Megan is trying to punish catcalling, thus changing the joke.

It is interesting to note that changing what women find insulting/harassment would involve fundamentally changing their psychology on some level. How exactly the Universal Control Console will make them immune to this specific behavior is unclear. The Universal Control Console is an intentionally ambiguous device, but based on how Megan and Ponytail used it in [[1620: Christmas Settings]], it can be implied to change people's memories of what reality was like before a change, so using the catcalling example, it might make everyone in the universe forget what catcalling initially was, thus removing the insult of even trying to do it in the first place.

The "Universe Control Console" was introduced in [[1620: Christmas Settings]] as the "Universe Control Panel", where it was used to control aspects of reality related to Christmas. Based on the name, it is presumed all aspects of reality could be altered using this fictitious device. The pointer arrow and menu options shown above Megan appear to depict aspects of the user interface that Megan is seeing. In [[2240: Timeline of the Universe]] someone hit the inflation switch starting the inflation again. And then someone stopped this by hitting the emergency stop. These must also be on the Universe Control Panel.

The Console appears to have been modified/upgraded since its last appearance and features fewer controls while gaining a joystick in this incarnation. It also appears that Megan has learned to operate the console better since first encountering it. ([[Ponytail]], who first demonstrated the console to Megan, could be the offscreen voice in this comic.)

Furthermore, the title text suggests that catcalling now attracts ''all'' cats within two miles for an entire year. The prospect of being piled in cats for a year would discourage people from catcalling by a large amount.{{Citation needed}} [[1156: Conditioning]] also persuades people to change behavior related to wildlife.

The redefining of terms related to sexual harassment as more innocent things has also been discussed in [[1178: Pickup Artists]].

Also, the cursor on the console is left-handed for some reason.

==Transcript==
:Offscreen: ''Hey! Are you messing with the Universe Control Console!?''

:Megan: [standing at a control panel with a small lever and what appears to be a display] It's cool. Just gotta fix one thing.

:[Megan still at the control panel; now a mouse pointer appears]

:[Megan still at the control panel; "Catcalling" appears written at the top of the panel above a dropdown menu that says "Harasses women"; the pointer is hovering over the arrow]

:[Megan still at the control panel; The dropdown menu is expanded to show two elements: "Harasses women" and "Attracts cats". The pointer is hovering over "Attracts cats", which is highlighted]

{{comic discussion}}

[[Category:Comics featuring Megan]]

1019: First Post

2022-05-11T18:19:29Z

BetaOS: Undo revision 265538 by 👖🔥 (talk)

{{comic
| number = 1019
| date = February 20, 2012
| title = First Post
| image = first_post.png
| titletext = 'Nuh-uh! We let users vote on comments and display them by number of votes. Everyone knows that makes it impossible for a few persistent voices to dominate the discussion.'
}}

==Explanation==
Many news websites allow users to post comments on an article. The intention is that users can debate the stance(s) or implication(s) made by the article. On most sites, comments are displayed in chronological order. This puts the oldest comments at the top and newest at the bottom.

There are many pitfalls to allowing comments, but this comic refers to one in particular: most users are too busy to read more than just the top few comments. Therefore, if you were able to control the content of those comments, your opinions would be the ones that the majority of users read. If you pay people to do nothing but read the site, you ensure that they will be the first ones to see the article and that their comments (that you pay them to write) will be at the top of the page. In this scenario, the comments being posted appear to convey a particular political belief. The advantage of this is, according to [[Randall]], that it would be much cheaper to employ a college student to perform that task than pay a website for an advertisement. Also, the fact that it is a comment posted by another reader would make it seem as though the opinion was coming from the general population and not a politician or company, as an advertisement would imply. And $20/hour was (and as of this writing still is) significantly higher than the {{w|minimum wage}}, so you'd have no trouble finding willing participants among college students (who are often broke).

This comic is a continuation of [[937: TornadoGuard]] which stated "the problem with star ratings". Apparently, every possible comment ordering policy has its own problems.

The title text refers to systems like {{w|Reddit|Reddit's}} {{w|conversation threading}} which allow users to vote comments up or down and to sort them by the resulting "karma score" (total up-votes minus total down-votes). The same problem persists to some extent: after a few comments are posted and some votes are cast, the handful of comments having received the highest scores among the first dozen of so will receive far better chances at being seen and voted on than comments posted later, and will solidify their places in a positive {{w|Feedback|feedback}} loop. In this way, a few persistent voices can still dominate the discussion, contrary to the claim in the title text, thus creating irony.

The comic's title refers to a once-common form of online posturing where the first user to see the article will comment "First post" or even just "First". The intent is that everyone else see that they were there first and, therefore, must be somehow better than you. This is referred to in both [[269: TCMP]] and [[1258: First]].

Since this comic's publication several news sites have elected to remove all comments, in part to prevent [https://www.niemanlab.org/2015/09/what-happened-after-7-news-sites-got-rid-of-reader-comments/ a few voices] [https://www.npr.org/sections/publiceditor/2016/08/17/489516952/npr-website-to-get-rid-of-comments?t=1568619071215 dominating the conversation].

==Transcript==
:[Single panel showing a bar graph with two gray vertical bars, a dollar amount above each bar, the vertical axis on the left side with tick marks every $250,000, and the horizontal axis at the bottom with a descriptive label below each bar under the axis. The first bar is much taller than the second.]

:[First bar:]
:Amount: $1,500,000
:Label: Cost to buy an ad on every story on a major news site every day until the election

:[Second bar:]
:Amount: $200,000
:Label: Cost to pay five college students $20/hour to camp the site 24/7 and post the first few comments the moment a story goes up, giving you the last word in every article and creating an impression of peer consensus

:[Caption below the panel:]
:The problem with posting comments in the order they're submitted

{{comic discussion}}

[[Category:Bar charts]]
[[Category:Politics]]

696: Strip Games

2022-05-11T18:14:31Z

BetaOS: Undo revision 267120 by 👖🔥 (talk)

{{comic
| number = 696
| date = February 1, 2010
| title = Strip Games
| image = strip_games.png
| titletext = HOW ABOUT A NICE GAME OF STRIP GLOBAL THERMONUCLEAR WAR?
}}
==Explanation==
The frequency of strip versions of various games is measured by means of Google search results. Strip versions of popular games are a common activity at parties, especially when alcohol is involved. The obligation to remove pieces of clothing is supposed to add an extra zest to the game. A very widespread variant is {{w|Strip Poker}}, followed by strip versions of regular party games like {{w|Truth or Dare}} or {{w|Spin the Bottle}}.

However, the comic also suggests playing other games in a way that involves stripping. In reality, playing such games as "Strip {{w|Tennis}}" or "Strip {{w|Agricola (board game)|Agricola}}" is rather unusual. The Chris Van Allsburg picture book ''{{w|Jumanji (picture book)| Jumanji}}'' and the Robin Williams movie adaptation
''{{w|Jumanji}}'' are about a magical board game that manifests dangerous creatures and traps from the jungle and lost civilization therein; a theoretical Strip Jumanji would probably not remain very titillating during the chaos (evidently, therefore, "strip Jumanji" refers to [https://jumanji.fandom.com/wiki/Jumanji_(Milton_Bradley_Board_Game) the real-life board game based on the movie]).

The last column features games of which strip versions are (according to Google) nonexistent. While the other columns named sports or board games where a strip variant would be at least conceivable, the last one includes the {{w|zero-player game|zero-player}} {{w|Conway's Game of Life|Game of Life}} and the {{w|Prisoner's_dilemma#The_iterated_prisoner's_dilemma|Iterated Prisoner's Dilemma}}, which is a theoretical example in {{w|game theory}}. It is therefore left to the reader to imagine how a strip version of these pseudo-games would appear.

"Global Thermonuclear War" in the title text is a reference to the film "{{w|WarGames}}", where a young hacker accesses a US military supercomputer and starts a nuclear war simulation, believing it to be only a computer game. The film ends by showing the computer that nuclear war is "a strange game" in which "the only winning move is not to play", and proposes "a nice game of chess".

Strip global thermonuclear war is a patently absurd idea; while it is a common trope for people to engage in one last moment of intimate pleasure before certain doom, foreplay (including strip games of any type) is a time-consuming practice, and time is something you don't have much of considering that the bomb could drop on your place of residence at any moment. Besides all that, the act of betting on which city is going to go up next in a nuclear inferno tends not to be an effective aphrodisiac for most people.{{Citation needed}} But at least you wouldn't be wearing your radioactive clothes!

==Table of games==
{| class="wikitable sortable"
!style="width:15%"|Frequency
!style="width:20%"|Name
!Explanation
|-
|rowspan="5"|Frequent n > 1%
|{{w|Poker}}
|Poker, a card game with rounds of betting, is a game with common "strip" variations, see {{w|strip poker}}.
|-
|{{w|Spin the bottle}}
|Spin the bottle is a kissing party game played at teenage parties comprising boys and girls. As this is a teenage party game, strip varieties seem like they could be popular.
|-
|{{w|Beer pong}}
|Beer pong is a drinking game common at universities and colleges.
|-
|{{w|Never have I ever}}
|Never have I ever is a drinking game where players take turns asking other players about things they "have not done".
|-
|{{w|Truth or Dare}}
|Truth or dare? is a party game, in which players are given the choice between answering a question truthfully, or performing a dare.
|-
|rowspan="5"|Rare 1% >= n > 0.01%
|{{w|Chess}}
|Chess is a board game between two players. Theoretically, clothing could be removed whenever a piece is captured.
|-
|{{w|Blackjack}}
|Blackjack is a gambling card game, played between players and a dealer, in which players do not play against each other.
|-
|{{w|Tennis}}
|Tennis is a racket sport played between 2 players (or between teams of 2, in the case of doubles).
|-
|{{w|Settlers of Catan}}
|Settlers of Catan is a strategy board game, where players compete to "settle" an island by harvesting resources.
|-
|{{w|Pictionary}}
|Pictionary is a party board game, involving drawing and guessing words.
|-
|rowspan="5"|Extremely rare 0.01% >= n > 0
|{{w|Cricket}}
|Cricket is a bat-and-ball sport, commonly played in the UK, India, and other Commonwealth countries. The laws of cricket (and, given that cricket is an outdoor sport, public obscenity laws) disencourage the players removal of clothing, though it is far from unknown for {{w|Sheila Nicholls|spectators}} to do so.
|-
|{{w|Magic: The Gathering}}
|Magic: The Gathering is a trading card game, released in 1993 by Wizards of the Coast.
|-
|{{w|Stickball}}
|Stickball is a game similar to baseball, using a broom handle and a rubber ball.
|-
|{{w|Agricola (board game)|Agricola}}
|Agricola is a farming-inspired strategy board game.
|-
|{{w|Jumanji#Games|Jumanji}}
|''Jumanji'' is a 1995 fantasy film (based on a {{w|Jumanji (picture book)| picture book by Chris Van Allsburg}}) that centers on a supernatural board game. A board game based on the film was released by Milton Bradley.
|-
|rowspan="5"|Nonexistent n = 0
|{{w|Poohsticks}}
|A children's sport mentioned in the {{w|Winnie-the-Pooh|Winnie-the-Pooh books}} played by dropping sticks into a river and watching them reappear on the other side of a bridge. Despite the kid-friendly origins, and unlike the other games below it, a "strip" version of Poohsticks is actually viable.
|-
|[[wikia:w:c:starwars:Podracing|Podracing]]
|Podracing appears in the {{w|Star Wars}} films as a racing competition held with hovering vehicles. How a "strip" version would work between two racers is unclear, but a determined set of spectators "wagering" their clothes on the races could probably hammer out a system.
|-
|{{w|Prisoner's_dilemma#The_iterated_prisoner's_dilemma|Iterated Prisoner's Dilemma}}
|The prisoner's dilemma is a "game" that is analyzed in game theory, showing why rational individuals may not cooperate, even if it is in their best interest to do so. This does not seem like a "playable" game that could involve removing clothing.
|-
|{{w|Chess by mail}}
|Could conceivably work if the players include increasingly-nude photographs of themselves in their correspondences. The problem is, a game by e-mail can take days to finish, and a game by snail-mail can take upwards of ''several months''. The titillation factor is far too spread out to satisfy the desires of anyone who would elect to play a game of strip chess in the first place. It could be an interesting idea for a long-distance relationship, however.
|-
|{{w|Conway's Game of Life}}
|Conway's Game of Life is a {{w|cellular automaton}} devised by British mathematician John Horton Conway in 1970. It is not a "game" in the traditional sense, so "stripping" would also be very difficult, if not impossible.
|}

==Transcript==
:Frequency of Strip Versions of Various Games

:n = google hits for "strip <game name>" / google hits for "<game name>"
:(at the time of this writing)

:Frequent
:(n > 1%)
:-Poker
:-Spin the Bottle
:-Beer Pong
:-Never Have I Ever
:-Truth or Dare

:Rare
:(1% >= n > 0.01%)
:-Chess
:-Blackjack
:-Tennis
:-Settlers of Catan
:-Pictionary

:Extremely Rare
:(0.01% >= n > 0)
:-Cricket
:-Magic: the Gathering
:-Stickball
:-Agricola
:-Jumanji

:Nonexistent
:(n = 0)
:-Poohsticks
:-Podracing
:-Iterated Prisoner's Dilemma
:-Chess by Mail
:-Conway's Game of Life

{{comic discussion}}

[[Category:Charts]]
[[Category:Sport]]
[[Category:Chess]]
[[Category:Nuclear weapons]]
[[Category:Board games]]

2207: Math Work

2022-05-11T18:05:49Z

BetaOS: Undo revision 267124 by 👖🔥 (talk)

{{comic
| number = 2207
| date = September 25, 2019
| title = Math Work
| image = math_work.png
| titletext = I could type this into a solver, which MIGHT help, but would also mean I have to get a lot of parentheses right...
}}

==Explanation==
[[White Hat]] is observing a {{w|physicist}}, [[Cueball]], who is staring at some equations and diagrams on a {{w|chalkboard}} (unreadable in the comic). White Hat is neither a physicist nor a {{w|mathematician}}, but he seems to glorify those professions. He wishes he understood the mathematics in Cueball's work and "the beauty on display here." People who profess a love for mathematics often cite the beauty they see in pure math, how things work out so perfectly, as the reason they love math.

The joke here is that Cueball as a physicist is doing something instead quite simple and relatable: Avoiding hard work. Solving many kinds of constraints for two unknowns isn't necessarily difficult, but can be depending on the details. Cueball clearly thinks a solution is possible but would rather find an easier route. The same could be said about the field of mathematics in general: A proof is beautiful to a mathematician when it provides {{w|aesthetic}} pleasure, usually associated with being easy to understand. A proof is elegant when it is both easy to understand and correct, and mathematical solutions are profound when useful.

The title text continues Cueball's thought process, with the possibility of using an automatic equation solver to find the unknowns. Equation solvers are not often considered beautiful ways to address purely mathematical problems, even if they are often the most efficient and in that sense elegant solutions to applied problems in engineering. Using a formal solver with symbolic, numeric, or both methods requires making sure that the constraints (e.g. equations) are entered correctly, with parentheses balanced in their correct locations for the solution to succeed. This might be a further joke about Cueball's laziness, suggesting that he doesn't even have the energy to check whether his parentheses are placed correctly. At the same time it might show how far away he is from finding the real solution: Any missing, misplaced or spurious parenthesis will most likely immediately invalidate the whole equation system.

==Transcript==
:[White Hat is watching Cueball from a couple of meters away. Cueball is contemplating the formulas and diagrams that fills the blackboard he stands in front of. Cueball holds a chalk in his hand. None of the content on the blackboard is readable, but there is a diagram in the shape of a circle and a another pie shaped diagram. Both are thinking with large thought bubbles above their heads, with small bubbles connecting them and the larger bubble.]
:White Hat (thinking): Amazing watching a physicist at work, exploring universes in a symphony of numbers.
:White Hat (thinking): If only I had studied math, I could appreciate the beauty on display here.

:Cueball (thinking): Oh no. This has '''''two''''' unknowns. That's gonna be really hard.
:Cueball (thinking): Ughhhhhhh.
:Cueball (thinking): '''''Think.''''' There's gotta be a way to avoid doing all that work...

{{comic discussion}}

[[Category:Comics featuring White Hat]]
[[Category:Comics featuring Cueball]]
[[Category:Physics]]
[[Category:Math]]

1121: Identity

2022-05-11T18:05:21Z

BetaOS: Undo revision 267123 by 👖🔥 (talk)

{{comic
| number = 1121
| date = October 15, 2012
| title = Identity
| image = identity.png
| titletext = Not sure why I just taught everyone to flawlessly impersonate me to pretty much anyone I know. Just remember to constantly bring up how cool it is that birds are dinosaurs and you'll be set.
}}

==Explanation==
[[Cueball]] lost the server password and is asking [[Megan]] what it is. Megan correctly comments that she can't be sure through text-based messages that it's really Cueball asking for the password; it could be someone impersonating him attempting to {{w|Social engineering (security)|socially engineer}} access to the server. Cueball answers by starting to develop a cryptographic protocol they can use for proof of identity, probably something like {{w|Off-the-Record Messaging|OTR Messaging}} as implemented in many {{w|XMPP}} chat clients or {{w|Fiat-shamir protocol|Feige–Fiat–Shamir identification scheme}}. In reality, it would already be too late for that — they should have prepared something beforehand. Before he even finishes, Megan answers "It's you", meaning that no one else is so geeky that they would answer like that. Cueball, dismayed at the fact that his geekery has become a defining characteristic of his and also at a lost opportunity to devise his protocol, shouts [texts?] "NO!".

In the title text, [[Randall]] suggests that this is, in fact, his own personality, and that anyone reading the comic can now impersonate him. For a bonus, he notes his own fascination with the fact that [[1211: Birds and Dinosaurs|birds are just modern dinosaurs]], which one could use to impersonate him as well.

==Transcript==
:Cueball: Hey, I lost the server password. What is it, again?

:Megan: It's— ...Wait. How do I know it's really you?

:Cueball: Ooh, good question! I bet we can construct a cool proof-of-identity protocol. I'll start by picking two random—
:Megan: Oh good; it's you. Here's the password...
:Cueball: ''NO!''

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Psychology]]
[[Category:Internet]]

2484: H-alpha

2022-05-11T18:03:53Z

BetaOS: Undo revision 267125 by 👖🔥 (talk)

{{comic
| number = 2484
| date = July 2, 2021
| title = H-alpha
| image = h_alpha.png
| titletext = "All the companies whose blimps I shot fireworks at are mad, but MetLife is especially miffed because I dressed up as the Red Baron."
}}

==Explanation==
[[Black Hat]] has acquired an {{w|H-alpha}} filter. This is a special kind of optical filter used for scientific observations of the Sun's {{w|chromosphere}}. It is different from an ordinary solar filter, which is used to protect one's eyes or camera, as looking at the Sun bare-eyed will do damage to one's eyes. A camera using an ordinary (not H-alpha) solar filter was seen in [[1828: ISS Solar Transit]], and the consequences of not using such a filter were explored in [[2227: Transit of Mercury]].

Black Hat points out that the filter can also be used to look at {{w|nebula}}e, but doesn't see much further use for it; since the filter only transmits a very narrow bandwidth of light, one generated by hot hydrogen, it is not useful for looking at much else. This gives him an idea, and he leaves.

WARNING!!! A deep sky nebula H-alpha filter has a wider bandwidth than a solar H-alpha filter and WILL hurt the eyes if used to observe the sun!

Upon returning, his hat looks damaged. He casually shares with Cueball three seemingly unrelated observations which suggest what he was up to in the meantime: that most modern {{w|blimps}} use helium to keep them aloft, that their household is out of fireworks, and that an advertising company (or several, going by the title text) is upset. Early in the 20th century, most {{w|airships}} such as blimps and {{w|zeppelins}} used hydrogen as the lifting gas. There were several incidents in which this gas ignited while the ships were in flight, resulting in spectacular and catastrophic fireballs, most famously the {{w|Hindenburg disaster|''Hindenburg'' disaster}}. Taken together, the implication is that Black Hat tried to set someone's advertising blimp alight using fireworks; so he could use his H-alpha filter to look at the burning hydrogen.

In modern times, one of the most well-known uses of airships is blimps for advertising, as they are an unusual and hence attention-getting sight in the sky, offer a large surface area that can be used to show a slogan or logo, and can stay aloft for a long time at comparatively little cost. Modern blimps almost exclusively use helium as a lifting gas. While helium is significantly more expensive than hydrogen (and a non-renewable resource), it has similar weight and therefore similar lifting power to hydrogen, but is not flammable. (In fact, as a noble gas, helium is totally non-reactive under normal conditions). Any attempt to cause a hydrogen fireball would, therefore, be doomed to failure. Nonetheless, if Black Hat managed to set off sufficiently powerful fireworks near the blimp, it could potentially damage the skin, risking a loss of helium and possibly putting people in danger, which is likely why the advertising company is "real mad". The joke is that Black Hat would do something as destructive as attempting to destroy a blimp in flight, potentially killing people aboard or on the ground, merely to have the opportunity to use his H-alpha filter.

Cueball "responds" by holding whatever he's reading closer to his face, apparently hoping to avoid further conversation (or consequences).

The title text references the insurance company MetLife, which until 2016 used the cartoon character {{w|Snoopy}} as an advertising mascot. In the ''{{w|Peanuts}}'' comics, Snoopy would frequently imagine himself as a fighter pilot in {{w|World War I}} in an aerial battle with the {{w|Red Baron}}, a battle he would frequently lose. The detail that Black Hat "dressed up as the Red Baron" might help explain another point: advertising blimps typically fly higher than the effective range of most fireworks. It would be entirely consistent with Black Hat's history to modify the stolen {{w|triplane}} mentioned in [[496: Secretary: Part 3]] to allow him to launch fireworks from the air, in mockery of an old-fashioned dogfight.

This comic was published shortly before {{w|Independence Day (United States)|Independence Day}} 2021, a US holiday that is often commemorated with fireworks. This may explain why Black Hat and Cueball originally had some fireworks around.

==Transcript==
:[In a slim panel Black Hat is seen holding a small black device up in his left hand.]
:Black Hat: I got an H-Alpha filter for looking at the sun.

:[In a broad frame-less panel Black Hat, holding the device down in his left hand while standing behind Cueball who is sitting in an armchair reading on his tablet.]
:Black Hat: It also works for nebulae. But that's about it. There just aren't that many hot blobs of hydrogen to look at, I guess.

:[Back to a slim panel, Black Hat is seen holding his left hand to his chin, while he holds the device down in his right hand.]
:Black Hat: ...Unless...

:[Another two slim panels follows. In the first Black Hat turns around and leaves, his head already partly outside the panel already, and he no longer holds the device in his hands. And then follows an empty beat panel.]

:[In a broad panel Black Hat re-enters with the device held down in his hand. He is walking towards Cueball in his armchair. His black hat is somewhat out of shape. Cueball is still reading but is now hunched further forward and he has lifted his tablet so it is very close to his face.]
:Black Hat: Huh, did you know blimps all use helium now? You learn something new every day! By the way, we're out of fireworks.
:Black Hat: And some advertising company is '''''real''''' mad.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Black Hat]]
[[Category:Airships]]
[[Category:Astronomy]]

2393: Presidential Middle Names

2022-05-11T18:03:35Z

BetaOS: Undo revision 267126 by 👖🔥 (talk)

{{comic
| number = 2393
| date = December 2, 2020
| title = Presidential Middle Names
| image = presidential_middle_names.png
| titletext = The bottom of the list remains unchanged. Poor Rutherford Birchard Hayes.
}}

==Explanation==
A list of what Randall perceives will be the prettiest presidential {{w|middle names}} after the inauguration on January 20, 2021. {{w|Joe Biden|Joe Robinette Biden}} (46th president-elect) will take the second slot bumping previous second-place holder {{w|Franklin D. Roosevelt|Franklin Delano Roosevelt}}, the 32nd president, back to third. {{w|Warren G. Harding|Warren Gamaliel Harding}}, the 29th president, remains in first. Robinette is Biden's [https://nymag.com/intelligencer/2008/08/joe_bidens_middle_name_is_robi.html grandmother's maiden name].

The title text announces that {{w|Rutherford B. Hayes|Rutherford Birchard Hayes}}, the 19th president, remains at or near the bottom.

Overall, the ranking would not include every president, as many early presidents, such as {{w|George Washington}} and {{w|John Adams}}, lacked middle names. Some presidents were also more commonly known by their middle names as opposed to their first names, particularly John {{w|Calvin Coolidge}}, Stephen {{w|Grover Cleveland}}, Hiram {{w|Ulysses Grant}}, and Thomas {{w|Woodrow Wilson}}. In the case of Grant, the Senator who enrolled him at West Point messed up his full name as Ulysses Simpson Grant, hence he is widely known as ''Ulysses S. Grant'' with the spurious middle "S". Also, {{w|Harry S Truman}}'s middle name was just the letter S and was not an initial of a name; Truman's parents could not agree on which of his grandfathers' names to give him, but luckily they both started with the letter. One president has even changed their entire name: {{w|Gerald Ford}} was born Leslie Lynch King, Jr., officially changing his name in 1935.
There is no evidence in the comic for how Randall’s list would deal with these cases.

The humor is based on the sheer oddity of ranking people by the perceived prettiness of their obscure middle names.

== Trivia ==

{{w|Raphael Warnock|Raphael Gamaliel Warnock}} became a U.S. senator in January 2021, a hundred years and a week after former president Warren Gamaliel Harding left the Senate. Randall’s favourite presidential middle name is thus once again represented in government.

==List of Presidents with middle names==
(updated for 2021, as the comic)
{| class="wikitable"
|+ (Ordered by middle name)
! President
! Presidential order
|-
|James ABRAM Garfield
|20
|-
|Chester ALAN Arthur
|21
|-
|Lyndon BAINES Johnson
|36
|-
|Rutherford BIRCHARD Hayes
|19
|-
|John CALVIN Coolidge
|30
|-
|Herbert CLARK Hoover
|31
|-
|Dwight DAVID Eisenhower
|34
|-
|Franklin DELANO Roosevelt
|32
|-
|James ("Jimmy") EARL Carter
|39
|-
|John ("Jack") FITZGERALD Kennedy
|35
|-
|Warren GAMALIEL Harding
|29
|-
|Stephen GROVER Cleveland
|22, 24
|-
|William HENRY Harrison
|9
|-
|George HERBERT WALKER Bush
|41
|-
|William HOWARD Taft
|27
|-
|Barack HUSSEIN Obama
|44
|-
|William JEFFERSON Clinton
|42
|-
|Donald JOHN Trump
|45
|-
|James KNOX Polk
|11
|-
|Richard MILHOUS Nixon
|37
|-
|John QUINCY Adams
|6
|-
|Joseph ("Joe") ROBINETTE Biden
|46
|-
|Gerald RUDOLPH Ford
|38
|-
|Harry S. Truman
|33
|-
|Hiram ULYSSES Grant (Ulysses SIMPSON Grant during his presidency)
|18
|-
|George WALKER Bush
|43
|-
|Ronald WILSON Reagan
|40
|-
|Thomas WOODROW Wilson
|28
|}

The Presidents without middle names — almost all of those before Grant, and a few a bit later — were George Washington, John Adams, {{w|Thomas Jefferson}}, {{w|James Madison}}, {{w|James Monroe}}, {{w|Andrew Jackson}}, {{w|Martin Van Buren}}, {{w|John Tyler}}, {{w|Zachary Taylor}}, {{w|Millard Fillmore}}, {{w|Franklin Pierce}}, {{w|James Buchanan}}, {{w|Abraham Lincoln}}, {{w|Andrew Johnson}}, {{w|Benjamin Harrison}}, {{w|William McKinley}}, and {{w|Theodore Roosevelt}}.

==Transcript==
:<big>Prettiest</big>
:Presidential Middle Names Official Rankings
:(Updated for 2021)

# Gamaliel (Warren Harding)
#Robinette (Joe Biden) '''(NEW!)'''
#Delano (Franklin Roosevelt) 

{{comic discussion}}

[[Category:Comics with color]]
[[Category:Comics featuring politicians]]
[[Category:Rankings]]

Countdown in header text

2022-05-11T18:03:15Z

BetaOS: Undo revision 267132 by 👖🔥 (talk)

{{comic
| date = January 10, 2022
| title = Countdown in header text
| image = Countdown_in_header_text_full_animation.gif
| before = The [https://www.explainxkcd.com/wiki/images/2/21/Countdown_in_header_text_clock_migration.gif countdown] lasted 21 days and only the last image appeared in the header text after the end on 2022-01-31. It will also not be a permanent part of the header, but be removed once the xkcd Header text is changed again.
| ldomain = www
| lappend =
| extra = yes
}}
{{TOC}}

==Explanation==
*On January 10th 2022, [[Randall]] added a countdown in the top right corner of the [[xkcd Header text]] on {{xkcd}}.
**It turned out that it was a countdown to the reveal of Randall's new book [https://xkcd.com/what-if-2/ what if? 2] which was announced at the end of the countdown.
***The full title: What If? 2: Additional Serious Scientific Answers to Absurd Hypothetical Questions
***The Hardcover version is released September 13, 2022.
***A follow up on his first book based on his blog [[what if?]]
*The comic [[2575: What If? 2]] was released moments after the counter reached zero.
**A comic entirely devoted to promote the book.
***And then the [[xkcd_Header_text#2022-01-31_-_What_if.3F_2|header changed]] to promote the book directly.
*The counter began while the comic [[2565: Latency]] was up.
**First the xkcd Header text was [[xkcd_Header_text#2022-01-08_-_Back_to_standard_text|changed back]] to the [[xkcd_Header_text#Header_text|standard text]] for the first time in almost three years:
***xkcd updates every Monday, Wednesday, and Friday.
**But already while this Friday-comic was still up on the following Monday the [[xkcd_Header_text#2022-01-10_-_Standard_text_with_countdown|countdown]] was added.
***This was thus up when the Monday comic [[2566: Decorative Constants]] was released, drawing more people to the xkcd page.
*The first [[#Archived Versions|archived version]] from [https://web.archive.org/web/20220110183238/https://xkcd.com/ 2022-01-10] read 20d 20h 27m.
**It looks like it started on [https://munvoseli.github.io/xkcd-countdown/ 01-10 17:00 UTC].
***At that time it would have read 20d 21h 59 min. Just two hours and 1 minute short of 3 weeks.
*The countdown reached zero on Monday 2022-01-31 at 15:00 (3:00 PM) {{w|UTC}}, or 10:00 AM in Boston, Randall's home town.
**Seconds was added for the last 10 minutes making the countdown end exactly at 15:00 UTC
***When the seconds counter replaced the day counter at that time the box started [https://www.explainxkcd.com/wiki/images/6/64/Countdown_in_header_text_last_minute_wiggling.gif jiggling around].
*The second day of countdown on [https://web.archive.org/web/20220111153818/https://xkcd.com/ 2022-01-11] a diagonal black bar appeared in the lower left-hand corner of the countdown box and started to move further into the image on following changes to the [[#Images|image]].
**This development called for the creation of this dedicated [[Countdown in header text]] page.
**The line had already moved further into the image at this time, but the latest version will never be available in the web archive.
***This development is reminiscent of the huge comic [[1190: Time]].
***The images was uploaded [https://munvoseli.github.io/xkcd-countdown/ here] on munvoseli's page where comparison of two images and an animation can be seen.
*During the three weeks this page was used to collect [[Countdown_in_header_text#Theories|theories]] of both the image and the countdown.
**Since these are now all either proved wrong or wright, they are only left here below to document how much people though about it.
***They have been collapsed, to not take up too much space, but can be accessed by pressing the link.
*Randall has previously made a comic simply called [[1159: Countdown]].
**However, in that the roles are reversed.
***There we know that the countdown is for (Super Volcano) but not if it will happen soon or very much later.
***Here we know when, and it is rather soon, but not what.

===Blow up by Amazon===
*The day before the countdown reached zero a user found out that:
**'''Amazon revealed the news a day too early.'''
***The book could be found on Amazon on [https://web.archive.org/web/20220130094958/https://www.amazon.com/dp/0525537112 2022-01-30] with the book cover clearly showing the part of the image shown in the box. And thus the surprise was lost on those using this page.
***Here is the page with [https://www.amazon.com/dp/0525537112 what if? 2], the above link shows that the page existed the day before the count down ended.
**A shame for Randall and his fans.
***Although some of his fans had invested a lot of time in trying to solve the puzzle before the countdown ended and were excited by the discovery.

==Images==
*The 136 frames that made up the countdown have been put on this separate page: [[Countdown in header text/images]].
**The images was mainly downloaded [https://munvoseli.github.io/xkcd-countdown/ here] on munvoseli's page.
***On that page it is possible to compare two images, chosen between those released, on that page!
***From 2022-01-14 it has also been possible to see an animation.
****But after the last frame was released a user on this page has kindly provided a gif animation we could add to the top of the page.
**See more details at the top of the image page.
*Other images that also show the clock, compare two images, or show how the page actually looks have been moved to this other page: [[Countdown in header text/other images]].
*After the first thirteen different frames, it was noted that not only did the first three empty frames looks the same (because the diagonal bar was not in the frame yet), but the seventh and the eighth frame where also the same, even though the bar had already begun moving across the frame from the fourth. This could have been on purpose but could also be a mistake.
**However, the images that look the same all have individual addresses on the xkcd server. See more here [[Countdown in header text/images]]
***Later for instance frames 91 and 92 also seem to be exactly the same. Also frame 92 did not upload as part of the roughly four hour schedule, but between two frames that are part of the regular schedule.
***And the second to last frame 135 was also the same as 134, even though they had different names all 136 frames.

===Extra pages for images===
*Two pages has been made to collect images of the countdown:
**One for all the 136 frames:
***[[Countdown in header text/images]]
**And one for other images showing also the countdown clock, and comparison between images etc.
***[[Countdown in header text/other images]]

==Ongoing image description==
*The counter [https://www.explainxkcd.com/wiki/images/2/21/Countdown_in_header_text_clock_migration.gif moved upwards] during most of the countdown, to cover less of the revealed image. See more [[Countdown_in_header_text/other_images#Changing_counter_position|here]]
*Here is a description made as the image progressed, and no one knew what it would turn in to, until the very last few days.
** Frames 1-12: A diagonal line.
** Frame 13: A curve seems to begin at the top left of the line.
** Frame 18: The curve connects the diagonal line with a horizontal line.
** Frame 27-28: A new line appears in the bottom left corner.
** Frame 40-42: The new line turns out to be connected to the horizontal line, forming a corner which is not attached to any other line.
** Frame 49: The "camera movement" direction changes, while the object is still moving upward it stopped moving towards the left side, moving towards the right instead.
** Frame 54: A slight upward curve seems to appear in the right line, the left line seems to have a small bend downwards, though that could at that point just be a straight line that Randall drew without a ruler.
** Frame 60-62: A new line appears in the bottom right corner, it turns out to be a continuation of the first original line which curves upward and has a positive slope at that point of the picture, between about 2 o'clock and 3 o'clock. The downward bend of the left line continues on straight in the same direction, it was probably an intentional bend and not an irregularity in drawing a straight line by hand.
** Frame 63: In the minimum of the right curved line a new line starts appearing, way thinner than the others (which were up to this point all rather part of one line) and going slightly downwards and very much to the left, at an angle somewhere between 8 o'clock and 9 o'clock.
** Frame 67: A possible feature becomes visible at the bottom edge of the image that might resolve the exact nature of the (currently presumed) aircraft, e.g. which particular aerodynamic surface we have been seeing and thus from which particular orientation we are viewing it.
** Frame 68-72 makes it clear this must be an aircraft by showing windows and a door and clearly the tail fin. As late as frame 69 some people argued that the tail fin could have been a wing.
** Frame 73-83 brings a horizontal stabilizer into view.
** Frame 87-89: A new curved line appears on the underside of the (presumed) aircraft, so there either is something behind it or it might not be an aircraft.
** Frame 96-99: An arc is coming into view in the upper right corner, likely the top edge of a cloud.
*** Turned out not to be a cloud.
** Frame 101-106 seems to be some kind of radar on top of the plane, like the one on {{w|Boeing E-3 Sentry}}. Or alternatively this plane is hanging beneath another plane. Not looking at all like {{w|Spaceshiptwo}}, but something similar, which could make this plane a spaceplane?
** Frame 106-114 a new element of the image appears on the right side, it could be the end of a wing. The arch no longer looks like a radar. Could be the tail of a Dinosaur or the cape of someone riding the airplane...
*** a cape is unlikely as it would probably be drawn to flap in the wind. The other element does appear to be a wingtip
*** Could it be [[Cory Doctorow]] flying with the airplane, but much closer to the 'camera'?
** Frame 115-121 makes it clear that the newest addition at the bottom right is the wing tip of the plane. The black curve above the plane still mostly looks like a tail as on a dinosaur or dragon. Could also be a tentacle. Either from an [https://www.explainxkcd.com/wiki/images/b/b5/1608_1038x1094y_Giant_octopus_in_Destroyer.pngv octopus] or from and alien like in [[2572: Alien Observers]]. Of course it could also be a cape, but seems too thick at the end...
** Frame 124 shows something beneath the plane, but already in 125, that makes one of the largest jumps between pictures so far, this is clearly one of the wheels on the landing gear. Also the hind leg of the Dinosaur whose tail has been visible long time is coming in to view. Not certain yet it is a dino (probably a velociraptor), but the leg makes it the number one candidate.
** Frames 126-127 almost confirm the dinosaur theory.
*** And at this time someone spotted the new What if? 2 book on Amazon and it is the Tyrannosaur from the [[what if?]] blog that is now eating a plane rather than being lowered into the Sarlac.
** Frame 134 reveals the last part of the plane, so now the entire plane and T-rex is visible. This was about 6 hours before the countdown ended.
** Frame 135 is identical with 134!
** About ten minutes before the countdown ended the image started to wiggle and as predicted seconds also came in, leaving out the day part of the counter.
** Frame 136 came just after the countdown ended, turning the background red, as it is on the front cover of the book adding the title what if? 2 in white text beneath the plane, which as now been moved to the top of the image since the overlaid count down is now gone.

==Theories==
*'''Amazon revealed the news a day too early!''' - it is Randall's new book [https://www.amazon.com/dp/0525537112 what if? 2] that will be announced at the end of the countdown.
**So it is a book announcement, and the picture is Tyrannosaur eating a plane while in flight.
*Here below are the different theories for what the countdown was for and what the picture was going to reveal from before it was clear what it was.

===The picture===
*Theories about the picture:
**One of the very early theories got it right:
***The second line makes it look somewhat like the tail fin of an aircraft.
'''Click to expand for more theories:'''
<div class="mw-collapsible mw-collapsed leftAlign" style="width:100%">
**From 2022-01-21 it became certain that it was a plane! Passenger plane. Door and windows are visible.
***From 2022-01-22 it became clear that it was the rear end, so it was a tailfin that came into the panel to begin with. Up til the day before it was still a bit uncertain if it could have been a wing.
*** from 2022-01-24 a bottom line has appeared which doesn't fit well with a 'standard' airliner. perhaps the image is deliberately misleading (eg will transform into something else)
*** From 2022-01-26 something looking like a radar like the one on a {{w|Boeing E-3 Sentry}} began emerging in the top right corner.
*** From 2022-01-28 it looks like an elephant's trunk to me.
**What will this lead up to - theories about this.
***It could be an airplane with a banner like in [[1355: Airplane Message]].
****That would very soon be clear as the bottom part of the rear end seems to be coming into view during 2022-01-24, if the direction does not change again.
*****This is now ruled out, since the plane is clearly not towing a banner.
***It could end up landing in a city, perhaps with a skyline pinpointing where Randall will be or move.
****However, unlikely to manage this in real life as the count down ends.
****Also, very unlikely (1 in 60, or even 1 in 3600) that such a landing would occur exactly on the hour.
*****But it could also just be the time when he announces he has moved...
***Maybe Cueball will make a parachute jump, and Cueball could represent a real life Randall, as this could in principle be timed very accurately.
****This is something you would schedule a month or more ahead, want to tell people about in advance, want to make a big deal about on your website, is not quite as bizarre as zero-G and probably more fun {{citation needed}}, could be done with an adventurous wife, explains why it’s the tail of the plane in the image, and (assuming no mechanical, medical, or meteorological problems, a safe assumption), might go something like “on my mark, it’ll be 9:59:56 A.M. in Boston... mark. 3, 2, 1, JUMP!” Maybe it’ll be just Cueball/Randall, but could more likely include Megan representing his wife.
****However, it could very easily be that the weather in January could foil the attempt, or at least the timing.
****The plane appears to be a commercial jetliner, though, rather than the small prop planes used for parachute jumps. Unless, of course, Randall is revealing his real identity has been Wesley Snipes all along
****The plane appears to have its landing gear down, which rules out a parachute jump.
*****At frame 124 it is a bit early to say that the dot beneath the plane is the landing gear, but from 125 it became clear. Also seems like the leg of the dino on the plane has come into vies. The below was written before number 125 came out.
*****Landing gear implies that the aircraft is either taking off or landing, and judging by the plane's nose-up attitude, most likely taking off. Therefore, assuming that the plane is in fact shown seconds after rotation (possibly still on the ground), there is a possibility that the black object could be an airport fixture, perhaps a wind sock in the foreground?
******Well, forget I said that. It's a dinosaur apparently.
*** Perhaps the new item on top of the plane is the tail of a dinosaur? perhaps like the one on the cover of "what if..." book. perhaps it's a new book?
*** There are two flights originating in Boston departing at 09:59 on 1/31/2022: Spirit NK433 to Orlando Florida and Delta DL5696 to Washington D.C.
***Frame 101-106 seems to be some kind of radar on top of the plane, like the one on Boeing E-3 Sentry. Or alternatively this plane is hanging beneath another plane. Not looking at all like Spaceshiptwo, but something similar, which could make this plane a spaceplane?
**** Predicting dinosaur
***** Cross-referencing it with the cover of ''What If?'', this does seem like a xkcd-style dinosaur tail. It could represent Randall, or xkcd as a whole, going somewhere. Or it could just be the cover of a new book.
******Yep, it's a dinosaur.
**** Revising my prior theory: It now looks very much like another aircraft (similar to theory below) but not part of the main aircraft, I think. I would guess it is either an improbable mid-air encounter (like a passenger jet and an ultra-lite) or an equally improbable "launch" of something from the jet (again like an ultra-lite or some other less common or even fictional craft.)
**** Maybe the torch of the Statue of Liberty?
**** The black wave looks like a superhero cape
**** the white element overlapping the fuselage could be the start of the wing-tip these fold up at the ends of many modern aircraft, could mean aircraft is banking left.
***Frame 107-121 the right wing of the plane moves into view. It is still unclear if the black curve is a tail, a cape or a tentacle. But seems like it cannot be another aircraft.
***Has now been resolved.
**Maybe it will be the entire book, or at least include the text 'what if? 2', and that more rapid zoom-out will happen during the last minutes.
***Since the entire plane is revealed with at least two more possible updates, even in 4 hours schedule, something new may certainly be expected to occur before the end of the countdown. This written after frame 134 that revealed the front of the plane.
*The XKCD store currently reports "will be opening soon" [https://store.xkcd.com/] perhaps any announcement will be simultaneous with a store re-launch.

====Early theories====
*Many early theories were generated before the picture was decisively revealed to be a plane...
*It seems after two days and 12 pictures like either something is moving into the frame or that it is a zoom out from a white area of a large picture. Maybe it is the arm of Cueball that will come into view.
*The second line makes it look somewhat like the tail fin of an aircraft.
**Or the wing of an aircraft (left if looking down at it). Perhaps the plane is towing a banner that will fly through the frame.
***After almost a week this looks like the most promising suggestion so far. Now that the direction of the camera movement has changed, we might get to see the rest of the aircraft soon.
****From picture 63, it more and more seems like it was the tail fin of a plane and now we can see the body.
*****It's almost certainly the tail (and now a bit of the rear fuselage) of an aircraft.
******It could just as easily be the left wing and part of the fuselage (showing windows on the right side of an airliner), with the tail fin out of view to the rear, as being the tail fin from an angle where the left wing is out of view behind the fuselage.
*******judging by the relative size of the (presumed) windows, I think it's more likely to be the left wing than the tail fin.
*******Based on the way planes are drawn in [[1868: Eclipse Flights]]. [[1355: Airplane Message]] and [[1669: Planespotting]], plane wings have a point on their edge and tail fins have a flat side, and (if a line is present) a thick line separates wings from the body, whereas thin lines or no lines separate tail fins, so this is a tail fin.
*******In the bottom left there appears to be the top part of a horizontal stabilizer, implying this is the tail.
********It’s a tail fin, that’s finally clear, but that’s the underside of the stabilizer. Which means this would be the best angle to view Cueball/Randall parachuting out of that door, something that would be predictable to the exact minute (barring all kinds of things that could go wrong).
*******Appears to be a door to the left of the windows
*******It could be an airplane with a banner like in [[1355: Airplane Message]]
***Tail of a space shuttle, perhaps?
****While I think Randall would've also drawn in the signature black part of the rudder, the shape fits perfectly
****Timing is close (though not exact) to the Columbia disaster anniversary (2003-02-01 1359 UTC)
***I'm thinking the tail of a Zeppelin.
****Although those normally have longer tail fins.
*Maybe it is some kind of vehicle rolling into frame, like a car?
*Or the word xkcd? (or xkcd 2?)
*Could have been "Hangman", but it looks like it's zooming in on the diagonal instead of continuing to make a gibbet.
*With the new second line appearing in the corner as of frame 28 it looks like it's definitely zooming out of an image. It looks like it could be someone's arm in a running position.
*I think it could also be two legs of a reclining stick person.
*The lines suggest a shark fin and the movement would suggest it swimming across the frame.
**If it was a shark fin, then the most likely candidates would be the first dorsal fin and the pectoral fin, but both end in points rather than edges like in the pictures of the header puzzle. An aircraft tail fin still seems most likely.
*Maybe it's a two-dimensional shape viewed from a weird angle?
**Like a rectangle viewed from a floating, tilted perspective
**Or the top of the k in xkcd
**Or a boat dock?
*The r/xkcd subreddit produced some early theories :
**Cueball's arm
**The letter D, as in "The End"
**A spider's web, in reference to comic 1688
***With the airplane revelation, this reference turned into a meme in the subreddit, where users tried to justify the presence of an airplane shape inside a bigger-scope spider picture
***More generally, "spider" is now jokingly used nearly each time in place of "airplane" during discussions on the sub
****For example, the final image is generally described as "a dinosaur eating a spider"
***Some joke theories included:
****A giant spider flinging airplanes from the sky, as a new potential "What If?"
****The lines are a web and the apparent windows the eyes of a giant spider
****The airplane is a complex-looking spider leg, and 8 of them form a spider
***Another redditor made the airplane part of a dragon's head
</div>
 

===Countdown===
*Theories about the countdown:
**One of the early theories got it right:
***Randall's next book, either the countdown is counting down to the start of promotion or it is released when the countdown ends.
'''Click to expand for more theories:'''
<div class="mw-collapsible mw-collapsed leftAlign" style="width:100%">
*Several have already been mentioned in the discussion:
**Maybe Randall is going on vacation?
**As of now - 22-Jan-2022 7am PST - the countdown disappeared from some users browser. Temporarily (perhaps to make the image cleaner?) or permanently? The countdown was back up soon after. probably a glitch and maybe not for all places or browsers.
**Randall's next book, either the countdown is counting down to the start of promotion or it is released when the countdown ends.
***Usually Randall has made month long [[:Category:Book promotion|book promotions]] before release. So if it is the release day it is a new way to do it. But he will get a lot of attention. If it is just the start of promoting it, people might get disappointed…
****For instance he began promoting his [[xkcd_Header_text#2015-05-14_-_New_book_Thing_Explainer|new book Thing Explainer]] in the header text. That was in May 2015 and the book was first released [https://blog.xkcd.com/2015/05/13/new-book-thing-explainer/ late November 2015]. Most of this time the header text was promoting the book.
***The day before the announcement a user posted a link in the discussion with a book listing for [https://www.amazon.com/dp/0525537112 what if? 2] on Amazon showing more or less the picture revealed at this time, thus ending the debate as to what the image and the countdown was for.
**{{w|James Webb Space Telescope}} (JWST) going into orbit about L2 {{w|Lagrange point}}.
***Randall has already made several comics about the telescope. The latest [[2564: Sunshield]] was released just five days prior to the countdown was started.
***But the telescope will not reach the point but rather go into a large orbit around it, so a precise timer counting down to it seems a bit farfetched.
***On NASA's page on JWST it seems like it will [https://www.jwst.nasa.gov/content/webbLaunch/deploymentExplorer.html#25 go into orbit] 29.5 days after its [[December 25th Launch]], on Christmas Day, so it should have already started the orbit by the 23rd or 24th of January - 8 days before the countdown.
***Also No based on the image.
**{{w|Lunar New Year}}
***In China it starts on February 1st and a [https://yourcountdown.to/chinese-new-year countdown for China] is 8 hours behind.
****The South Korean time zone is UTC+9, hence 14:59 UTC = 23:59 in South Korea, one minute to Feb 1.
*****But it's weird if Randall that has basically never mentioned this holiday suddenly makes a three week countdown for it, and why choose South Korea when most would think of China in this context…?
**Randall will stop making xkcd (Goodbye in the image).
***Hopefully not.
****Agreed, {{tvtropes|PoisonOakEpilepticTrees|to be avoided}}
***It might be a temporary stop (hiatus).
**[https://nationaldaycalendar.com/backward-day-january-31/ National Backward Day]
***This is not a day mentioned on Wikipedia at the time of release of the countdown, so seems unlikely.
**Maybe it will be an announcement of xkcd 2, a new and improved version for… some reason?
***Seems unlikely…
**{{w|Black History Month}}. The {{w|Greensboro sit-ins}} started on Feb 1 1960. Black History Month also begins on February 1st, also in 2022.
***But this countdown stops early on January 31st so seems unlikely.
***However, before changing the Header recently it was about [[xkcd_Header_text#2020-06-03_-_Black_Lives_Matter|Black Lives Matter]] for more than 1.5 years, first ending on December 20th 2021, less than a month before the countdown began. In between that there was a short Christmas sale reminder until a week into 2022. So it could just be another way of reminding of us the issues faced by black people in the US.
****If this was true, I feel like it would be simpler to just change back to the Black Lives Matter text at the top of the screen. Also, it seems increasingly likely as of Jan. 20th that the image is some kind of plane, which doesn't really have much to do with Black History Month (that I know of?)
**The accompanying header says specifically "xkcd updates Monday, Wednesday, and Friday"--maybe the countdown is to the reveal of a new update schedule?
***Very unlikely. This was the standard header for a long time. It was used when Randall had nothing better to say. But with all his books and the trouble in US with elections and BLM, he has used the header as a platform most of the time many years now. So the standard text is rare. But he did return it for two days before adding the count down, making it seem just like normal.
***A guess is that it returned to this, so the header text did not take any focus away from the countdown.
**[[:Category:Red Spiders|Red spider]] attack?
***Un-Likely
**He will become a father - could be a planned C-section.
***As this is unpredictable, and could go wrong, then this would be a dangerous countdown, people can be very superstitious, even if scientist.
**As it currently looks (after a [[1070: Words for Small Sets|few days]] into the countdown) it may be a trip he is taking by plane.
***Maybe going somewhere people could meet him.
****Book tour?
***Moving a long way from home (down under or the like).
****Maybe he's moving to Japan? Could be a plane, and the time zone would fit, at least.
*****Then the countdown would be until when the plane lands, not to midnight.
******What has time zones to do with this clock? It counts down to the same time all over the world, and will reach zero at the same time no matter what time zone you are in.
******Time zones have to do with where it will be midnight when the countdown reaches zero. If it's a countdown to when January ends (a moment before February begins), then it's until that moment in the time zone where the countdown reaches zero at that time.
******* According to my calculations, the timer will coincide with midnight in the UTC+9 time zone, encompassing both Koreas, Japan, and small parts of Russia and Indonesia.
****If it is a plane, then maybe it will land in a new city Randall moves to when the counter ends, and the skyline will be visible...
**Perhaps it's a start to a new series like [[1190: Time]].
***It is already a series that works like Time, so seems unlikely.
**Zero-G flight, really looks like plane to me.
***Could be time he will first go weightless which could be fairly well known except for bad weather
**A parachute jump by Randall. Could be predicted as well as the zero G.
**How about the [https://www.hitc.com/en-gb/2021/09/09/star-trek-picard-season-2-release-date-plot-cast/ new series of Picard]?
***{{w|Star Trek: Picard (season 2)}} is set to run from March 3 2022, which both Wikipedia (link before) and [https://www.imdb.com/title/tt8806524/episodes?season=2 IMDb] agrees upon so bad to miss by more than a month, and what would the plane in the image have to do with this anyway?
***So No!
** The xkcd world tour!! I wish
** I'm beginning to see another part of the picture entering into view, underneath the arc and above the body of the plane. To me, it looks like it could be a leg of sorts (Early bet: it could be a dinosaur)
**Maybe something to do with aliens? Randall posted two comics about aliens secretly observing earth in a row now, could that be related?
** DB Cooper's jump from an airliner was 50 years ago, but not until november
*** Maybe Randall admits that he was DB Cooper all along?
</div>
 

===count-wimRikmef===
* The identifier of the script contains what is probably an acronym, but for what?
** count / wim (?) / Rik (name) & me f(light)
** Or it's just the output of whatever js minimizer was used.
** R = Randall?
** Randall is travelling to Germany? "Wo ist mein Reisepass? Ich komme mit einem Flug"
** "wi" are the initials for the book that's coming out
*** so what could mRikmef be?
** So the first two letters are what if, maybe the R is for Rex, and the f is flight, not sure about the others?
*** "what if" could be a good shout, the dino on the plane reminds me of the cover of the first "what if", and a raptor attack/snakes on a plane crossover would make for some great what-if analysis
* The "img" tag has a misspelled "heigth" attribute. Probably just a typo?

==Archived Versions==
*Here is a list of the versions that has been saved to the web archive during the countdown.
**The counter in that version is written behind the date of the web archive.
**Note that the counter is active on the archived version counting minutes down from the start. Some of the versions almost changing the minutes just after loading. But it will always count from the time given here:
#[https://web.archive.org/web/20220110183238/https://xkcd.com/ 2022-01-10] 20d 20h 27m
#[https://web.archive.org/web/20220110214138/https://xkcd.com/ 2022-01-10] 20d 17h 18m
#[https://web.archive.org/web/20220111011115/https://xkcd.com/ 2022-01-11] 20d 13h 48m
#[https://web.archive.org/web/20220112005828/https://xkcd.com/ 2022-01-12] 19d 14h 1m
#[https://web.archive.org/web/20220113044552/https://xkcd.com/ 2022-01-13] 18d 10h 14m
#[https://web.archive.org/web/20220114010759/https://xkcd.com/ 2022-01-14] 17d 13h 51m
#[https://web.archive.org/web/20220114195624/https://xkcd.com/ 2022-01-14] 16d 19h 3m
#[https://web.archive.org/web/20220115052737/https://xkcd.com/ 2022-01-15] 16d 9h 32m
#[https://web.archive.org/web/20220116074923/https://xkcd.com/ 2022-01-16] 15d 7h 10m
#[https://web.archive.org/web/20220116225217/https://xkcd.com/ 2022-01-16] 14d 16h 7m
#[https://web.archive.org/web/20220118050255/https://xkcd.com/ 2022-01-18] 13d 9h 57m
#[https://web.archive.org/web/20220118195259/https://xkcd.com/ 2022-01-18] 12d 19h 6m
#[https://web.archive.org/web/20220119213308/https://xkcd.com/ 2022-01-19] 11d 17h 26m
#[https://web.archive.org/web/20220120103559/https://xkcd.com/ 2022-01-20] 11d 4h 23m
#[https://web.archive.org/web/20220120235630/https://xkcd.com/ 2022-01-20] 10d 15h 3m
#[https://web.archive.org/web/20220121023331/https://xkcd.com/ 2022-01-21] 10d 12h 26m
#[https://web.archive.org/web/20220121102349/https://xkcd.com/ 2022-01-21] 10d 4h 36m
#[https://web.archive.org/web/20220122002328/https://xkcd.com/ 2022-01-22] 9d 14h 36m
#[https://web.archive.org/web/20220122034744/https://xkcd.com/ 2022-01-22] 9d 11h 12m
#[https://web.archive.org/web/20220122223018/https://xkcd.com/ 2022-01-22] 8d 16h 29m
#[https://web.archive.org/web/20220123153950/https://xkcd.com/ 2022-01-23] 7d 23h 20m
#[https://web.archive.org/web/20220123231820/https://xkcd.com/ 2022-01-23] 7d 15h 41m
#[https://web.archive.org/web/20220124200931/https://xkcd.com/ 2022-01-24] 6d 18h 50m
#[https://web.archive.org/web/20220125064825/https://xkcd.com/ 2022-01-25] 6d 8h 11m
#[https://web.archive.org/web/20220126002713/https://xkcd.com/ 2022-01-26] 5d 14h 32m
#[https://web.archive.org/web/20220126175842/https://xkcd.com/ 2022-01-26] 4d 21h 1m
#[https://web.archive.org/web/20220127173721/https://xkcd.com/ 2022-01-27] 3d 21h 22m
#[https://web.archive.org/web/20220128225119/https://xkcd.com/ 2022-01-28] 2d 16h 8m
#[https://web.archive.org/web/20220129024550/https://xkcd.com/ 2022-01-29] 2d 12h 14m
#[https://web.archive.org/web/20220129232926/https://xkcd.com/ 2022-01-29] 1d 15h 30m
#[https://web.archive.org/web/20220130190609/https://xkcd.com/ 2022-01-30] 0d 19h 53m
#[https://web.archive.org/web/20220131124817/https://xkcd.com/ 2022-01-31] 0d 2h 11m
#[https://web.archive.org/web/20220201000434/https://xkcd.com/ 2022-02-01] The day after (0d -9h -5m / -1d 14h 55m)

{{comic discussion}}

[[Category:Meta]]

1766: Apple Spectrum

2022-05-11T18:02:53Z

BetaOS: Undo revision 267131 by 👖🔥 (talk)

{{comic
| number = 1766
| date = November 30, 2016
| title = Apple Spectrum
| image = apple_spectrum.png
| titletext = If I were trapped on a desert island, and could have an unlimited supply of any one type of apple, I'd be like, "How did this situation happen?"
}}

==Explanation==

The comic shows a {{w|spectrum}} of different types of apples, with {{w|Red Delicious}} towards the bad end of the spectrum, and {{w|Honeycrisp}} towards the good end of the spectrum. Although most spectra are only one-dimensional, {{w|Granny Smith}} is on some side branch, implying that the taste is so different from the other two that it deserves its own category. (Granny Smith apples have a distinctively tart, or sour, flavor with a subtle sweetness, and is commonly used for cooking, as opposed to the other mentioned varieties that are quite sweet and primarily eaten raw.) [[Randall]] has previously shown his disdain for Red Delicious apples in footnote 1 in [https://books.google.com/books?id=tgZIBAAAQBAJ&lpg=PP1&pg=PA97#v=onepage&q&f=false this what if]; he also ranked green apples as tastier than red apples in [[388: Fuck Grapefruit]]. The labeling of Red Delicious as "bad" compared to apples in general is perhaps unwarrantedly uncharitable; most apple trees produce fruit so bad that it is considered unfit for any purpose but fermentation. On the rare occasions that a tree naturally produces palatable apples, it is grafted onto other trees so that they will produce more of its apples instead of their own--all Granny Smiths are genetically identical. For a long time, though, in the US apples were mainly divided into three sorts. In case of the Red Delicious apples the colour, not the taste was deemed most important to the buyers which (along with the genetic variability of Red Delicious) lead to many Red Delicious apples breeds that looked great, but actually tasted bad leading to a big restructuration of the apple market.

In the title text, Randall observes a common type of hypothetical question designed as a creative way to inquire about a person's preferences: If he were on a desert island with an unlimited access to something they like -- in this case, unlimited supply of any one type of apple -- what would he choose? However, Randall gives an unorthodox and unexpected answer to the typically playful hypothetical by taking it literally and questioning how such a situation would occur. How did he get stuck on the island, and how did he get a literally unlimited supply of apples? In reality, a desert island is unlikely to have an unlimited supply of any food{{Citation needed}}, let alone apples.

==Transcript==
[A mapping, showing types of apples. Each apple is in a bubble]
<div style="text-align: center;">
Bad ⟵ Red Delicious — Regular apples — Honeycrisp ⟶ Good
 |
 Granny Smith
 ↓
 Doing their own thing
</div>

{{comic discussion}}

[[Category:Charts]]

2128: New Robot

2022-05-11T18:02:33Z

BetaOS: Undo revision 267134 by 👖🔥 (talk)

{{comic
| number = 2128
| date = March 25, 2019
| title = New Robot
| image = new_robot.png
| titletext = "Some worry that we'll soon have a surplus of search and rescue robots, compared to the number of actual people in situations requiring search and rescue. That's where our other robot project comes in..."
}}

==Explanation==

The comic is a commentary on how many robots and engineering products are labeled as being for “Search and Rescue” purposes.

Search And Rescue (SAR) involves entering an unknown, possibly hazardous disaster-stricken environment, identifying humans or other items of interest which may be hidden, partly (or completely) buried, or injured, and then figuring out how to safely extract the target and deliver it to safety. These tasks are hard enough for humans and are even more challenging for robots, which generally work better in well-controlled situations. This is why many robot challenges are themed around search-and-rescue; the techniques that are developed for handling such challenging circumstances can be applied to make other robots (such as robotic caretakers, autonomous cars, AI-assisted medicine, and other lucrative applications) more robust.

The comic may be remarking that 'search and rescue' may be used as a cover for developing robots that will actually be tasked to 'search and destroy'. (See: {{w|lethal autonomous weapon}}s.) Although search-and-rescue is a function that militaries perform, a robot that can satisfactorily perform a search-and-rescue task can easily be adapted to more destructive purposes. Randall has previously written about his concerns about human authorities misusing military robots in [[1968: Robot Future]].

The joke is that the group of engineers who built the robot did it just because it would be cool to have a robot that can induce lightning strikes and has a grappling gun like the hook shot from (The Legend Of) Zelda. Realizing that they need to have an actual purpose for the robot the engineer presenting the robot makes up the reason that it could be used for search and rescue operations. The grappling gun can be used to pull people out or supply food to people stuck in a place. In the case that there is a dangerous amount of charge present in the atmosphere lightning can be induced which will protect other objects and people from lightning. Also, the helium sphere can allow the balloon to float in places that are hard to reach. (Another possible interpretation is that the question "What is the robot for?" meant why do the helium sphere and grappling gun need to have a robot — and the answer means that the robot is to rescue those who are hit by either the lighting or the grappling gun.)

The [https://zelda.gamepedia.com/Hookshot Hookshot] is a type of {{w|grappling hook}} that is a recurring piece of equipment in ''{{w|The Legend of Zelda}}'' video game franchise, first appearing in the 1991 game ''{{w|The Legend of Zelda: A Link to the Past}}''. It is a machine consisting of a chain and hook, which can be used by {{w|Link (The Legend of Zelda)|Link}}, the {{w|protagonist}} and {{w|player character}} of ''Zelda''. When used, the chain extends and sends the hook attached to it towards its target. If the hook latches onto certain objects, Link reels himself in towards that object. Link can also use it to pull enemies and objects towards him. Although it is referred to by the traditional 'Hookshot' name, the traditional Hookshot involves a bladed tip that mounts in wood; the grappling gun equipped on the robot is more reminiscent of the later [https://zelda.gamepedia.com/Clawshot Clawshot], which grasps its target on contact.

In theory, the Hookshot-esque function of the robot could be used for anchoring purposes - a useful function for a flying robot in search-and-rescue situations. If it is using a Clawshot design, it could also conceivably seize the parties in need of rescue. However, merely by comparing the grappling device to the Hookshot, it is clear that its attachment was specifically designed in an effort to replicate the game's tool.

The title text ominously suggests that since there are more rescue robots than required for the number of people needing rescue, ''another'' robot project will be used to place people in need of rescue, or destroy search-and-rescue robots. (Even more ominously, it is possible that this may be the project that creates a need for rescue, as the fires caused by the lightning strikes could be the disaster from which rescue is needed.)

==Transcript==
:[Ponytail is standing on a raised platform with a robot behind her, talking to someone off-screen. The spherical floating robot is equipped with a grappling gun and an antenna that "zaps" a lightning bolt at the floor below it.]
:Robot: ZAP
:Ponytail: Our robot floats using a helium sphere, which is highly charged and can induce lightning strikes.
:Ponytail: It moves using a grappling gun like the hook shot from ''Zelda''.
:Off-screen voice: What is the robot '''''for'''''?
:Ponytail: Uh
:Ponytail: It could help with search and rescue after disasters.

:[Caption below the panel:]
:"It could help with search and rescue" is engineer-speak for "we just realized we need a justification for our cool robot."

{{comic discussion}}

[[Category:Comics featuring Ponytail]]
[[Category:Robots]]
[[Category:Video games]]
[[Category:Engineering]]

614: Woodpecker

2022-05-11T18:02:17Z

BetaOS: Undo revision 267133 by 👖🔥 (talk)

{{comic
| number = 614
| date = July 24, 2009
| title = Woodpecker
| image = woodpecker.png
| titletext = If you don't have an extension cord I can get that for you too. Because we're friends! Right?
}}

==Explanation==
[[Beret Guy]] observes a {{w|woodpecker}}. A woodpecker is a type of bird known for using its bill to bore holes into trees to get access to and eat the insects living inside. [[Megan]] notes that the bird hatched approximately a year ago. Beret Guy seems touched by this fact, and attempts to explain to the woodpecker that it is the woodpecker's birthday.

Beret Guy leaves a present by the foot of the tree where the woodpecker is nesting. The woodpecker opens the present which turns out to be a power drill, a mechanical tool that is used to bore holes into wood, much quicker than a bird normally could. Not that this would be of much use to the bird, as the bird has no electricity{{Citation needed}} and so no means of powering the drill, let alone {{w|opposable thumbs}}{{Citation needed}} with which to operate the drill. In spite of this, the woodpecker has not only unwrapped the present; it has apparently accepted it, and flies off with it.

The title text appears to be Beret Guy talking to the bird still, pointing out that he can get the bird an extension cord to operate the drill because, in his mind, they are friends. In actuality, the bird may or may not care about the drill or Beret Guy. An extension cord, also, would not do much good as the bird would still have no electricity, and if it did have a source of electricity and was able to use the drill, it wouldn't be able to fly further than the length of the extension cord, which isn't far for a bird. This could be a reference to [[509: Induced Current]].

==Transcript==
:[Megan and Beret Guy are standing on a deck.]
:Beret Guy: A Woodpecker!
:''pop pop pop''
:Megan: Yup.
:[Woodpecker knocking against a tree.]
:Megan: He hatched about this time last year.
:''pop pop pop pop''
:[Megan leave the frame, leaving Beret Guy on the deck alone.]
:Beret Guy: ...Woodpecker?
:Beret Guy...It's your Birthday!
:Beret Guy: Did you know?
:Beret Guy: Did nobody tell you?
:[Beret Guy leaves the frame, changes to the tree base.]
:[Beret Guy brings a gift and places it at the tree trunk.]
:[The woodpecker comes down and opens the gift.]
:[The woodpecker flies away holding onto the cord of a power drill.]

==Trivia==
*A T-shirt based on this comic is available in the [https://store.xkcd.com/products/woodpecker xkcd store].

{{comic discussion}}
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Beret Guy]]
[[Category:Comics with xkcd store products]]

387: Advanced Technology

2022-05-11T18:02:01Z

BetaOS: Undo revision 267139 by 👖🔥 (talk)

{{comic
| number = 387
| date = February 22, 2008
| title = Advanced Technology
| image = advanced_technology.png
| titletext = We are sexy, sexy Von Neumann machines.
}}

==Explanation==
[[Cueball]] is fascinated by [[Megan]]'s uterus—because it can create a copy of herself (albeit not an identical copy). Despite how advanced technology is, humans still have not been able to create a machine that replicates itself, an accomplishment to which only biological organisms can lay a claim.

The title text refers to a {{w|Self-replicating_machine|Von Neumann machine}}, what is usually called "Von Neumann probe" or "Self replicating machine," a machine that would be capable of building a fully functional copy of itself. It just takes sex involving two individuals of a different sex to start the human replication factory.

==Transcript==
:[Cueball is inspecting Megan's abdomen.]
:Cueball: It's neat how you contain a factory for making more of you.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Sex]]

802: Online Communities 2

2022-05-11T18:01:43Z

BetaOS: Undo revision 267137 by 👖🔥 (talk)

{{comic
| number = 802
| date = October 6, 2010
| title = Online Communities 2
| image = online_communities_2.png
| titletext = Best trivia I learned while working on this: 'Man, Farmville is so huge! Do you realize it's the second-biggest browser-based social-networking-centered farming game in the WORLD?' Then you wait for the listener to do a double-take.
}}
A [http://xkcd.com/802_large/ larger version] of this picture can be found by clicking the comic on xkcd.
{{TOC}}

==Explanation==
This comic shows a map of internet communities where the size of each region roughly corresponds to its size, and its proximity to other regions indicates similarities.

This is the successor of [[256: Online Communities]]. It differs in that it is updated, and furthermore, instead of using the ''membership'' of whichever service to determine its size on the map, it uses its "daily social activity."

The map actually has two super−maps intended to show the relative usage of types of communication: the online community map is surrounded by the much larger "countries" of E−Mail, SMS ("Instant Messaging") and "Cell Phones," which in turn are surrounded by the even huger "Spoken Language." It is unclear whether "Cell Phones" is intended to represent an independent region, or whether it is meant to be a sub-region of "Spoken Language." The ambiguity is exacerbated by the fact that cell phones are the primary medium of SMS, and are also used to access email and online communities. It's also unclear why other forms of communication, such as handwritten letters, are not included.

At the title text [[Randall]] explains that, using his definition of "most activity per day," Farmville is actually the ''second'' most popular social-network farming game - the Chinese game Happy Farm was more popular at the time. This strikes many English-speaking xkcd readers as odd, because Farmville is much more famous, leading one to wonder how it could not be the most played. The phrase "browser-based social-networking-centered farming game" is an example of an [http://tvtropes.org/pmwiki/pmwiki.php/Main/OverlyNarrowSuperlative overly-narrow superlative.]

===Facebook Region===
The Facebook region deals with social networks, that is, websites oriented towards having people meet.

'''{{w|Facebook}}''' is a social networking site that allows people to meet old real−life friends and make new friends that share similar interests. One of its most notable features is that a member can update a "status" or make normal posts about the happenings of the member's life, complete with pictures, other members "liking" these posts. The size of the Facebook region is not exaggerated; most websites seem to allow "liking" their content or allow/require logging in the website with a Facebook account. There even are cell phones with a "Facebook" button!

*'''{{w|FarmVille}}''' and '''{{w|Farm Town}}''' are Facebook games in which users manage farms. '''{{w|Happy Farm}},''' the Chinese game that inspired the other two, does not require Facebook integration, so it is separated by a solid line from Facebook. The "Unethical Bay" refers to how these games tend to addict players into constantly buying virtual items of questionable value.

*'''People You Can't Unfriend''' refers to people whom, due to real-life expectations and relationships, unfriending them is difficult, no matter how you really feel about them.

*'''Blatherskite River''' refers to the conversations on Facebook, which may be long yet devoid of general meaning or logic.

*'''Data Mines''' refer to the data mining that Facebook does with the interests of its members. This fuels the profitable advertising business at the expense of customer trust.

*'''Plains of Awkwardly Public Family Interactions''' refer to how interactions with family members on Facebook suddenly become more awkward because everyone on Facebook (and sometimes ''off'' Facebook, given that you do not necessarily need to log in if you want to see someone's Facebook account) if you are discussing with your family through post comments.

*'''524,287 Strong for Mersenne Primes''' refers to the communities who gain followers for a cause. A {{w|Mersenne prime}} is a prime number that is 1 less than a power of 2; 524287 is the 7th known Mersenne prime.

*'''Jungle-Bay Mountains of "It's Complicated"''' refers to one of Facebook's options as to what a user's relationship status currently is. A Jungle-Bay Mountain is a complicated and undefined climate, hence the complication.

*'''"lamebook bay"''' refers to the online website "lamebook", where users post photos of funny things that happen on Facebook (these can include statuses, "fails", put-downs and images.)

*'''"Old Facebook" Resistance''' refers to Facebook's earlier users, who have often resisted (and resented) changes made to Facebook as it became more popular.

*'''Privacy Controls''' is located on the map surrounded by a Lava Pool, which is a reference to how difficult it is to find the privacy controls within Facebook.

*'''Niche Market Mountains''' refers to social networks aimed towards more niche markets are located. Similar to how mountains tend to be isolated from mainland, niche social networks tend to be just that: niche, without much interaction with the general populace.
*'''Charred Wasteland of Abandoned Social Networks''' refers to the tons of websites wanting to take advantage of the success of websites like Facebook to compete or even overpower with them. Even so, these websites tend to not have the userbase or even the expertise towards the long-term, hence they become wastelands: environments devoid of life, except the few life forms that are from these wastelands (in this case, the ones who are loyal to the website or which are sadly few).
*In the Charred Wasteland stands '''{{w|Ozymandias}}''', the titular broken statue of Shelley's poem. In the poem, only "two vast and trunkless legs of stone" and a "shattered visage" are all that remain of the once-great statue and both of these features are present in the comic. According to the poem, the pedestal before the broken statue reads "My name is Ozymandias, king of kings..." hence "friend of friends" below Ozymandias on the map.
*In the north are the '''Duckface Mountains''' and the '''Red Cup Mountains'''."Duckface" refers to [http://knowyourmeme.com/memes/duck-face this incredibly obnoxious facial expression], and "red cup pictures" are any pictures containing party-goers holding disposable red plastic beverage cups. Facebook is absolutely flooded with both types of pictures.
*In the south is '''Buzzword Bay'''. {{w|Buzzword}}s are words and phrases that make you sound a lot more topical than you actually are, used to garner attention; again, Facebook status updates are commonly filled with buzzwords.

While Facebook is the largest "country" of the Facebook Region, there are a lot of smaller "countries" that represent smaller social networks.

*Below Facebook (and "Old Facebook' Resistance") is '''{{w|Diaspora (social network)|Diaspora}}''', a fully open-source, decentralized, privacy-respecting-and-expecting alternative to Facebook. From what this map tells, Diaspora is little-known, even if Facebook is taken out of the context.
*'''{{w|StudiVZ}}''' is a German-speaking social network similar if not a ripped-off version of Facebook.
*'''{{w|XING}}''' is a German-speaking social platform similar to LinkedIn.
*'''{{w|Ning (website)|Ning}}''' is a service to create custom social websites. Its free services shut down in 2010.
*'''{{w|Taringa!}}''' is a Spanish-speaking social network that is based on a forums. Copyrighted material is frequently found there.
*Next to the Euro(pean) Gulf is '''{{w|Skyrock (social network site)}}''', a French-speaking social network.
*'''{{w|Wer-kennt-wen}}''' is a German-social network somewhat like MySpace.
*'''{{w|Nasza-klasa.pl}}''' or NK, is a Polish-speaking social network based on school relationships.
*'''{{w|Badoo}}''' is a social network primarily based on dating and picture-sharing.
*'''{{w|Classmates.com}}''' is a service in which the user can meet classmates that came from the same high school. The website is probably best known by its memetic advertisement that said [http://dudemanphat.blogspot.com/2005/10/how-am-i-supposed-to-care-about-nick.html "She married him??!! And they've got 7 kids??"] (Incidentally, [http://seattletimes.com/html/businesstechnology/2003325519_adcouple27.html there is more to the coupled picture than what the advertisement says.])
*'''{{w|Myspace}}''' is a social networking website that is a kind of proto-Facebook: users could customize their one-page websites with whatever they wanted, make their interests and daily lives public, and interact with other users. Back in the mid 2000s, MySpace was the largest social network, many people using the website; however, the surprisingly-less-customizable Facebook ended up taking the place of MySpace. The "bands" country of MySpace refers to how a lot of bands in the day advertised and interacted using the website. Indeed, the latest incarnation of MySpace (in terms of 2013) is more oriented towards band members.
*'''{{w|LinkedIn}}''' is a social network aimed towards people in the workplace, which is why it is adjacent to '''Corporate Bay'''.
*'''{{w|Orkut}}''' was one of Google's first social networks before Google made [https://plus.google.com/ Google+]. It shut down in 2014.
*'''{{w|Hi5}}''' is a social network that is very popular among people in Latin America.
*'''{{w|Renren}}''' ('''「人人」''', "people" in Chinese) is "a Chinese copy of Facebook."
*'''{{w|Bebo}}''' was a social network popular in the United Kingdom and Ireland. It went bankrupt in 2013 and will move away from social networking and into apps.
*'''{{w|Friendster}}''' - One of the first major social networks, it has fallen way off in usage in recent years and was eclipsed by MySpace. It is still popular in Asia.
*'''{{w|VK (social networking website)|Vkontakte}}''' or VK, is the second largest social network service in Europe after Facebook. It is available in several languages, but particularly popular among Russian-speaking users around the world.
*'''{{w|Netlog}}''' is a Belgian social networking website specifically targeted at the global youth demographic.
*'''{{w|Mixi}}''' is an online Japanese social networking service.
*'''{{w|Qzone}}''' is a social networking website, which is big in China. According to a report published by Tencent, possibly surpassing other social networking websites like Facebook and MySpace in China.
*'''{{w|Tuenti}}''' is a Spain-based, social networking service, that has been referred to as the "Spanish Facebook."
*'''{{w|Cloob}}''' is a Persian-language social networking website, mainly popular in Iran. After the locally (and internationally) popular social networking website Orkut was blocked by the Iranian government, a series of local sites and networks, including Cloob, emerged to fill the gap.
*'''{{w|Kaixin001}}''' is a social networking website which ranks as the 13th most popular website in China and 67th overall.
*'''{{w|Piczo}}''' was a privately held blog website for teens. In November 2012, Piczo.com shut down.
*'''{{w|Odnoklassniki}}''' is a social network service for classmates and old friends. It is popular in Russia and former Soviet Republics.
*'''{{w|Adult FriendFinder}}''' is a pornographic dating site.
*'''{{w|Match.com}}''' is a dating site, mainly targeted at people looking for marriage.
*'''{{w|Ok Cupid}}''' is another dating site, however it has been owned by Match.com since 2011.
*'''{{w|PlentyofFish}}''' is yet another dating site, also owned by Match.com since June 2015.
*'''{{w|Sulawesi}}''' is a real-life island in the Indonesian archipelago. It also appears in 256: Online Communities.

===MMO Isle===
MMOs (short form of "Massive Multiplayer Online Game") are online games where multiple people take the role of a character and play in a setting hosted by the game.

*'''[https://www.habbo.com/ Habbo Hotel]''' is a website where someone creates a human avatar an interacts in a virtual world that is not that different from the one in real life.
*'''{{w|Club Penguin}}''' is [http://disney.com/ Disney's] former MMO where someone creates a penguin avatar and interacts with other in a more polar, cartoony setting. Club Penguin is aimed towards children. It has been shut down near the end of March 2017.
*'''[http://maplestory.nexon.net/ Maple Story]''' is an MMO that has a more natural setting. The most distinguishing feature of Maple Story is its cartoony pixel art.
*'''[http://www.gamefaqs.com/ GameFAQs]''', while not an MMO, is a website that has the largest repository of walkthoughs, that is, guides that help someone beat a game. GameFAQs is notable for not only its large repository of walkthroughs of games that are across an extreme variety of consoles, handhelds, and even computers (not all of them MMOs), but also the drama that is rumoured to happen in the GameFAQs forums.
*'''[http://www.ign.com/ IGN]''' (full: '''Imagine Games Network'''), while also not an MMO, is the largest website that gives news on video games in general, not just MMOs. Each of the games mentioned in the site have pages that have summaries, reviews, screenshots, other art, videos, and links to news related to its games.
*'''[http://www.playonline.com/ff11us/index.shtml FFXI]''' (full: '''Final Fantasy XI''') is an MMO from SquareEnix, being the first MMO of the popular ''Final Fantasy'' series.
*'''[http://www.runescape.com/community Runescape]''' is an older MMO.
*'''[http://us.battle.net/sc2/en/ Starcraft II]''' is a realtime strategy game with a science fiction setting that heavily involves space travel. While technically not an MMO, it has a significant online multiplayer component.
*'''[http://us.battle.net/wow/en/ WoW]''' (full: '''World of Warcraft''') is the definitive MMO, being not only the most popular and one of the longest-running but also the most expansive (having its own spinoff games, comic books, novels, and even figurines), WOW giving the idea of how an MMO should be. A player can choose from a variety of races, each with its own heavy history.
*'''[http://secondlife.com/ Second Life]''' is similar to Habbo, albeit with a bigger suspension of disbelief (one example being that the player does not need to be a human) and in a 3D setting.
*'''[http://www.nationstates.net/ NationStates]''' is a text-based political simulation game. Notably, some of its traffic comes not from the actual game (which is optional), but the extensive set of political, roleplaying, and general forums attached.
*'''[http://www.urbandead.com/ Urban Dead]''' describes itself as "A Massively Multi-Player Web-Based Zombie Apocalypse", which sums it up pretty well.
*'''[http://www.kingdomofloathing.com KoL]''' (full: '''Kingdom of Loathing''') is a comedic browser-based MMO-ish RPG with minimalistic stick-figure art.
*'''{{w|CDC Games}}''' is a Chinese company reputed to be the largest MMORPG distributor.
*'''{{w|Eve Online|EVE Online}}''' is a science fiction MMO which is notable because of its virtual economy.
*'''{{w|Gaia Online|Gaia}}''' or Gaia Online, while not an MMO, is a forum oriented towards pop culture, including video games and Japanese media. Its most notable feature is the heavy customization possible of a member's pixel-art avatar. Its members tend to roleplay a lot, albeit in a more written, story-based form. Gaia has gained a reputation with its members stealing art and causing drama. The ferry that links the gaia island with 4chan was most likely due to the "boxxy" row, where vlogger boxxy posted videos of her using gaia, which then were circulated on 4chan. This resulted in a division of the sites users, and many more hacking attacks, including a DDOS attack on 4chan itself.
*'''[https://www.everquest.com EverQuest]''' (full: '''EverQuest''') is one of the first MMO's, it's still running and has a huge number of expansions.
*'''[https://www.uo.com UO]''' (full: '''Ultima Online''') along with EverQuest this was one of the first and longest running MMO's.

*'''{{w|City of Heroes|CoH}}''' or City of Heroes was a superhero-based MMORPG that was shut down November 2012.
*'''[http://atlantica.nexon.net/ Atlantica]''' (full: '''Atlantica Online''') is a turn-based MMORPG.
*'''[http://lineage.plaync.com/ Lineage]''' is a Korean MMORPG, it's North American servers were closed 2011/06/29 due to being unprofitable.
*'''[http://www.lineage2.com/en/ Lineage II]''' is a Korean MMORPG, mainly played in Asia along with its predecessor. It adopted a Free to Play model on 2011/11/30.
*'''{{w|SubSpace (video game)|SubSpace}}''' was a 2D, topdown shooter released in 1997. The servers have been shut down, but it continues to operate through the work of fans. It's widely considered an early entry into the MMO genre due to its unprecedentedly high player count.

Other notable regions include:
*The '''Mountains of Steam''', referring to the game distribution service [http://store.steampowered.com/ Steam] where people can buy and download video games in general, not just MMOs. There is also an extensive [http://steamcommunity.com/ community] where users can share content, and instant messaging chat by text, voice, or game streaming.
*'''River Grind''' refers to "grinding." In most MMOs, the character is a fighter of some sorts, yet starts at a level 1, signifying the character's aptitude level in combat. The character can level up and gain more aptitude levels through earning experience, of which the most reliable and otherwise common way is the process of "grinding," that is, repeatedly fighting opposing monsters (sometimes of a level notably lower that your character's), gaining experience points from winning these battles until your character gains a level, that is, "levels up". While a practical necessity in strengthening the character, this process can be tiresome, hence the expression "grinding."
*'''Spawn Camp''' refers to "spawn points", the places where AI-powered enemies and players who have died in-game respawn, and the act of "spawn camping", in which the player character simply stands behind or around the spawn points to fight the enemy creatures or respawning players as soon as they appear.
*'''Gulf of Lag''' refers to how the MMO can be slowed down a considerable amount due to the large amount of players simultaneously using the same server, this congestion bogging down the server and frustrating the users.
*'''[http://knowyourmeme.com/memes/final-boss-of-the-internet End Guy for the Internet]''' refers to "end bosses," the last — and usually hardest to defeat — "bad guy" in a game (or a section of a game).

===YouTube Region===
The YouTube region refers to websites that are based on user-created content.

'''[https://www.youtube.com/ YouTube]''' is the definitive video website where people can upload videos with the purpose of public viewing, ranging from home movies through official music videos through Let's Plays of people playing video games to questionably-legal uploads of cartoons and films. Google had purchased YouTube.

Many of the sites on the map are just references to {{w|viral video}}s at {{w|YouTube}}:
*'''Viral Shores''' refers to how viral videos (whether they be viral marketing or simply memes) tend to proliferate on YouTube.
*'''Britney''' likely refers to pop singer {{w|Britney Spears}} and the [http://www.youtube.com/watch?v=kHmvkRoEowc‎ "Leave Britney Alone" guy].
*'''Maru Gulf''' refers to Maru the Cat, a YouTube celebrity [http://www.explainxkcd.com/wiki/index.php/676:_Abstraction also mentioned in xkcd].
*'''Prairie Dog Habitat''' likely refers to the viral video [http://www.youtube.com/watch?v=a1Y73sPHKxw Dramatic Chipmunk] (which is actually a Prairie Dog).
*'''Rick Rolling Hills''' references, well, {{w|Rickrolling}}. More information [http://www.youtube.com/watch?v=dQw4w9WgXcQ here]. The "deserted" note likely refers to how Rick Astley himself is tired of the meme, or again, how people tend to leave the video upon getting "Rick Roll'd," never actually going to the video with the express purpose of viewing the video.
*'''Lunar Landing Soundstage''' is, of course, a reference to the {{w|Moon landing conspiracy theories}}, which Randall has railed on before.
*'''{{w|OK Go}} Bay''' refers to the band "OK Go" who have multiple viral music videos on YouTube, most famously [http://www.youtube.com/watch?v=dTAAsCNK7RA "Here it goes again"] featuring treadmills.

The '''HTML5 swamp''' refers to YouTube's spotty support of HTML 5 (an update on HTML that is frequently touting its media capabilities, making HTML 5 a viable alternative to Flash). Of course, by the time the comic was written, HTML 5 was still in its infancy. The Music Video Bay refers to the amount of music videos (official or otherwise) are present in YouTube.

Other counties of the YouTube region include:
*'''[https://vimeo.com/ vimeo]''', a website where people tend to showcase artistic content that they made on their own, notably independent studios.

Snob Sound:
*'''[https://secure.flickr.com/ Flickr]''', a website where people can upload and share photographs they took.
*'''[http://fotolog.com Fotolog]''', a photo website very popular in South America in 2004-2008, which was used as a social network.
*'''[http://www.last.fm/ Last.fm]''', a music website that is notable of its "scrobbling" feature.
*'''[http://www.deviantart.com/ deviantArt]''', the largest art website, where people can upload, sell, and buy not only art itself, but also video, audio, Flash-work, and even skins (the original purpose of deviantArt). While many big-name/professional people and organizations have their works in deviantArt, the site is more infamous for the large amount of people who upload low-quality fan-art and fan-characters, most notably of media from Japan. Another point of infamy is the large amount of drama that can happen in the website.

*'''[https://www.newgrounds.com/ Newgrounds]''', a website that hosts art, (Flash-based) videos, audio, and (Flash-based) games to which other users can comment and rate. Even so, content from Newgrounds tends to be obscene, though there is a filtering system if a viewer does not wish to see obscene content.
*'''[http://www.chatroulette.com/ Chatroulette]''' is a website where people are randomly paired up with each other and video/text chat.
*'''{{w|Brickshelf}}''' is the online resource for {{w|LEGO}} fans.
*'''[https://tumblr.com/ Tumblr]''', where people could make a blog and post text, pictures, video, audio, quotes, and links. The most distinguishing feature is the ability to "reblog" these posts from other's people's blogs into the user's own blog. Notable features of Tumblr include sketchblogs (where people upload their sketches), Ask blogs (where people answer questions other users ask, the moderators of these blogs usually pretending to be a character from a form of media), and the large amount of "social justice" (a highly controversial political movement). (See also [[1043: Ablogalypse]].)
*'''{{w|b3ta}}''' is a popular British website, described as a "puerile digital arts community" by The Guardian.

The '''Isle of teenagers who just discovered macroeconomics''' is a joke about how teenagers tend to think that the world and the economy are a lot simpler than they actually are. Combined with the typical internet mindset, this leads to a lot of teenagers posting blogs and videos and comments on blogs and videos describing how idiotic the government and other red-tape-related adults are.
The '''Snob Sound''' could refer to the large amount of people who look down on others in the surrounding websites (one example being an original artist looking down on people who draw mainly fan-art). '''The Iraq''' is a reference to Miss Teen USA 2007, in which Ms. Teen South Carolina, Lauren Katlin, said "I believe that our education like such as in South Africa and the Iraq everywhere like such as...the US should help the US and should help South Africa and should help the Iraq and the Asian countries so we are able to build up our future." The usage of "the Iraq" has became a meme.

===Twitter Region===
*'''Bieber Bay''' is a reference to {{w|Justin Bieber}}, a pop singer whose singing sprouted on YouTube and became very popular on Twitter and other social media. He is very much vilified because of his rather feminine appearance and his hordes of fans (called "Beliebers") that seem to support him to ridiculous extents. Lately, though, Justin Beiber has taken a "bad boy" attitude because of all the Beliebers who are willing to defend him no matter what, him partaking in a lot of questionable activities that include tattoos, questionably-legal substances, and buying prostitution, thus lowering his popularity in the general populace.
*'''{{w|Google Buzz}}''' is a former social network attempted by Google. It has since been shut down.
*'''Bit.Ly Mountains''' is a reference to the URL shortening service {{w|bit.ly}}.
*'''Kanye's Isle of Sadness''' is a reference to the musician {{w|Kanye West}}, whose Twitter, at the time, was [http://www.buzzfeed.com/mlew15/25-of-kanye-wests-most-thought-provoking-tweets-h0se famously introspective and stream-of-consciousness].
*'''Sarah Palin USA''' is the Twitter handle of former politician {{w|Sarah Palin}}.
*'''Clueless Politician Coast''' is a reference to the number of politicians on Twitter and other social networks who repeatedly share clueless updates that more often create an uproar than help their election chances.
*'''Desert of Food Updates''' is a reference to the number of pictures of food that are shared on social media (especially Twitter). There has even been some controversy on posting such pictures.
*'''Journalists Trying to Find the Cutting Edge''' is referencing journalists on Twitter trying to keep up with the way that news is gathered and delivered now, despite usually working for a newspaper that publishes once a day.
*'''SHAQ''' is a reference to the former NBA basketball player, {{w|Shaq}}.
*'''{{w|identi.ca}}''' is an open source social networking and micro-blogging service, being an alternative to Twitter.
*''' Breaking! Waves''' is a pun on the fact that so many people used the word "Breaking" at the beginning of tweets that do not warrant that tag that the word has lost most of its meaning and become a joke. It is a pun because waves "break" on the shore.
*'''Web 3.0''' refers to the unofficial term {{w|Web 2.0}}. In this case, "Web 1.0" refers to websites that give information to users. Web 2.0 refers to websites where the users themselves create content. Web 3.0 has sometimes been used as a term for {{w|semantic web}}, a machine-readable version of the web, but this usage is far from universal.
*'''Hashtag games whose popularity confuses and depresses you''' refers to the game where a user posts something under a particular hashtag and others respond with their own ideas, all tagged under the same phrase. This has been very popular for no clear reason, as Randall notes.

===Geotagged Bay===
*'''{{w|Yelp}}''' is a website where people post reviews of real-life public locations (one example being restaurants).
*'''{{w|Geocaching}}''' is a worldwide GPS scavenger hunt where users upload positions of caches and others will find them and log it online.
*'''{{w|Foursquare}}''' is a location-based social network.
*'''Latitude''' refers to {{w|Google Latitude}}.

===Troll Bay and the Sea of Memes===
*'''{{w|Reddit}}''' is the self-described "front page of the Internet" in which users submit stories, photos and videos and the best are "up-voted" to the top of the page.
*'''{{w|Help:Using talk pages|Wikipedia Talk Pages}}''' refer to the pages where Wikipedia editors discuss how to improve articles.
*'''{{w|Wikia}}''' is a website offering free-of-charge wiki hosting, using a variant of Wikimedia's MediaWiki, allowing users to create user-editable encyclopedias of just about any subject matter, although it has more recently introduced an entertainment blog named "Fandom powered by Wikia" and eventually adopted that branding for the wiki farm as well.
*'''{{w|StumbleUpon}}''' was a website-sharing service, it shut down in 2018.
*'''{{w|Delicious (website)|Delicious}}''' is a bookmarking and bookmark-sharing service.
*'''{{w|Digg}}''' is a former competitor to Reddit in the social-news sphere, but now has been sold and restarted as an aggregator of news stories. The lifeboats refer to the mass exodus of users from Digg to rival news aggregator Reddit that occurred after Digg's glitchy and unpopular "v4" redesign in August 2010.
*'''{{w|Slashdot}}''', labeled "/." on the map, is a technical news site.
*'''{{w|MetaFilter}}''', labeled "MeFi" on the map, is a long-running community blog.
*'''{{w|Fark}}''' is a community website that allows members to comment on news articles from other sites.
*'''{{w|YTMND}}''' is an acronym for "You're The Man Now, Dog!" It's also a community in which users can create meme-type nonsense by playing music over an image (either static or animated).
*'''{{w|Free Republic}}''' is a right-wing conservative activist forum.

===Skype Region===
The Skype Region refers to different IM, or Instant Messaging services, that enable almost-real-time text chatting between multiple people. These often allow services like voice chat and even video calls.

*'''{{w|Skype}}''' is, according to Randall, the most popular of these among the internet. It has many features to allow peer-to-peer voice chats, as well as allowing calls to be made at a price to actual phones.
*'''{{w|AIM}}''' or AOL Instant Messenger is a chat client created by AOL.
*'''GG''' or {{w|Gadu-Gadu}} is an instant messenger client popular in Poland.
*'''{{w|Yahoo Messenger}}''' is an instant messenger client by Yahoo.
*'''{{w|Google Talk}}''' is a voice/video chatting service from Google (that Google has been replacing with Hangouts). Google Talk also has an invasion fleet at its shores.
*'''{{w|ICQ}}''' is an older messaging service, albeit with an 18+ requirement (despite pornography not being the point of ICQ).
*'''{{w|Windows Live Messenger}}''', or "MSN", was the messaging service of Microsoft before Microsoft bought Skype. MSN was useful in that people could draw and send pictures to other chatters.
*'''{{w|UseNet}}''' was one of the original ways to communicate on the internet, though people can download (copyrighted) files through the service. Since it is still in use by some, it gets the tag "Still Around!" on the map.
*'''{{w|IRC}} Isles''' refers to the ancestor of Internet-powered chatting. People would have connected to a server and spoke publicly. IRC is still in use (as of 2014), notably in getting help from other users. One of those isles is #xkcd which is an IRC community around [[xkcd]].

===Bay of Drama===
*'''{{w|FanFiction.net}}''' is a website where people can submit their fanfiction (stories by fans written about other peoples' media, normally that about popular media). The website tends to have people that are not helpful to those who legitimately want critique of their own stories.
*'''{{w|Xanga}}''' is a blogging service that, while popular at its time, lost out to...
*'''{{w|LiveJournal}}''' was the most popular blogging service before Tumblr.
*'''ONYD''' - Reference to {{w|Oh No You Didn't}}, which is explained in the Blogosphere region.
*'''{{w|Dreamwidth}}''' is a LiveJournal fork emphasizing its open-source nature.

===Blogosphere===
The Blogosphere region contains several general {{w|blog}} topics.
*'''{{w|photo blog|Photo Blogs}}''' are commonly used to chronicle the lives of the authors through photographs.
*'''Diary Blogs''' are another popular use of blogs (and, in fact, the original use) where authors write commentary about their lives.
*'''Bay of Grammar Pedantry''' deals with the fact that, whether due to a lack of proper education, a habit of using "chat-speak" in the text-limited SMS and MMS, or simply due to the (generally) more relaxed nature of the Internet, blog authors tend to write with horrible composition, a point of annoyment to a lot of other people due to the subsequent increased difficulty of reading the horribly-written material.
*'''Fandom Blogs''' are blogs created by a "{{w|fandom}}" which is a community of fans. A fandom blog deals with the subject matter of the respective fandom.
*'''Sea of Zero (0) Comments''' refers to blogs that get very little attention and therefore have no comments.
*'''SpamBlog Straits''' references spammers who use blogs to increase the number of links to their site to try to game search engines.
*'''OffTopic.com''' is a general interest forum that refers to itself as "the largest general discussion forum on the internet."
*Many more straightforward blogs, including:
**'''Writing/Poetry'''
**'''Gossip Blogs'''
**'''Political Blogs'''
**'''Music Blogs'''
**'''Tech Blogs'''
**'''Business Blogs'''
**'''Corporate Blogs'''
**'''Religious Blogs'''
**'''Miscellaneous Blogs'''
*'''Blog Blogs''' - These can refer to blogs that talk about the matter about blogging itself, though they can also refer to blogs which authors use in talking about blogging.

===Blogosphere (Core Region)===
Gossip Blogs:
Each blog below focuses on gossip surrounding celebrities and other well-known persons.
*'''{{w|Jezebel}}''' is a liberally feminist blog, hosted by Gawker.
*'''{{w|deadline.com|Deadline}}''' is an online entertainment news magazine.
*'''{{w|TMZ}}''' is a celebrity news website.
*'''{{w|Gawker}}''' is a blog that is the host of other blogs.
*'''LJ Oh No They Didn't''' - LiveJournal {{w|Oh No They Didn't}} - Oh No They Didn't, also known as ONTD, is the largest community on LiveJournal with over 100,000 members. The community focuses on celebrity gossip and pop culture with most of its posts aggregated from other gossip blogs.
*'''Doucheblog''' refers to blogs that were once insightful but that spiraled into long rants due to relationship changes of their authors.
*'''Isle of Mockery''' is a reference to the fact that some of what these blogs do is mock celebrities or other for doing or saying stupid things on camera.

Liberal Blogs:
Each blog below focuses on American political news with a "liberal" or "progressive" slant. These blogs tend to lean for the Democratic party.
*'''{{w|Huffington Post}}''' is a news blog.
*'''{{w|Paul Krugman}}''' is an American economist who considers himself a liberal.
*'''{{w|Daily Beast}}''' is a news and opinion website focusing on politics and pop culture.
*'''{{w|Talking Points Memo|TPM}}''' is a political journal run by Josh Marshall.
*'''{{w|Ezra Klein}}''' used to have his own site at the Washington Post, but is now the editor of [Vox.com].
*'''{{w|Think Progress}}''' is a political news blog.
*'''{{w|Daily Kos|Kos}}''' is another political blog.

Bay of Flame:
*'''{{w|Politics Daily}}''' is a political journalism website launched by AOL.
*'''CNN Political Ticker''' is CNN's political blog.
*'''{{w|Mediaite}}''' is a news and opinion blog covering politics and entertainment in the media.
*'''{{w|NY Times}}''' is one of the most famous newspapers, thus the comparatively large size of its island.
*'''{{w|The Talk}}''' is a talk show on CBS that discusses the latest headlines "through the eyes of mothers."
*Libertarian Isle (shaped like a {{w|Nolan Chart}})

Conservative Blogs:
Each blog below focuses on American political news with a "conservative" or Republican slant.
*'''{{w|Pajamas Media}}''' is a media company and operator of conservative news.
*'''{{w|Michelle Malkin}}''' is a conservative blogger, political commentator, and author.
*'''{{w|Hot Air}}''' is a news blog founded by Michelle Malkin.
*'''{{w|RedState|Red State}}''' is a political blog.
*'''{{w|American Thinker}}''' is a daily online magazine focused on politics.
*'''{{w|Townhall}}''' is a web publication and print magazine.

Tech Blogs:
*'''{{w|Boy Genius Report}}''' is a weblog that focuses on technology and consumer gadgets.
*'''{{w|Gizmodo}}''' is a news and opinion blog, hosted by Gawker, that talks about life's more technological matters.
*'''{{w|Engadget}}''' is another technology-oriented, albeit independent, blog.
*'''Crunchgear''' is a blog that reviews gadgets and other hardware.
*'''{{w|Techcrunch}}''' is an online publisher of technology industry news.
*'''{{w|Joystiq}}''' is a news and opinion blog that focuses on gaming.
*'''{{w|Kotaku}}''' is another gaming-oriented news/opinion blog, the main difference being that Kotaku is owned by Gawker.

Assorted:
*'''{{w|BoingBoing}}''' is "i blog about wonderful things", the topics being quite random.
*'''{{w|Lifehacker}}''' is another Gawker blog, is a blog that teaches people how to simplify their lives through 'lifehacking', that is, using their resources in creative wayss. While the subject matter is life in general, there is a significant technological slant.
*'''{{w|Deadspin}}''' is a sports and sports gossip blog founded by Will Leitch. It has since been acquired by Gawker
*'''Meatorama''' is a blog that talks about cooking meat.

===QQ Region===
*'''Baidu Baike''' (「百度百科」, "Baidu Encyclopedia") and '''Hudong''' (「互动百科」, "Interactive Encyclopedia" ) are two Chinese online encyclopedias. Baidu Baike is powered by the same company as Baidu, the search engine popular in China.
* The '''Ma Le Ge Bi''' and the '''Grass Mud Horse Bay''' could refer to the {{w|Baidu 10 Mythical Creatures}}.
* The '''Location of Jia Junpeng''' refers to the Internet meme of {{w|Jia Junpeng}} in 2009 in China.
*'''{{w|Tencent QQ}}''' is a Chinese instant messaging program.
*In English communities "QQ" has several more common definitions:
**An {{w|emoticon}}, representing a face with two large, crying eyes.
**A synonym for "rage quit", in which a video game player quits the game out of sheer frustration. It originated in ''Warcraft II'' multiplayer, where pressing Ctrl+Q+Q would quit the game, and became more widely known in ''World of Warcraft''.
**These definitions are commonly combined, usually to mock the "rage quitter".
*The Gulf of China refers to how sites in the region are based in People's Republic of China ("Red China"). The '''Great Firewall''' refers to {{w|The Great Firewall of China}}, a pun on {{w|The Great Wall of China}}. Similar to how The Great Wall of China was meant to keep intruding nations out of the then-capital of the city, The Great Firewall of China is meant to keep visitors from visiting censored websites. Oddly other Chinese websites (Qzone, Renren etc.) are not enclosed in this zone.

===Forums Islands===
Forums are websites where one person post a topic to which other people can discuss.

While the map has a zoomed in version, this article shall discuss the two bigger islands, first.

*'''[http://www.2ch.net 2channel]''' is a Japanese imageboard that was actually the original inspiration for 4chan.
*'''[http://www.craigslist.org/about/sites Craigslist]''' is a classified advertisement website with sections devoted to just about everything... which formerly included prostitution services, hence the '''The Former Site of Adult Services'''.

In the zoomed-in map, there is the following:
*'''[https://www.4chan.org/ 4chan.org]''' is an {{w|imageboard}} in which people can upload pictures while others comment on them. The website is infamous for its loose/often non-existent rules, incredibly vulgar userbase, source of new memes, and spawning of trolls. 4chan's random board, known internally as '''/b/''', is almost constantly flooded with porn and image macros. This is why Randall's incarnation of 4chan is roughly shaped like a penis.
*'''420chan''' and '''7chan''', other imageboards in the style of 4chan. Their relative lack of popularity and derivative nature leads a lot of 4chan users to mock them; hence, their position on Randall's map suggests that they're mere wads of semen.
*'''Encyclopedia Dramatica''', labeled '''ED''' on the map, is a wiki site dedicated to chronicling internet memes and other noteworthy sites, events, people, and anything else that catches their attention, generally in a very satirical manner. The site is heavily populated by 4chan users. Many people are offended by the articles and talks that go on in the wiki and forum, which is perhaps the reason that it appears to be represented as a wad of sperm. The image of sperm also makes sense since ED is used as a messaging center for the group "[https://en.wikipedia.org/wiki/Anonymous_(group) Anonymous]" which is represented in the map as part of the testicles of the 4chan island(see below at the gulf named Anonymous).
*'''Tunnel to Habbo''' is a reference to [http://knowyourmeme.com/memes/pools-closed the 2006 Habbo Hotel Raids], in which hundreds of 4chan Anons simultaneously logged onto Habbo Hotel and proceeded to be as obnoxious as possible, standing in formations of swastikas and penises or body-blocking the swimming pools.
*'''{{w|Catbus}} Route''' is likely a reference to {{w|Lolcat}}s in general.
*'''[http://www.ebaumsworld.com/ eBaum's World]''' is a media-hosting website founded by Eric Bauman. The site has lost a lot of traffic after (quite valid) accusations of stolen content.
*The gulf labelled '''{{w|Anonymous (group)|Anonymous}}''' is most likely a reference to the leaderless, anonymous international network called "[https://en.wikipedia.org/wiki/Anonymous_(group) Anonymous]" which is composed of (mainly) anarchic activist hackers. Anonymous was created on the /b/ messaging board of 4chan, hence why the bay of Anonymous is on the coast of /b/. Also, the fact that the bay is in the "testicles"(/b/) of the 4chan island "penis" is referring to how Anonymous was created on 4chan, in the same way that sperm is created in the testicles of a penis, possibly a subtle jab at the group.

To the south and east is an archipelago of islands representing various regional and special-interest forums. Moving clockwise from 4chan island is
* '''Storm 2K''' is an online website hosting information on tropical cyclones and tools for tracking them, and has a forum with multiple categories and threads for discussion on tropical cyclones, as well as multiple tropical cyclone models and reconnaissance information.
* '''Skyscraper city''' is an internet forum website for skyscraper hobbyists and enthusiasts.
* An island containing two websites related to women, namely
** '''Wizaz.pl''' is a Polish website, presumably for women, with a forum filled with discussions mainly about beauty, health, women, hobbies, and fun.
** '''Baby and bump''' is a self-described "pregnancy forum, baby and parenting community."
An island contaning
** '''ForoCoches''' is a very popular Spanish (as in from Spain) forum mainly about automobiles, but holds discussions on virtually any topic.
** '''Bodybuilding.com''' is(as you can hopefully tell) a website for bodybuilders. It contains a forum for general discussions on bodybuilding that includes topics such as supplements, exercises, and nutrition.
** '''Bokt.nl''' calls itself the largest community on the topic of horses. A Dutch website, it holds topics about virtually anything involving horses.
** '''Cruise Critic''' is a website with a large forum about cruises in general.
* '''Lay it low''' is a website for discussing lowriding(changing a car so that its ground clearance go lower than the clearance of the original design from the manufacturer.
* '''[http://www.twoplustwo.com/ Two plus two]''' is a poker & gambling forum
* An island containing:
** '''Fan forum'''
** '''[http://www.facethejury.us/ Face the jury]''' is an online forum, originally founded for users to upload pictures of themselves to be judged by other users
** A smaller nearby island is '''Datalounge'''
* An island containing gaming-related sites
** '''D2JSP'''
** '''EA UK'''
** '''Gametrailers'''
* Smaller islands next to the D2JSP island are
** '''Steam powered'''
** '''World of players'''
** '''Nedgaf'''
** '''Overclock'''
* A smaller island of regional and special-interest forums:
** '''[http://digitalspy.com/ Digital Spy]''', a British media and entertainment news service
** '''[http://www.onliner.by/ onliner.by]''', a Belarusian digital technology forum
** Zona Ford
** '''[http://lowyat.net/ lowyat]''', a large Malaysian technology forum
** exbil
** '''[http://www.macrumors.com/ MacRumors]''', an Apple news and discussion site
** Adjacent to this, an island labelled '''[http://forums.whirlpool.net.au/ Whirlpool Forums]''', a large Australian broadband and technology forum. The drawing reflects Australia being an island continent separated from other countries.
* An island made up of several European forums:
** '''[http://www.jlaforums.com/ JLA Forums]'''
** '''[http://www.fok.nl/ fok.nl]''', a Dutch forum site that is one of the largest internet communities in the Netherlands
** '''[http://www.thestudentroom.co.uk/ The Student Room]''', a British forum and wiki for secondary and tertiary students
** '''[http://www.boards.ie/ boards.ie]''' "Now Ye're talking", a popular Irish forum site
** '''[http://www.forum.hr/ forum.hr]''', a Croatian forum
** '''rus-chat''', possibly a reference to [http://rus-chat.de/ rus-chat.de]
* The largest single-site island is [http://www.somethingawful.com/ SomethingAwful], a website that is meant to showcase all things "awful". SomethingAwful also has a large trollbase, but they tend to be more honorable than the ones from Encyclopedia Dramatica and 4chan. One example is there being a spotty holding of the no-furries rule in the forums. The forums themselves are famous because of the holding of the Let's Plays of [http://lparchive.org/Dangan-Ronpa/ Dangan Ronpa] and [http://danganronpa2mirror.tumblr.com/ Super Dangan Ronpa 2], which had cooked up public interest to the point of there being an English-language release of the games. (Note that, due to these Let's Plays being in a forums that frequently hides behind a "paywall" that requires a paid account before accessing, the links provided go to their mirrors.)

==Transcript==
:'''Map of Online Communities'''
:Size on map represents volume of Daily Social activity (posts, chat, etc). Based on data gathered over the Spring and Summer of 2010.

:[Two insets on the upper left-hand corner shows that this map is a tiny portion of the huge continent of Spoken Language, encompassing portions of the Internet, Email, and Cell Phones (SMS).]

:[The largest landmass on the map by far, which takes up nearly the entire northern half of the map is "Facebook" - with large states in the south-east of the country labeled 'Farmville' and 'Happy Farm'. There is a much smaller state to the west of these called 'Farm Town'. To the north of these states is a large swath of unremarkable land entitled 'Northern Wasteland of Unread Updates.' This is directly north of the large Dopamine Sea.

:A peninsula on the south-west, just below the Plains of Awkwardly Public Family Interactions, houses many tiny states, such as MySpace, Orkut, LinkedIn, Bebo, & Hi5. It is bordered on the south by Buzzword Bay, which contains several islands of varying sizes. Among these are YouTube and Twitter (the largest), which are separated by the Social Media Consultant Channel. To the south-east of Twitter, across the Sea of Protocol Confusion, is another, equally large island. Most of it is Skype, with the north having two largish states called AIM and Windows Live Messenger. On the south-west part of the island are two smaller states called GG and Yahoo Messenger.

:The Island of Skype is extremely close to, but separated by the Great Firewall (a dashed line), the large landmass of QQ. It's north shore is the Gulf of China and Grass Mud Horse Bay. Outside of these bays, over the Great Firewall are two islands called Craigslist and 2Channel.

:In the Dopamine Sea, off the southern shores of Farmville and Happy Farm, is MMO Isle. Its largest state is WoW, with Runescape, Lineage, Maple Story, Habbo, and the Mountains of Steam among its notable landmarks. To the southeast of the island is the Gulf of Lag, in which sits the CDC Games island, with Eve Online.

:To the east of Twitter is Troll Bay, with such islands as Reddit and Reddit, Digg, Stumbleupon, Delicio.us, and Wikipedia Talk Pages. To their south are the IRC isles, of which one is the tiny island of #xkcd.

:East of these islands, and north of Skype island, is the Sea of Memes. In this sea, to the north of Craigslist and 2Channel, is an archipelago of tiny islands. There is an inset, labeled 'Forums.' (See below.)

:To the southwest of Twitter island, in the Sea of Opinions, are the blog islands. These lie south of the islands in Buzzword Bay, as well. The northernmost islands in this group are centered around the Bay of Drama, on which can be found Diary Blogs, Gossip Blogs, and Livejournal. Gossip Blogs share an island with Political, Music, and Tech Blogs. To the north of this island is a smaller island called Photo Blogs. South of Diary Blogs, and off the southwest coast of Music blogs is a smaller island called Fandom Blogs. South of Tech Blogs, off of which sprouts the small peninsula of Business Blogs, is the Spamblog Straits. On the other side of the straits is a large island made up of Miscellaneous Blogs, with two states demarcated as Religious Blogs and Blog Blogs. Southwest of the Blog Islands is the Sea of Zero (0) Comments.]

:[An inset of a group of islands in the sea of memes located on the lower right corner of the map, labeled 'Forums'. The largest by far is 4chan and /b/. Also found here are D2JSP, JLA Frums, Fan Forum, Something Awful, and many smaller ones, too numerous to list here.]

:[The northeastern third of Gossip/Political/Tech Blogs island is another inset labeled 'Blogosphere (Core)'. This can be found on the lower left corner of the map. Two peninsulas in Political Blogs bookend the Bay of Flame -- these are Liberal Blogs and Conservative Blogs. Between them lie several tiny islands such as Politics Daily, CNN Politcal Ticker, and Mediaite. Off the coast of Liberal Blogs lies the island of NYTimes, off the coast of Conservative Blogs is Libertarian Isle. Between the two lies The Talk. The northern peninsula of Tech Blogs contains places such as Gizmodo, Engadget, Joystiq, and Kotaku.]

:[Text found between the two insets, which are directly below the main map.]
:ABOUT THIS MAP
:Communities rise and fall, and total membership numbers are no longer a good measure of a community's current size and health. This updated map uses size to represent total social activity in a community -- that is, how much talking, playing, sharing, or other socializing happens there. This meant some comparing of apples and oranges, but I did my best and tried to be consistent.

:Estimates are based on the numbers I could find, but involved a great deal of guesswork, statistical inference, random sampling, nonrandom sampling, a 20,000-cell spreadsheet, emailing, cajoling, tea-leaf reading, goat sacrifices, and gut instinct (i.e. making things up).

:Sources of data include Google and Bing, Wikipedia, Alexa, Big-Boards.com, StumbleUpon, Wordpress, Akismet, every website statistics page I could find, press releases, news articles, and individual site employees. Thanks in particular to folks at Last.fm, LiveJournal, Reddit, and the New York Times, as well as sysadmins at a number of sites who shared statistics on condition of anonymity.

==Trivia==
*A print version of this comic is available in the [https://store.xkcd.com/products/online-communities-poster xkcd store].

{{comic discussion}}

[[Category:Online Communities]]
[[Category:Comics sharing name|Online Communities]]
[[Category:Comics with color]]
[[Category:Large drawings]]
[[Category:Internet]]
[[Category:Rickrolling]]
[[Category:Comics with xkcd store products]]

1331: Frequency

2022-05-11T18:01:23Z

BetaOS: Undo revision 267140 by 👖🔥 (talk)

{{comic
| number = 1331
| date = February 17, 2014
| title = Frequency
| custom = <center><table title="This comic shows estimated average frequency. I wanted to include the pitch drop experiment, but it turns out the gif format has some issues with decade-long loops."><tr>
<td>[[File:heartbeat.gif]]</td>
<td>[[File:birth.gif]]</td>
<td>[[File:death.gif]]</td>
<td>[[File:wikipedia.gif]]</td>
<td>[[File:vibrator.gif]]</td>
</tr><tr>
<td>[[File:car china.gif]]</td>
<td>[[File:car japan.gif]]</td>
<td>[[File:car germany.gif]]</td>
<td>[[File:car us.gif]]</td>
<td>[[File:car elsewhere.gif]]</td>
</tr><tr>
<td>[[File:kiss.gif]]</td>
<td>[[File:fire dept.gif]]</td>
<td>[[File:holeinone.gif]]</td>
<td>[[File:turnsignal1.gif]]</td>
<td>[[File:turnsignal2.gif]]</td>
</tr><tr>
<td>[[File:earthquake1.gif]]</td>
<td>[[File:earthquake2.gif]]</td>
<td>[[File:earthquake3.gif]]</td>
<td>[[File:earthquake4.gif]]</td>
<td>[[File:parliament toilet.gif]]</td>
</tr><tr>
<td>[[File:flight.gif]]</td>
<td>[[File:book mockingbird.gif]]</td>
<td>[[File:cat mockingbird.gif]]</td>
<td>[[File:phoenixshoes.gif]]</td>
<td>[[File:phoenix.gif]]</td>
</tr><tr>
<td>[[File:keys.gif]]</td>
<td>[[File:amelia.gif]]</td>
<td>[[File:dogbite.gif]]</td>
<td>[[File:bike.gif]]</td>
<td>[[File:eagle.gif]]</td>
</tr><tr>
<td>[[File:bottles.gif]]</td>
<td>[[File:recycled.gif]]</td>
<td>[[File:meteor.gif]]</td>
<td>[[File:oldfaithful.gif]]</td>
<td>[[File:shark.gif]]</td>
</tr><tr>
<td>[[File:us cancer.gif]]</td>
<td>[[File:us cancer death.gif]]</td>
<td>[[File:dog.gif]]</td>
<td>[[File:cat.gif]]</td>
<td>[[File:wedding.gif]]</td>
</tr><tr>
<td>[[File:domain.gif]]</td>
<td>[[File:house.gif]]</td>
<td>[[File:tattoo.gif]]</td>
<td>[[File:pulsar.gif]]</td>
<td>[[File:facebook.gif]]</td>
</tr><tr>
<td>[[File:iphone.gif]]</td>
<td>[[File:littleleague.gif]]</td>
<td>[[File:ndsex.gif]]</td>
<td>[[File:bieber.gif]]</td>
<td>[[File:denverpizza.gif]]</td>
</tr></table></center>
| titletext = This comic shows estimated average frequency. I wanted to include the pitch drop experiment, but it turns out the gif format has some issues with decade-long loops.
}}

==Explanation==
This comic shows a number of common events, arranged in a grid. Each of the events flashes with its average frequency.

For example, statistically a child is born somewhere on the world approximately every 0.24 seconds, or four times per second. Therefore, the tile "One birth" blinks about 4 times per second.

The title text refers to the {{w|Pitch drop experiment}} which measures the flow of a piece of pitch over many years. At room temperature, tar pitch flows at a very slow rate, taking several years to form a single drop. The title text jokes that Randall tried to include a tile that flashes about once every {{w|decade|ten years}}, but the tiles are all {{w|Animated GIF|animated GIFs}} and while the file format supports animations of any length, the resulting file would be too big (at least 10 megabytes).

A thorough analysis of the frequencies present in this comic and how they relate to the underlying technology (the GIF format) was published as [http://notebooks.jsvine.com/reverse-engineering-xkcd-frequency/ Reverse Engineering xkcd's 'Frequency'].

The table below lists all the events and their duration / frequency. Some events make reference to other comics.

===Events===
{| class="wikitable sortable"
!class="unsortable"|Picture
!class="unsortable"|Text
!Period (seconds)
!Frequency (per minute)
!Frequency (per year)
!class="unsortable"|Explanation and/or references to other comics.
|-
|[[File:heartbeat.gif]]
|Heartbeat||style="text-align:right;"|0.86||style="text-align:right;"|70||style="text-align:right;"|33,000,000||The typical resting {{w|heart rate}} in adults is 60–80 beats per minute (bpm).
|-
|[[File:birth.gif]]
|One birth||style="text-align:right;"|0.24||style="text-align:right;"|250||style="text-align:right;"|131,490,000||The {{w|Birth rate|birth rate}} that occurs on Earth.
|-
|[[File:death.gif]]
|One death||style="text-align:right;"|0.56||style="text-align:right;"|107||style="text-align:right;"|56,360,000||The {{w|Mortality rate|Mortality rate}} is much lower than the birth rate shown above; thus, the world's population continues to increase. (Mass deaths not included.)
|-
|[[File:wikipedia.gif]]
|Someone edits Wikipedia||style="text-align:right;"|0.67||style="text-align:right;"|90||style="text-align:right;"|47,100,000||{{w|Wikipedia}} is an online, freely editable encyclopedia. A table recording the time between completion of each block of 10 million edits can be found [http://en.wikipedia.org/wiki/User:Katalaveno/TBE here], which suggests that the value 0.67 Sec/Edit is a little high, with the average being closer to 0.63 Sec/Edit.
|-
|[[File:vibrator.gif]]
|Someone buys a vibrator||style="text-align:right;"|2.99||style="text-align:right;"|20||style="text-align:right;"|10,550,000 || This is just a joke; there are no reliable statistics on worldwide vibrator productions or sales.
|-
|[[File:car china.gif]]
|China builds a car||style="text-align:right;"|1.89||style="text-align:right;"|32||style="text-align:right;"|16,700,000|| According to the International Organization of Motor Vehicle Manufacturers, China is the world's most prolific car manufacturer, producing just over [http://www.oica.net/category/production-statistics/2013-statistics/ 18 million cars in 2013].
|-
|[[File:car japan.gif]]
|Japan builds a car||style="text-align:right;"|4.01||style="text-align:right;"|15||style="text-align:right;"|7,870,000|| According to the International Organization of Motor Vehicle Manufacturers, Japan is the second most prolific car manufacturing country, producing just over [http://www.oica.net/category/production-statistics/2013-statistics/ 8 million cars in 2013].
|-
|[[File:car germany.gif]]
|Germany builds a car||style="text-align:right;"|5.8||style="text-align:right;"|10||style="text-align:right;"|5,440,000|| According to the International Organization of Motor Vehicle Manufacturers, Germany is the third most prolific car manufacturing country, producing nearly [http://www.oica.net/category/production-statistics/2013-statistics/ 5.5 million cars in 2013].
|-
|[[File:car us.gif]]
|The US builds a car||style="text-align:right;"|6.95||style="text-align:right;"|8.6||style="text-align:right;"|4,540,000|| According to the International Organization of Motor Vehicle Manufacturers, the US is the fourth most prolific car manufacturing country, producing just under [http://www.oica.net/category/production-statistics/2013-statistics/ 4.4 million cars in 2013].
|-
|[[File:car elsewhere.gif]]
|Someone else builds a car||style="text-align:right;"|1.03||style="text-align:right;"|58||style="text-align:right;"|30,640,000|| This relates to car manufacture in countries other than those four listed above. According to the International Organization of Motor Vehicle Manufacturers, this total is just under [http://www.oica.net/category/production-statistics/2013-statistics/ 29.4 million cars in 2013].
|-
|[[File:kiss.gif]]
|A European Union resident has their first kiss||style="text-align:right;"|5.53||style="text-align:right;"|11||style="text-align:right;"|5,700,000|| Given that each person can only have their first kiss once, this statistic is tied to the EU birth rate. This [http://epp.eurostat.ec.europa.eu/statistics_explained/index.php/File:Number_of_live_births,_EU-28,_1961%E2%80%932012_(1)_(million)_YB14.png eurostat graph] shows the birth rate in the EU, and if we assume that the majority of people experience their first 'real' kiss at around age 12-16, then the years 1998-2002 are of interest, where the birth rate is fairly stable at just over 5.5 million.
|-
|[[File:fire dept.gif]]
|A US fire department puts out a fire||style="text-align:right;"|23||style="text-align:right;"|2.6||style="text-align:right;"|1,370,000|| The latest available statistics from the US Fire Administration show that in 2011 there were [http://www.usfa.fema.gov/data/statistics/ roughly 1.39 million] reported fires.
|-
|[[File:holeinone.gif]]
|Someone hits a hole-in-one||style="text-align:right;"|180 (3 minutes)||style="text-align:right;"|⅓ (20 per hour)||style="text-align:right;"|175,320||A {{w|hole in one}} is a feat in {{w|golf}} in which the player hits the ball directly from the tee into the cup with one shot. This does not account for the possibility of [https://what-if.xkcd.com/85/ Rocket Golf].
|-
|[[File:turnsignal1.gif]]
|My turn signal blinks||style="text-align:right;"|0.94||style="text-align:right;"|64||style="text-align:right;"|33,638,400||This, together with "The turn signal of the car in front of me blinks", forms a reference to [[165: Turn Signals]].
|-
|[[File:turnsignal2.gif]]
|The turn signal of the car in front of me blinks||style="text-align:right;"|0.9||style="text-align:right;"|67||style="text-align:right;"|35,215,200||This, together with "My turn signal blinks", forms a reference to [[165: Turn Signals]].
|-
|[[File:earthquake1.gif]]
|Earthquake (magnitude 1)||style="text-align:right;"|2.43||style="text-align:right;"|25||style="text-align:right;"|13,000,000||These are continually happening, and not felt by humans. The [http://earthquake.usgs.gov/earthquakes/map/#%7B%22feed%22%3A%221419026358584%22%2C%22sort%22%3A%22newest%22%2C%22mapposition%22%3A%5B%5B-85%2C0%5D%2C%5B85%2C360%5D%5D%2C%22viewModes%22%3A%7B%22help%22%3Afalse%2C%22list%22%3Atrue%2C%22map%22%3Atrue%2C%22settings%22%3Afalse%7D%2C%22autoUpdate%22%3Afalse%2C%22search%22%3A%7B%22id%22%3A%221419026358584%22%2C%22name%22%3A%22Search%20Results%22%2C%22isSearch%22%3Atrue%2C%22params%22%3A%7B%22starttime%22%3A%222014-12-12%2000%3A00%3A00%22%2C%22minmagnitude%22%3A-1%2C%22eventtype%22%3A%22earthquake%22%2C%22endtime%22%3A%222014-12-19%2023%3A59%3A59%22%2C%22maxmagnitude%22%3A1.9%2C%22orderby%22%3A%22time%22%7D%7D%7D USGS does report them], but the link provided was produced at the time this description was written. It can however be updated by the user.
|-
|[[File:earthquake2.gif]]
|Earthquake (magnitude 2)||style="text-align:right;"|24.26||style="text-align:right;"|2.5||style="text-align:right;"|1,300,000|| The US Geological Survey estimates that [http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php 1.3 million] earthquakes of magnitude 2.0-2.9 occur worldwide each year.
|-
|[[File:earthquake3.gif]]
|Earthquake (magnitude 3)||style="text-align:right;"|242.6 (~4 minutes)||style="text-align:right;"|¼ (15 per hour)||style="text-align:right;"|130,000|| The US Geological Survey estimates that [http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php 130 thousand] earthquakes of magnitude 3.0-3.9 occur worldwide each year.
Earthquakes below this magnitude pass by largely unnoticed by most people (or [[723|tweeters]]).
|-
|[[File:earthquake4.gif]]
|Earthquake (magnitude 4)||style="text-align:right;"|2426 (40.4 minutes)||style="text-align:right;"|0.025 (1.5 per hour)||style="text-align:right;"|13,000|| The US Geological Survey estimates that [http://earthquake.usgs.gov/earthquakes/eqarchives/year/eqstats.php 13 thousand] earthquakes of magnitude 4.0-4.9 occur worldwide each year.
|-
|[[File:parliament toilet.gif]]
|A member of the UK parliament flushes a toilet||style="text-align:right;"|10.06||style="text-align:right;"|6||style="text-align:right;"|3,140,000||At the time of this comic, there were 650 elected MPs and in the UK parliament, resulting in an average of 13.2 flushes per MP per day, which would mean that supposing that MPs get up to go to the toilet once between midnight and 6am, that means that during the rest of the day they are averaging a trip to the toilet every hour and a half. It appears that Randall included the unelected Lords in the upper house of Parliament (not technically called Members of Parliament), which numbered around 780 at the time of the comic. In that case, that averages a slightly more reasonable 6 flushes per Parlimentarian per day.
|-
|[[File:flight.gif]]
|An airline flight takes off||style="text-align:right;"|0.93||style="text-align:right;"|65||style="text-align:right;"|34,000,000|| Research conducted in 2008 by Thomas Ruosch and Dr Karl Rege at [http://www.init.zhaw.ch/index.php?id=9&L=1 Zurich University of Applied Science] plotted the [https://www.youtube.com/watch?v=oR00_uLfGVE 93,000 daily worldwide airline flights].
|-
|[[File:book mockingbird.gif]]
|Someone buys ''To Kill a Mockingbird''||style="text-align:right;"|42.05||style="text-align:right;"|1.4||style="text-align:right;"|750,000||"{{w|To Kill a Mockingbird}}" is a novel by {{w|Harper Lee}}, often an assigned reading in high school. Since 1960 it has sold in the region of [http://www.theguardian.com/books/2010/jul/09/harper-lee-to-kill-a-mockingbird 40 million copies], an average of 740,000 a year.
|-
|[[File:cat mockingbird.gif]]
|Someone's pet cat kills a mockingbird||style="text-align:right;"|1.82||style="text-align:right;"|33||style="text-align:right;"|17,340,000||Whereas the previous item references the well-known book "To Kill a Mockingbird", this one talks about {{w|Mockingbird|mockingbirds}} being literally killed (in this case, by cats). [http://animaldiversity.ummz.umich.edu/accounts/Mimus_polyglottos/ There are 45 million mockingbirds in the world;] this means that according to Randall, cats kill 39% of mockingbirds in one year, i.e. in 2.5 years they are able to kill all mockingbirds (excluding the ones that are born in the meantime).
|-
|[[File:phoenixshoes.gif]]
|Someone in Phoenix buys new shoes||style="text-align:right;"|1.08||style="text-align:right;"|56||style="text-align:right;"|29,200,000||Since {{w|Phoenix metropolitan area|metro Phoenix}} has 4,200,000 inhabitants, according to Randall people in Phoenix buy 7 pairs of shoes per capita per year.
|-
|[[File:phoenix.gif]]
|Someone in Phoenix puts on a condom||style="text-align:right;"|2.05||style="text-align:right;"|29||style="text-align:right;"|15,390,000||Randall probably found the number of Condoms sold in Phoenix and estimated that most of those would be used. Estimates directly from the frequency of intercourse and contraceptive uses would be wildly inaccurate, especially as those statistics count encounters that might need multiple condoms as one instance of intercourse. There are [https://www.birthcontrol.com/condom-use-statistics 450,000,000 Condoms sold in the US each Year.]
|-
|[[File:keys.gif]]
|Someone locks their keys in their car||style="text-align:right;"|2.43||style="text-align:right;"|25||style="text-align:right;"|13,000,000||There does not appear to be any data on this mishap, but a [https://twitter.com/search?q=locked%20keys%20in%20car&src=typd Twitter search] reveals this happens, or people discuss it happening at a high frequency.
|-
|[[File:amelia.gif]]
|A Sagittarius named Amelia drinks a soda||style="text-align:right;"|7.79||style="text-align:right;"|7.7||style="text-align:right;"|4,000,000||Randall Munroe is a [http://blog.xkcd.com/2014/01/31/the-baby-name-wizard/ fan of The Baby Name Wizard] blog and its [http://www.babynamewizard.com Name Voyager] tool which shows that "[http://www.babynamewizard.com/baby-name/girl/amelia Amelia]" has recently exploded in popularity. 
This particular frequency is taken from:
* The number of persons called {{w|Amelia (given name)|Amelia}} ([http://howmanyofme.com/ est. 82,572 people in the U.S.])
* The number of persons born between November 22 and December 22 under the astrological sign of {{w|Sagittarius (astrology)|Sagittarius}} (~1/12th of the population, i.e. approximately 6881 Amelias in the U.S.)
* The frequency of soda (soft drinks) being drunk ([http://www.nationmaster.com/graph/foo_sof_dri_con-food-soft-drink-consumption 216 liters per person per year in the U.S.]).
According to our figures, 6881 Amelias drink 1.44 million liters of soft drinks per year in the United States alone, which means that Randall's figures only account for American Amelias (drinking 355 mL or 12 fl. oz. of soda in each drink).
|-
|[[File:dogbite.gif]]
|A dog bites someone in the US||style="text-align:right;"|7.01||style="text-align:right;"|8.6||style="text-align:right;"|4,500,000|| A [http://www.ncbi.nlm.nih.gov/pubmed/18836045 2008 report] by the Centers for Disease Control concluded that 4.5 million people are bitten by dogs each year.
|-
|[[File:bike.gif]]
|Someone steals a bicycle||style="text-align:right;"|24.93||style="text-align:right;"|2.4||style="text-align:right;"|1,265,000||About half of all people who cycle infrequently have their bikes stolen at some time, but people who cycle every day have a 90% higher chance of bike theft, all according to [http://www.citylab.com/commute/2014/04/these-8-depressing-bike-theft-statistics-show-just-how-bad-problem/8890/ this report] of cyclists in Montreal.
|-
|[[File:eagle.gif]]
|A bald eagle catches a fish||style="text-align:right;"|2.69||style="text-align:right;"|22||style="text-align:right;"|11,700,000||It is estimated that there are 70,000 bald eagles in the world and they eat up to [http://www.hancockwildlife.org/forum/viewtopic.php?showtopic=949 a pound-and-a-half of fish] every day.
|-
|[[File:bottles.gif]]
|50,000 plastic bottles are produced||style="text-align:right;"|1.27||style="text-align:right;"|47||style="text-align:right;"|1.24 trillion||This fact speaks for itself, but here are some [http://www.banthebottle.net/bottled-water-facts/ alarming facts] about plastic bottle production and usage.
|-
|[[File:recycled.gif]]
|50,000 plastic bottles are recycled||style="text-align:right;"|4.64||style="text-align:right;"|13||style="text-align:right;"|340 billion||27% of the plastic bottles manufactured get [[885: Recycling|recycled]]
|-
|[[File:meteor.gif]]
|A bright meteor is visible somewhere||style="text-align:right;"|1.15||style="text-align:right;"|52||style="text-align:right;"|27,400,000||This varies based on location, time of day, time of year, weather, personal perception and a number of other factors, but according to [http://www.amsmeteors.org/meteor-showers/meteor-faq/#4 The American Meteor Society], between 2-16 can be seen during the hours before daylight where it would be too bright to see them.
|-
|[[File:oldfaithful.gif]]
|Old Faithful erupts||style="text-align:right;"|5640 (94 minutes)||style="text-align:right;"|0.011 (15 per day)||style="text-align:right;"|5,595||{{w|Old Faithful}} is a geyser in {{w|Yellowstone National Park}} in the US, that tends to erupt every 65 or 91 minutes. XKCD's period of 1h 34m falls between the [https://geysertimes.org/geyser.php?id=Old%20Faithful mean and median of recent Old Faithful eruptions] and corresponds to a [http://geysertimes.org/getSingleEruption.php?id=645135 February 16, 2014 eruption].
|-
|[[File:shark.gif]]
|A fishing boat catches a shark||style="text-align:right;"|0.83||style="text-align:right;"|72||style="text-align:right;"|38,000,000|| [[1326: Sharks]]; Shark populations have experienced severe declines due to fishing impacts both of {{w|shark finning|finning}} and by-catch.
|-
|[[File:us cancer.gif]]
|Someone in the US is diagnosed with cancer||style="text-align:right;"|18.99||style="text-align:right;"|3.2||style="text-align:right;"|1,660,000|| According to the [http://www.cancer.org American Cancer Society], there will be an estimated 1,665,540 new cancer cases diagnosed in the US in 2014.
|-
|[[File:us cancer death.gif]]
|Someone in the US dies from cancer||style="text-align:right;"|54.34||style="text-align:right;"|1.1||style="text-align:right;"|580,000|| According to the [http://www.cancer.org American Cancer Society], in 2014 there will be an estimated 585,720 cancer deaths in the US.
|-
|[[File:dog.gif]]
|Someone adopts a dog from a shelter||style="text-align:right;"|15.6||style="text-align:right;"|3.8||style="text-align:right;"|2,000,000||[http://www.statisticbrain.com/pet-owner-industry-stats/ 10%] of owned dogs were adopted from shelters
|-
|[[File:cat.gif]]
|Someone adopts a cat from a shelter||style="text-align:right;"|21.3||style="text-align:right;"|2.8||style="text-align:right;"|1,500,000||[http://www.statisticbrain.com/pet-owner-industry-stats/ 18%] of owned cats were adopted from shelters
|-
|[[File:wedding.gif]]
|Someone gets married||style="text-align:right;"|0.75||style="text-align:right;"|80||style="text-align:right;"|42,000,000||According to [http://www.statisticbrain.com/marriage-statistics/ this study], there are 2,077,000 marriages in the US every year.
|-
|[[File:domain.gif]]
|Someone registers a domain||style="text-align:right;"|0.64||style="text-align:right;"|94||style="text-align:right;"|49,300,000 ||According to [http://www.dailychanges.com/ Dailychanges.com], about 135,000 domains are registered every day, but this figure fluctuates.
|-
|[[File:house.gif]]
|Someone in the US buys a house||style="text-align:right;"|6.22||style="text-align:right;"|9.6||style="text-align:right;"|5,000,000||According to [http://www.census.gov/construction/nrs/pdf/newressales.pdf The Census Bureau], on average there are 400,000 home purchases in the US each month.
|-
|[[File:tattoo.gif]]
|Someone in the US gets a tattoo||style="text-align:right;"|2.06||style="text-align:right;"|29||style="text-align:right;"|15,300,000||This estimate is probably based on the percentage of people who are tattooed, and not how frequently they purchase one, but the figures [http://theweek.com/article/index/233633/the-tattoo-economy-by-the-numbers here], [http://www.vanishingtattoo.com/tattoo_facts.htm here], and [http://www.statisticbrain.com/tattoo-statistics/ here] add to the credibility of the claim.
|-
|[[File:pulsar.gif]]
|The star PSR J1748-2446AD rotates 1,000 times||style="text-align:right;"|1.4||style="text-align:right;"|42.9||style="text-align:right;"|22,548,240, which means 22.5 billion times per year||{{w|PSR J1748-2446ad}} is the fastest spinning {{w|pulsar}} known.
|-
|[[File:facebook.gif]]
|Someone lies about their age to sign up for Facebook||style="text-align:right;"|4.32||style="text-align:right;"|14||style="text-align:right;"|7,300,000||To sign up for Facebook, [https://www.facebook.com/help/210644045634222 the user must claim to be at least 13 years old]. This is a reflection of the U.S. {{w|Children's Online Privacy Protection Act}}.
|-
|[[File:iphone.gif]]
|Someone breaks an iPhone screen||style="text-align:right;"|0.93||style="text-align:right;"|65||style="text-align:right;"|34,000,000||According to a [http://www.cnet.com/news/quarter-of-iphones-have-a-broken-screen-says-new-poll/ CNET report], up to a quarter of iPhones have a broken screen.
|-
|[[File:littleleague.gif]]
|A Little League player strikes out||style="text-align:right;"|1.23||style="text-align:right;"|49||style="text-align:right;"|25,754,400||{{w|Little League Baseball|Little League}} is a system of local youth baseball and softball competitions. A {{w|strikeout}} is a situation in baseball and softball. This figure will be inconsistent throughout the year as baseball is normally not played in the winter.
|-
|[[File:ndsex.gif]]
|Someone has sex in North Dakota||style="text-align:right;"|1.38||style="text-align:right;"|43||style="text-align:right;"|22,900,000||Since {{w|North Dakota}} has 723,000 inhabitants (ranked the 48th state), and if we estimate the sexually active population as 80% (and if ''someone'' means ''a couple)'' this means that people in North Dakota have sex 79.1 times a year. It is estimated that [http://geography.about.com/od/culturalgeography/a/geographyofsex.htm 3.93% of the world population has sex on a given day;] Randall's rate for North Dakota is 17.3% which is not low.
|-
|[[File:bieber.gif]]
|Justin Bieber gains a follower on Twitter||style="text-align:right;"|4.73||style="text-align:right;"|13||style="text-align:right;"|6,670,000|| [[802: Online Communities 2#Twitter Region|802: Online Communities 2]]; {{w|Justin Bieber}} is a Canadian pop music singer whose [https://twitter.com/justinbieber Twitter account] is extremely popular.
|-
|[[File:denverpizza.gif]]
|Someone in Denver orders a pizza||style="text-align:right;"|1.27||style="text-align:right;"|47||style="text-align:right;"|24,800,000|| In 2013, an estimated [http://www.statisticbrain.com/pizza-statistics/ 3 billion] pizzas were sold in the US. With a population of approximately 320 million, this is an average of just over 9 pizzas per person per year. According to the [http://quickfacts.census.gov/qfd/states/08/08031.html 2010 Census], the population of Denver was, rounded, 650,000. The frequency shown equates to over 38 pizzas per person per year, four times the national average. But counting the larger {{w|Denver metropolitan area}}, with a population of 2,890,000, the frequency shown equates to a much more reasonable 8.5 pizzas per person per year
|}

==Transcript==
:[Repetitive events are written in grey and arranged in a grid. Each statement pulses to black and then returns to grey at an interval characteristic of the named event.]

{| style="text-align:center;"
|- style="vertical-align: top; background-color:#eeeeee;"
|Heartbeat (0.86 sec)
|One birth (0.24 sec)
|One death (0.56 sec)
|Someone edits Wikipedia (0.67 sec)
|Someone buys a vibrator (2.99 sec)
|- style="vertical-align: top;"
|China builds a car (1.89 sec)
|Japan builds a car (4.01 sec)
|Germany builds a car (5.8 sec)
|The US builds a car (6.95 sec)
|Someone else builds a car (1.03 sec)
|- style="vertical-align: top; background-color:#eeeeee;"
|A European Union resident has their first kiss (5.53 sec)
|A US fire department puts out a fire (23 sec)
|Someone hits a hole-in-one (180 sec)
|My turn signal blinks (0.94 sec)
|The turn signal of the car in front of me blinks (0.9 sec)
|- style="vertical-align: top;"
|Earthquake (magnitude 1) (2.43 sec)
|Earthquake (magnitude 2) (24.26 sec)
|Earthquake (magnitude 3) (242.6 sec)
|Earthquake (magnitude 4) (2426 sec, 42 min)
|Member of the UK Parliament flushes a toilet (10.06 sec)
|- style="vertical-align: top; background-color:#eeeeee;"
|An airline flight takes off (0.93 sec)
|Someone buys ''To Kill a Mockingbird'' (42.05 sec)
|Someone's pet cat kills a mockingbird (1.82 sec)
|Someone in Phoenix buys new shoes (1.08 sec)
|Someone in Phoenix puts on a condom (2.05 sec)
|- style="vertical-align: top;"
|Someone locks their keys in their car (2.43 sec)
|A Sagittarius named Amelia drinks a soda (7.79 sec)
|A dog bites someone in the US (7.01 sec)
|Someone steals a bicycle (24.93 sec)
|A bald eagle catches a fish (2.69 sec)
|- style="vertical-align: top; background-color:#eeeeee;"
|50,000 plastic bottles are produced (1.27 sec)
|50,000 plastic bottles are recycled (4.64 sec)
|A bright meteor is visible somewhere (1.15 sec)
|Old Faithful erupts (5640 sec, 94 min)
|A fishing boat catches a shark (0.83 sec)
|- style="vertical-align: top;"
|Someone in the US is diagnosed with cancer (18.99 sec)
|Someone in the US dies from cancer (54.34 sec)
|Someone adopts a dog from a shelter (15.6 sec)
|Someone adopts a cat from a shelter (21.3 sec)
|Someone gets married (0.75 sec)
|- style="vertical-align: top; background-color:#eeeeee;"
|Someone registers a domain (0.64 sec)
|Someone in the US buys a house (6.22 sec)
|Someone in the US gets a tattoo (2.06 sec)
|The star ''PSR J1748-2446ad'' rotates 1,000 times (1.4 sec)
|Someone lies about their age to sign up for Facebook (4.32 sec)
|- style="vertical-align: top;"
|Someone breaks an iPhone screen (0.93 sec)
|A little league player strikes out (1.23 sec)
|Someone has sex in North Dakota (1.38 sec)
|Justin Bieber gains a follower on Twitter (4.73 sec)
|Someone in Denver orders a pizza (1.27 sec)
|}

{{comic discussion}}
[[Category:Comics with animation]]
[[Category:Charts]]
[[Category:Sharks]]
[[Category:Romance]]
[[Category:Cancer]]
[[Category:Sex]]
[[Category:Wikipedia]]
[[Category:Baseball]]

2596: Galaxies

2022-05-11T17:59:46Z

BetaOS: Undo revision 267138 by 👖🔥 (talk)

{{comic
| number = 2596
| date = March 21, 2022
| title = Galaxies
| image = galaxies.png
| titletext = I know it seems overwhelming, but don't worry; I'm sure most of them have only a few stars, and probably no planets.
}}

==Explanation==
{{Quote|Space is big. Really big. You just won't believe how vastly, hugely, mind-bogglingly big it is.|{{w|Douglas Adams}}|{{w|The Hitchhiker's Guide to the Galaxy}}}}

This is another comic with a [[:Category:Facts|Fact]], the second in a row of these fact comics to use an Astronomy fact.

Our best approximation of the number of {{w|galaxies}} in the {{w|observable universe}} is about 200 billion (2 × 1011). That's a lot of galaxies,{{citation needed}} and here [[Randall]] exemplifies this by showing a small circle and estimating that when the comic's picture is viewed at a typical arm's length, expanded to full screen on your typical smartphone, the circle contains roughly 50,000 galaxies (that means of course not the small circle itself, but the volume defined by the viewer's eye, that circle, and an onward conical extension into deep space — and simultaneously back in time — to the respective limits of the observable universe). Most of those far-away galaxies are undetectable by even our most powerful astronomical instruments today, and comparatively few could be seen (let alone positively identified as such) by the naked eye. For example, in the {{w|Hubble Deep Field}}, an image of a small region in the constellation Ursa Major, about 3,000 visible galaxies can be identified.

Measuring in the mid-point of the lines, the circle is about one fortieth of the width of the frame of the comic. The absolute circle size depends on the display resolution, size and mode, but it can reasonably be taken to be 1mm diameter, or 0.5mm radius, giving a total area π r2 or about π/4 square millimeters. You're probably holding the phone about a half a meter away from your eye. The surface area of a sphere is 4 π r2. With a radius of one-half meter, that comes out to be π square meters. Thus, the area of the circle is about 1/4000000 of the area of the sphere, 200 billion galaxies divided by 4 million is the 50,000 average mentioned in the cartoon. A similar mathematics was used for the comic [[1276: Angular Size]], in which the projective sphere was at the Earth's own radius and cross-sectional areas of objects were compared, rather than an approximate count of objects within a given angular spread.

While galaxies usually are between 3,000 to 300,000 {{w|light-years}} across and contain between 10^8 (100 million) and 10^14 (100 trillion) stars, most are so far away from the Earth (upwards of billions of light-years) that they are invisible to the naked eye, or even through most telescopes. When magnified across such vast distances, even something as small as a pinhole expands to huge sizes, easily able to fit tens of thousands of galaxies.

The premise of this comic is that although galaxies are giant, space is unimaginably big and contains a vast number of things. Randall is apparently overwhelmed by this, as shown in the caption: ''Astronomy Fact: There are too many galaxies''.

The title text is Randall reassuring his readers why not to worry of this overwhelming fact. He states that most galaxies only have few stars and probably no planets. However, as mentioned above each galaxy contains a huge amount of stars, and as evident from all his own comics about [[:Category:Exoplanets|exoplanets]], it is now clear that many of the stars in a galaxy also have planets orbiting them. Thus the number of stars and planets in that small circle is much more mind-bogglingly large, than the number of galaxies, and thus the reassurance is sarcasm.

In [[975: Occulting Telescope]] [[Cueball]] expresses a similar sentiment about the number of stars.

==Transcript==
:[An almost white panel with a caption at the top. Then a small circle, much smaller than for instance the letter O in the text is in the center of the panel. A bending arrow points to the circle and beneath the arrow is a caption.]
:Open this picture fullscreen on your phone and hold it at arm's length.
:There are 50,000 galaxies in this circle.

:[Caption below the panel:]
:Astronomy Fact: There are too many galaxies.

{{comic discussion}}

[[Category:Facts]]
[[Category:Astronomy]]

1802: Phone

2022-05-11T17:59:13Z

BetaOS: Undo revision 267146 by 👖🔥 (talk)

{{comic
| number = 1802
| date = February 22, 2017
| title = Phone
| image = phone.png
| titletext = [*disables social networking accounts*] [*social isolation increases*] Wait, why does this ALSO feel bad?
}}

==Explanation==

When someone asks you if you want to go for a walk they often expect to have a conversation, while enjoying both the exercise, the fresh air and the company. Thus any disturbance not related to the walk is not welcome. Going for a walk is often seen as a way to relax from all the daily stress, as it takes the walkers away from work and chores.

[[Cueball]] agrees to go for a walk, but not to all the associated expectations. His first instinct is to bring along his {{w|smartphone}}, though rather than call it such, he opts for a lengthy description detailing all the functions he intends to use. He describes the phone as a device that gives him a continuous ({{w|24/7 service|24/7}}) stream of information, much of which is often out of context. The stream contains people's opinions, context-free but scary news, and other random stimuli. Conspicuously, long-distance communication (ostensibly the primary function of a smartphone) is not listed. This may be a sign that Cueball is {{w|Mobile phone overuse|addicted to his phone}}.

The stream of opinions mentioned could be from news or bloggers but it could also just be from his friends on social media platforms. News stories that are shared on social media are often scary, which becomes even worse because news outlets are likely to use a title that exaggerates the topic to create a fear reaction. The random emotional stimuli could be from many things such as text messages/emails and pictures of kittens and babies on social network, and shared internet memes or viral videos. All things that could cause a quick shift in emotions.

As if all this was not enough, Cueball even says he will also take his spare battery, so he won't risk that his {{w|Web feed|constant feed}} could be interrupted, because he will not be able to recharge his phone during the walk. All in all, his choice and constant need for staying updated and being online violates all the usual expectations, that his friend could have expected from asking him out for a walk. [[Randall|Randall's]] fear of running out of power on his smartphone was earlier mentioned in [[1373: Screenshot]], where a low battery charge stresses him too much to realize it is someone else's screenshot, rather than his own phone that has a low charge. Since then he has made other references to his issue with low batteries in [[1872: Backup Batteries]] and [[1965: Background Apps]].

The title text shows it would be possible to take an action to avoid this feed. In the first bracket a person (could be Cueball or [[Randall]]) ''disables all his social networking accounts''. Most of his news feed will thus disappear. But this leads to the next bracket which states that such a choice would lead to ''increased social isolation'', since he will no longer be in contact with any of his online friends. In fact, today many people also get into contact with their "real" local friends through social media, so one might thus miss out on events like parties or get-togethers. In addition, his friends, not sharing his dislike for social media, may not understand his decision. All of this leads to the final sentence ''Wait, why does this ALSO feel bad?''

==Transcript==
:[Someone off-panel asks Cueball a question which he answers while walking to a small table with some items laying on it.]
:Off-panel voice: Wanna go for a walk?
:Cueball: Sure, just need to grab my device that feeds me a 24/7 stream of opinions, context-free scary world news, and random emotional stimuli.
:Cueball: Plus a spare battery so the feed won't be interrupted.

==Trivia==
*This clearly refers back to the main comic, thus saying that it also feels bad to have this constant stream of input, which could often be disturbing. So there is no good choice listed in the comic, because it is bad to be completely offline, but being online all the time is also bad. And it is hard to find the right balance. This problem with finding the right balance between two things is related to the recent [[1796: Focus Knob]], where one thing was following the news too much the other not at all. In that comic it was impossible to follow the news without it getting too much.
*A related comic was posted long ago with [[77: Bored with the Internet]]. In this comic Cueball go for a walk to escape the internet, only to be thinking about the next post to make once back online.
*This comic is also related to the recent comic [[1773: Negativity]], as both deal with the inability to escape the media during objectively peaceful pastimes. While in the former, the nature attacks Cueball with the types of comments he wishes to avoid, here, he brings along his phone even though it will ruin the goal of the walk he is going to take. Negativity seemed to be a kind of follow up on [[1761: Blame]] where Cueball feels sad because of all the bad things that are happening, typically that which could be described as scary news, which in that case was posted by his friends on {{w|Facebook}} so Cueball blames his friends. This comic thus, for the third time in about three month, express a dislike for online societies and its reaction to lots of bad news, also refereed in other comics during those three months. (See more on this [[Sad comics|here]].)
*This is the second comic in a row where having access to the internet on a smartphone while out walking is a major part of the plot, the first being [[1801: Decision Paralysis]], where Randall mentions how access to the internet when having two similar options to choose from can cause a decision paralysis while he researches the best option.
*Should not be confused with the other ''Phone comics'' from the [[:Category:xkcd Phones|xkcd Phone series]], but generally smartphones is a [[:Category:Smartphones|recurring subject]] on xkcd.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Social networking]]
[[Category:Smartphones]]

1614: Kites

2022-05-11T17:58:57Z

BetaOS: Undo revision 267145 by 👖🔥 (talk)

{{comic
| number = 1614
| date = December 9, 2015
| title = Kites
| image = kites.png
| titletext = [Dog returns with the end of a string in its mouth] [Voice drifts down from the sky] Kites are fun!
}}

==Explanation==
In this comic, we see [[Megan]] and [[Beret Guy]] both holding on to skyward lines. Megan's line is clearly connected to a {{w|kite}}, and she (like the reader) initially assumes that Beret Guy's line is as well -- only for it to be revealed that he is not holding a line for a kite, but instead the line goes up to a small dog. This move on [[Randall|Randall's]] part is known as a ''{{w|bait-and-switch}}'', a technique that relies on human intuition and pattern seeking in order to play a trick on the viewer. The 'switch' portion of the bait and switch comes with the added humor of an unconventional dog that flies/floats instead of walking on the ground, so the joke comes as a surprise and with little warning to the reader. It is also amusing that Beret Guy is interested in reeling the dog in and flying a kite when he could just continue "walking" his dog.

The title text reverses the joke, implying that rather than Beret guy returning to the park with a kite, his dog has returned to the park with Beret Guy flying in the air on the kite (hence he calls down from above that kites are fun).

Beret Guy is generally fond of unconventional approaches to standard conventional issues. It is unclear if he is somehow causing his dog to fly, or if the dog's flight is simply due to its tail wagging rapidly. However, Beret Guy is known to possess several [[:Category:Strange powers of Beret Guy|strange powers]], of which this could be yet another one. The title text suggests that he does have the ability to fly on the kite himself, and to direct his dog to control the kite as well.

The comic's title is the plural form for "kite". This may be to distinguish this comic from another earlier comic that used the singular form of the word as its title: [[235: Kite]], or just because at the end of this comic, there are two kites present. In the first ''Kite'' comic it was possible for [[Cueball]] to climb up the line of his kite, and he thus had the same ability as Beret Guy with a kite.

A kid looking like Megan is also [http://www.explainxkcd.com/wiki/images/a/ae/1608_0970x1077y_Kite_and_weird_bug.png seen with a kite] to the left in the game comic [[1608: Hoverboard]] from two weeks earlier; probably not a coincidence. In the same comic Beret Guy is [http://www.explainxkcd.com/wiki/images/2/21/1608_1020x1083y_Torpedoes_two_steps_above_Runner_with_Beret_Guy.png flying down from the sky on a torpedo]. Maybe he could just "fly" off before it hits and explodes...

This comic is similar to the [[1037:_Umwelt#Yo_Mama|"Yo Mama" panel]] in [[1037: Umwelt]], where dogs can float and thus need a ballast to be on the ground. It could also be a variation on the joke of walking around with a stiff leash and collar, thus presenting the illusion of walking an invisible dog.

Flying dogs is mentioned in the title text of [[1625: Substitutions 2]]. Although dogs is substituted instead of drones, there may be a reference to this flying dog here...

Beret Guy also has dogs in [[1922: Interferometry]], and it is possible that one of the dogs in that comic is the same as the one in this one.

==Transcript==
:[Zoom out of Megan holding on to a long line going up to a kite high up in he air. Beret Guy comes walking in from the right. He is also holding on to a line that goes up in the air with the same slope. But the top of it disappears outside the frame to the right.]

:[Zoom in on Megan standing with a roll with the rest of the line, and the line for her kite goes up in the air between her and Beret Guy who has now almost reached her. He is just holding on to the end of the line, with only a small part of the line hanging down below his hands.]
:Megan: I love kites.
:Beret Guy: Hey, Me too!

:[Beret Guy is looking up along his line and takes a better hold on the line.]
:Beret Guy: I'll go get mine, once I finish walking my dog!

:[Beret Guy begins pulling the line down, rolling it up in one hand, while pulling at it with the other. The line vibrates under this extra tension, shown with lines above and below the line.]
:Beret Guy: C'mon boy!

:[In a drawing without a frame around it, Beret Guy has pulled in his flying dog (a small white dog with black ears). It still hangs just above head height, wagging its tail happily. The line has now been rolled up and hangs from one of Beret Guys hands, while the other still pulls at the part of the line that is going towards the dog in the sky.]
:Dog: Arf arf arf

:[Beret Guy takes the dog under his arm, while holding the line in the other hand, and then he walks past Megan who turns to look after him while still holding on to her roll and line to her kite.]

{{comic discussion}}
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Beret Guy]]
[[Category:Strange powers of Beret Guy]]
[[Category:Animals]] [[Category:Dogs]]
[[Category:Kites]]
[[Category:Comics sharing name|Kite02]]

576: Packages

2022-05-11T17:58:39Z

BetaOS: Undo revision 267144 by 👖🔥 (talk)

{{comic
| number = 576
| date = May 1, 2009
| title = Packages
| image = packages.png
| titletext = Day six: 'The hell? Who mails a bobcat?'
}}

==Explanation==
[[Cueball]] wrote a script that searches online shopping sites for items that cost US$1 with free shipping. Because the script is programmed to use an account with a $365 balance, this script will buy one random item per day for a full year. [[Megan]] comments that Cueball might just end up with "lots of crap" but he replies that he might get something interesting.

Over five days the script orders a length of rubber hose, a ski mask, a bear trap, a map of {{w|The Pentagon}} and "lube" (sexual lubrication). This pattern prompts Cueball to stop the script out of fear of being placed on a FBI watch list; to a paranoid passerby, the purchased items make Cueball look like a terrorist who plans to kidnap and {{w|Rubber-hose cryptanalysis|torture}} federal employees. And also a pervert; such a contrast is considered funny.

In the title text a sixth item is sent, a {{w|bobcat}}. This is probably connected with [[325: A-Minus-Minus]] where [[Black Hat]] delivered a bobcat instead of a chair.

==Transcript==
:[Cueball is sitting at his computer.]
:Cueball: I love getting packages.

:[Megan enters and Cueball turns towards her.]
:Cueball: I set up a script to search eBay et. al. for $1 items with free shipping.

:[Cueball comes home with a backpack on his back and find a package waiting for him on his doorstop.]
:Cueball: I gave it $365, so each day it can buy me something random.

:[Cueball, again sitting at his computer.]
:Megan (off-screen): What if you just end up with lots of crap?
:Cueball: I'll give it away.
:Cueball: But I'm sure I'll end up with some interesting stuff.

:[The next five panels have a caption in a black frame at the top. The caption is written first for each panel. In the first panel Cueball has unpacked a hose. The paper lies in tatters on the floor. Megan stands next to him.]
:Day 1: Length of rubber hose
:Cueball: Could be handy around the house.

:[Cueball stands with a black item and the packaging material it came in. Megan looks on.]
:Day 2: Ski mask
:Cueball: It's spring, but hey.

:[Cueball is standing alone with a bear trap and the box it came in on the floor.]
:Day 3: Bear trap
:Cueball: Huh.

:[Megan is back as Cueball looks at a piece of paper that came in an envelope.]
:Day 4: Tourist map of the Pentagon.
:Megan: Uh oh.

:[Cueball is standing alone with a bottle of lube in one hand and the box it came in in the other hand.]
:Day 5: Lube
:Cueball: I'm stopping this before I end up on every F.B.I. watch list ever.

==Trivia==
Someone has set up an [http://bobcatinabox.com/ actual service] inspired by this comic, which does exactly what this comic describes, and has been featured in the advertisements section to the left.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Bobcats]]
[[Category:Money]]

2082: Mercator Projection

2022-05-11T17:58:22Z

BetaOS: Undo revision 267143 by 👖🔥 (talk)

{{comic
| number = 2082
| date = December 7, 2018
| title = Mercator Projection
| image = mercator_projection.png
| titletext = The other great lakes are just water on the far side of Canada Island. If you drive north from the Pacific northwest you actually cross directly into Alaska, although a few officials--confused by the Mercator distortion--have put up border signs.
}}

==Explanation==
The {{w|Mercator projection}} is a {{w|map projection}} (a way to present the spherical Earth surface into a flat 2-D map) presented by Flemish cartographer Gerardus Mercator in 1569. It was the standard map projection for some time, because it does preserve all angles in their true shape (i.e. it is a {{w|conformal map projection}}). This means that if you measure an angle on the map you get the right direction in the real world - a very useful feature if you're using the map for navigating. However, preserving the angle leads to severe distortions of the surface area, especially in the higher latitudes where countries appear much larger than they actually are. For example on the Mercator Projection, Greenland (the largest non-continent island in the world) is shown to be much larger than Australia (the smallest continent), although the latter in reality is nearly 4 times as big. Other examples of regions having distorted sizes and shapes due to the Mercator Projection can be explored in [https://thetruesize.com this link].

[[Cueball]] uses [[White Hat|White Hat's]] mistrust of the Mercator projection to convince him of ridiculous facts about Canada, namely that it is simply a small island in {{w|Lake Ontario}}. Map projections are generally {{w|continuous function}}s, meaning that they never map a {{w|disconnected space}} onto a connected one and therefore can never give the false impression that two areas that don't border each other do.

The title text continues on these falsehoods, claiming that the {{w|Great Lakes}} are simply "water on the far side of Canada Island", and that it is possible to drive directly into Alaska from the Pacific Northwest region of the US (it's not, Canada is in the way). Cueball can possibly make these statements as Canada is a country in the northern regions, where the Mercator Projection would show it larger than it actually is. However, Canada is the second largest country in the world by total area (land and water), after Russia.

The Mercator Projection was previously mentioned in [[977: Map Projections]] of "what your favorite map projection says about you". People who preferred the Mercator Projection was listed as "You're not really into maps." It is also the second comic in a row that relates somehow to latitudes. [[:Category:Bad Map Projections|Bad Map Projections]] is a series in xkcd, showing that it is really something on [[Randall|Randall's]] mind.

It is not the first time Cueball (or Randall) tries to spread misinformation, for instance it also has White Hat as the target in [[1677: Contrails]], but it can also be other people that are fooled like in [[1405: Meteor]].

==Transcript==
:[Cueball is holding a hand up as he talks to White Hat.]
:Cueball: Did you know Canada is actually a smallish island in Lake Ontario?
:White Hat: What?
:Cueball: Yeah, it only appears to have a land border with the U.S. due to the Mercator Projection.
:White Hat: Wow! I had no idea.

:[Caption below the frame:]
:At this point people feel so misled by the Mercator Projection that you can use it to convince them of basically any map fact.

{{comic discussion}}

[[Category:Maps]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]

1719: Superzoom

2022-05-11T17:58:03Z

BetaOS: Undo revision 267142 by 👖🔥 (talk)

{{comic
| number = 1719
| date = August 12, 2016
| title = Superzoom
| image = superzoom.png
| titletext = *click* Let him know he's got a stain on his shirt, though.
}}

==Explanation==
In this comic, [[Cueball]] is showing off his new {{w|superzoom}} camera to [[White Hat]]. These are cameras with large zoom lenses, often 25× or higher magnification. He is very excited and starts by exclaiming how they can take detailed photos of the craters on the {{w|Moon}}, and (on better models) relatively large photos of {{w|Jupiter}} even with a resolution so individual clouds can be seen. (See examples of zoom on these objects [https://www.youtube.com/watch?v=CwLbj0fBvXk here] and [https://www.youtube.com/watch?v=de2LjQ5F3HE here] without cloud resolution though, but with Jupiter's {{w|Galilean moons|four large moons}} and {{w|Saturn|Saturn's}} {{w|Rings of Saturn|rings}}.)

He then spots a bird (which is just a speck in the sky) and uses the superzoom for {{w|birdwatching}}, which is a popular use for these cameras. He can see that it's a {{w|peregrine falcon}} and that it has been {{w|Bird ringing|banded}} (ringed) and he can even read the number on the band (later it seems he has more trouble locating birds with his camera in [[1826: Birdwatching]]). He then spots an airplane and having taken a picture of it, he can tell that it is a {{w|Boeing 787 Dreamliner|787 Dreamliner}} from {{w|Japan Airlines}}, and he can even make out the registration number. [https://www.youtube.com/watch?v=p-0X3xJf-kg All this is possible], with a {{w|Nikon Coolpix P900}}, which may not be much larger than the one Cueball stands with here, with an extremely long lens, and at the time of this comics release that type of camera could be [https://www.amazon.com/Nikon-COOLPIX-Digital-Camera-Optical/dp/B00U2W4JEY bought at Amazon] for less than $600. If that is within the limit Cueball gives of a few hundred dollars can be [[1070: Words for Small Sets|debated]]... A [http://shop.usa.canon.com/shop/en/catalog/powershot-sx60-hs-refurbished|Canon SX-60, refurbished] with [https://www.flickr.com/groups/2290116@N21/pool/|65x optical zoom] currently sells for $379. Its predecessor, the SX-50 sold, refurbished, for less than $200 until going out of stock.

Note that before each comment he has taken a picture, presumably zooming further in after each photo of each new object, zooming out again before beginning with the next object.

Finally, White Hat exclaims that he is sold and states that he also want a superzoom camera like Cueball's. Cueball then points the camera down the street takes a picture and tells White Hat that the shop on ''Union Road'' has these camera in stock, indicating that he can see this inside the store (or in their window). He then takes another image and is able to make out not only the worker Kevin inside, he also recognizes him and (as mentioned in the title text after taking yet a further zoomed in picture) notice a stain on Kevin's shirt. He seems to like Kevin and asks White Hat to tell Kevin about the stain when he goes there to buy a superzoom camera. (This was the first time the name Kevin was used in xkcd for a fictive person, see more in [[1795:_All_You_Can_Eat#Kevin|this trivia]]).

Even with the ability of these cameras, it would be difficult for Cueball to be able to make out a specific worker inside the store, but if he is standing near a window it is not impossible, and if he has a stain on his shirt, it is in the same league as spotting a band on a bird in the air. Of course he has to be in a spot where he can see straight to the front of the shop.

The last panel and title text is also a remark on how such cameras can be used to spy on people for quite a far distance, which has often been (mis)used by {{w|Paparazzi|paparazzi photographers}} taking pictures of famous people (often while almost naked or in a bikini or other bathing clothes). Now everyman gets this disconcerting possibility to spy on their neighbors and others for just a few hundred dollars.

There are lenses that can do what Cueball describes about Jupiter's clouds in the comic (e.g., the [https://www.youtube.com/watch?v=IRq18WpQZC0 Canon 5200mm]), but so far not such a small consumer camera as shown in the illustration.

A couple of other factors that many people may not realize until after they've bought a consumer-level superzoom camera is that a) taking a hand-held picture at maximum zoom is typically rather blurry because the lens is magnifying all vibration and it's impossible to hold the camera steady enough (so a camera tripod would be needed), and b) that the lens' aperture at maximum zoom is typically much smaller than at normal focal lengths, with the result that the shutter time must be several times longer to get proper exposure, compounding the vibration / blurry problem. Modern superzoom cameras do have "image stabilization", which can mitigate blurriness due to vibration, but extreme telephoto photography is still more challenging than implied in the comic.

Also having zoomed so much it is very hard to actually locate a moving plane or bird in the sky while looking at the image shown on the camera. And as shown in the comic the lens is zoomed very much in. Of course this could be done by Cueball after having found the flying object with much less zoom. But still if he loses sight of the bird while fully zoomed in it will be almost impossible to find it again without zooming back out.

White Hat and Cueball have discussed photography before in [[1314: Photos]].

==Transcript==
:[White Hat and Cueball are walking right. Cueball is looking down at a camera with a long lens he is holding in both hands.]
:Cueball: I love these superzoom cameras. For a few hundred dollars you can take pictures of Moon craters and Jupiter's clouds.

:[They stop, White Hat looks up in the air while Cueball does the same but through the camera he is holding up to his eye while taking pictures. The camera lens is further zoomed out and is clicking.]
:Cueball: And birds! See that speck up there?
:<nowiki>*Click*</nowiki>
:Cueball: Peregrine falcon!
:<nowiki>*Click*</nowiki>
:Cueball: It's banded, too. Want the number?

:[White Hat looks even further up as Cueball turns left and point the even further zoomed camera almost straight up while taking photos.]
:Cueball: And see that plane?
:<nowiki>*Click*</nowiki>
:Cueball: 787 Dreamliner
:<nowiki>*Click*</nowiki>
:Cueball: Japan Airlines.
:<nowiki>*Click*</nowiki>
:Cueball: Registration is—

:[White Hat looks back down on Cueball who has turned to the right holding the fully out-zoomed camera level to the right along the ground.]
:White Hat: OK, I'm sold—I want one.
:<nowiki>*Click*</nowiki>
:Cueball: They're in stock at the place on Union Road.
:<nowiki>*Click*</nowiki>
:Cueball: Hey, Kevin's working today! He's great.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Animals]]

20: Ferret

2022-05-11T17:57:21Z

BetaOS: Undo revision 267130 by 👖🔥 (talk)

{{comic
| number = 20
| date = October 14, 2005
| title = Ferret
| image = ferret.jpg
| titletext = My brother had a ferret he loved which died since I drew this strip. RIP.
}}

==Explanation==
[[Cueball]]'s (Cueball-like) friend makes fun of his imagination that involves a flying ferret, and then suggests to go play video games instead. This shows the irony of his definition of "imagination." He makes fun of Cueball's creative fantasy while instead opting for a mass-produced fantasy.

The fact that Cueball lies about his goal could be a commentary on abandoning dreams to avoid confronting societal expectations.

The title text refers to the fact that [[Randall|Randall's]] brother in real life had such a pet ferret. Originally, Randall drew this comic while the ferret was still alive, and then it passed away in between his posting it on [[LiveJournal]] and reposting it with a title text on the new [[xkcd]] site. He now wishes that it will rest in peace.

The ferret returns in [[31: Barrel - Part 5]] and did in this way become part of the [[:Category:Barrel|Barrel series]]. This has also been canonized by Randall as can be seen on this web-archive version of xkcd: [http://liveweb.archive.org/web/20070207052159/http://www.xkcd.com/barrel.html The Boy and his Barrel].

The full series can be found [[:Category:Barrel|here]]. But below they are listed in the order Randall has put them in his collection linked to above:
* [[1: Barrel - Part 1]]
* [[20: Ferret]]
* [[11: Barrel - Part 2]]
* [[22: Barrel - Part 3]]
* [[25: Barrel - Part 4]]
* [[31: Barrel - Part 5]]

==Transcript==
:[A color drawing of a ferret with airplane wings and tail on it.]

:[Cueball and his Cueball-like friend (to the left) are talking.]
:Friend: Why on earth did you make those wings? You don't seriously think they could let your ferret fly, right?
:Cueball: I... of course not.

:[They continue to talk.]
:Cueball: That would be pretty dumb. It's just, uh... ...a Halloween costume.
:Friend: oh, okay.

:[They continue to talk. The head of the ferret can be seen to the far right on a table.]
:Friend: Besides, who would want a pet to fly anyway?
:Cueball: Yeah. Pretty lame, huh?

:[The friend leaves the frame while Cueball stays. The ferret cannot be seen.]
:Friend: Anyway, let's go play video games.

:[Cueball stands behind after his friend has left. He looks back towards his ferret.]

:[Cueball imagines his ferret flying over the ocean near the beach using his makeshift wings while holding his ferret.]

==Trivia==
*This was the 19th comic originally posted to [[LiveJournal]].
**The previous was [[19: George Clinton]].
**The next was [[21: Kepler]].
*Original title: "Friday's Drawing"
*Original [[Randall]] quote: "My brother has a ferret. He holds it like that and generally adores it. I have to concede that it's pretty cute, if smelly."
*This comic was posted on [[xkcd]] when the web site opened on Sunday the 1st of January 2006.
**It was posted along [[:Category:First day on xkcd|with all 41 comics]] posted before that on LiveJournal as well as a few others.
**The latter explaining why the numbers of these 41 LiveJournal comics ranges from 1-44.
*One of the original drawings drawn on [[:Category:Checkered paper|checkered paper]].
*A tank-top shirt based on this comic is available in the [https://store.xkcd.com/products/flying-ferret-tank-top xkcd store].

{{comic discussion}}

[[Category:Comics posted on livejournal| 19]]
[[Category:First day on xkcd]]
[[Category:Checkered paper]]
[[Category:Comics with color]]
[[Category:Checkered paper]]
[[Category:Comics featuring Cueball]]
[[Category:Multiple Cueballs]]
[[Category:Barrel|02]]
[[Category:Ferret]]
[[Category:Comics with xkcd store products]]
[[Category:Comics with lowercase text]]

2277: Business Greetings

2022-05-11T17:57:03Z

BetaOS: Undo revision 267122 by 👖🔥 (talk)

{{comic
| number = 2277
| date = March 6, 2020
| title = Business Greetings
| image = business_greetings.png
| titletext = We have email and social media now, so we probably don't need to keep exchanging business cards by pressing them gently against each others' faces with an open palm and smearing them around.
}}

==Explanation==
This comic is the third comic in a row in a [[:Category:COVID-19|series of comics]] about the {{w|COVID-19 pandemic}}. With this comic also on that topic, all comics of that week were about the pandemic. This continued for many more weeks.

As a reaction to the COVID-19 pandemic, people are refraining from personal contact. This leads to changes with customs in the workplace, such as {{w|handshake|shaking hands}} at the beginning of a meeting.

The comic shows [[Beret Guy]] addressing his employees at [[:Category:Beret Guy's Business|his eccentric company]] ([[Ponytail]], [[Hairy]] and [[Hairbun]], see also [[1997: Business Update]]). He states that although they should not overreact to the coronavirus, they should at least stop their custom of beginning meetings by "licking each others' eyeballs". Virus or not, it is not common for people to lick anyone's eyeballs at meetings,{{Citation needed}} but it could be an extreme stretch of intimate behavior to make an analogy to some cultures' norm of kissing acquaintances in greeting.

Humorously, his employees state that they will miss this human contact, but that they at least understand.

Contact between saliva and eyes are a very common way to spread the disease. However, this usually occurs from one infected person sneezing and airborne particles randomly coming in contact with an uninfected bystander's eye, or people touching their own faces and eyes after having touched an infected surface, not by applying the saliva directly to a person's eyeball by means of another person's tongue. Also, most people's eyelids instinctually close when they see an object, including someone else's tongue, about to hit them in order to protect the eyeballs, so actually licking each others' eyeballs, as opposed to merely each others' eye''lids'', would be very difficult for most people, but Beret Guy being able to do this would not be very surprising considering his other abilities, such as being immune to his head being impaled.

The title text refers to an actual business custom (exchanging {{w|business card}}s), but one which is absurdly altered to promote the spread of disease by touching cards and hands to faces. It is not clear whether this is safer or more dangerous than Beret Guy's previous practice of eating business cards, see [[1032: Networking]].

==Transcript==
:[Beret Guy is standing to the left addressing Ponytail, Hairy and Hairbun sitting in office chairs at a table. Hairbun is at the end of the table. All three have one arm on the table.]
:Beret Guy: I don't think we should overreact to the coronavirus,
:Beret Guy: But it might be time to put an end to the custom of starting business meetings by everyone licking each others' eyeballs.
:Hairy: I'll miss the human contact, but that's fair.
:Hairbun: Gotta change with the times.

==Trivia==
*When the comic was first published, it did not have a title-text; it was added later during the day of release.
**This has almost exclusively occurred previously with special interactive or dynamic comics.
***Absence of title-text is so unusual that it broke at least one xkcd client ([https://play.google.com/store/apps/details?id=com.floern.xkcd Browser for xkcd by Floern]).
*The phrase "each other" is actually singular. It should be "each other's eyeballs" (the eyeballs of each other person) and "each other's face" (the face of each other person).

{{comic discussion}}

[[Category:Comics featuring Beret Guy]]
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Hairy]]
[[Category:Comics featuring Hairbun]]
[[Category:Beret Guy's Business]]
[[Category:Social interactions]]

[[Category:COVID-19]]

2464: Muller's Ratchet

2022-05-11T17:56:41Z

BetaOS: Undo revision 267104 by 👖🔥 (talk)

{{comic
| number = 2464
| date = May 17, 2021
| title = Muller's Ratchet
| image = mullers_ratchet.png
| titletext = Who knew you could learn so much about sexual reproduction from looking at pictures on the internet!
}}

==Explanation==
In this comic, Randall reviews a passage explaining the internet with terms associated with evolution, comparing the constant resharing and changing of popular photos to evolutionary processes, namely {{w|Muller's ratchet}} and {{w|Genetic recombination|recombination}}.

An image of [[Hairbun]] showing a cat to [[Cueball]], who is apparently shocked, is used as an example of the subject phenomenon. This image is altered in various ways:
* A caption is added to the photo as a whole, possibly using an online "meme maker" tool. Many memes are made in this manner, such as the Office Space [https://imgflip.com/meme/That-Would-Be-Great "that would be great"] memes.
* Individual labels are placed on the participants (which include the cat). These labels may be literal, but often they are metaphorical. A common metaphorical example is the {{w|Distracted-boyfriend meme}}.
* This seems to be unmodified from the original, except being a bit fuzzy. This is likely a comment on how most people, due to being unfamiliar with image formats, will often pick settings when saving a picture that results in the image being compressed noticeably (usually via exporting as a JPG as opposed to a PNG).
* A caption is added at the top and bottom of the picture, again possibly by an online meme maker, and the photo cropped.
* A sword has been added to the picture, held in a comical position by a participant (the cat) who wouldn't usually have one.{{Citation needed}} These are typically just done as a joke. This image is also cropped and has its aspect ratio changed.
** A watermark is added to this image, having been added by "SwordApp" a fictional (as of this comic's publication) app used to add the sword
* Individual labels are placed on the participants here as well.
* Individual labels are placed on the main (human) participants only. This might be used to only apply metaphorical meanings to the people and not to the object being held (the cat).

Recombination is the combination of genetic material from chromosomes, shuffling genes during meiosis. In this case, it is being compared to shuffling and recombining aspects of an edited digital image.

Sometimes, genetic mutation can create better genes - like the sword being given to the cat in the image. Other changes remove or degrade from the genetic history, without apparent detriment, just because the circumstances do not currently confer any significant advantage to it. If the 'lost' ability is perhaps useful in dealing with an infrequent environmental stress then the loss of its utility might be felt a generation or two later.

With recombination, useful novel changes can be shuffled into the population without necessarily bringing in a less useful mutation, creating descendents with both the obvious advantages (a sword) and the previously more established resilience (the fuller frame).

The degradation of digital images has previously been explored in [[1683: Digital Data]].

The title text has a double meaning, referring both to the ways these particular images on the Internet illustrate these evolutionary processes (which are driven by the mechanisms of biological reproduction, including sexual reproduction) and to {{tvtropes|TheInternetIsForPorn|the amount of erotic imagery illustrating the mechanics of sexual activity one might find on the Internet}}.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[A caption sits above a slightly greyed-out photo of Hairbun holding out a cat to Cueball, who has his hand over his face and is leaning away. Below are arrows leading to much smaller variations of the photo, all altered in some way.]
:[From left to right: Image with the sides cropped and black text bordered by white in the bottom center; image with black text in white box with black border above cat, on Hairbun, and on Cueball; image identical to the original but with softer edges; image cropped around all sides to exclude all negative space around frame, with white text bordered by black near the top and bottom center; image cropped to cut out half of Hairbun and Cueball's legs and featuring the cat holding a sword out at Cueball; image same as the original except with black text bordered by white on top of the cat, Hairbun, and Cueball; and image blurred out and at low resolution with black text in white oval on top of Hairbun and Cueball.]
:Caption above: When a photo goes around on social media, people create lots of new versions of it.

:[A larger depiction of an image altered to cut out some of Hairbun and Cueball's legs and the cat holding a sword to the left of a caption, with a faint, shadowed wordmark saying "Made with ''SwordApp'']
:Caption: Sometimes, one of the edited versions becomes more popular and supplants the original. But often, the new version isn't made from the best copy of the image. It may be pixelated, cropped, or watermarked.
:[The same image appears with a more transparent box around it showing the cropped-out areas and an arrow pointing into it saying "lost". To the left is a caption.]
:Caption: As long as those flaws are minor enough that they don't cancel out the big change, the new version can still win out. Each good change brings with it random background damage. The degradation only goes one way. Once an image is cropped, its descendents will be, too. This steady loss of information is called '''''Muller's Ratchet'''''.
:[The original photo and the edited replacement are side-by-side, with the original on the right and the replacement on the left. The area above the cat where the sword is shown in the replacement is circled with a dotted line in both images. In the original, the area inside is greyed out, and in the replacement, the entire image is greyed out except for that area.]
:[Arrows point from the emphasized parts of both images to a new photo below that combines the original image with the sword from the replacement. The dotted line is still present. A caption sits to the left.]
:Caption: But there's a solution. The old versions are still around, so if you have an image editor that lets you splice together parts of two images, you can make a new version with the best parts of both. This process is called '''''recombination...''''']
:[All previous panels are grouped in one large panel, with a caption below the entire frame]
:Caption: People use evolutionary metaphors to explain the spread of internet content, but at this point we have so much more experience with the internet that I feel like it often makes more sense the other way around.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Hairbun]]
[[Category:Biology]]
[[Category:Computers]]

2437: Post-Vaccine Party

2022-05-11T17:56:03Z

BetaOS: Undo revision 267081 by 👖🔥 (talk)

{{comic
| number = 2437
| date = March 15, 2021
| title = Post-Vaccine Party
| image = post_vaccine_party.png
| titletext = [Future update] Well, someone accidentally dropped an M&M in their cup of ice water, and we all panicked and scattered.
}}

==Explanation==
This is another comic in a [[:Category:COVID-19|series]] related to the {{w|COVID-19 pandemic}}.

As more and more people are getting [[:Category:COVID-19 vaccine|vaccinated]] against COVID-19, and as the CDC has released guidelines suggesting vaccinated people can start gathering in larger groups, there is increasing excitement about the possibility to resume get-togethers, and have a party. However, being very cautious, [[Randall]] is cutting down the scope for his first "post-pandemic" party from that of a normal party. Not all of the scope reductions make sense. {{Citation needed}}

===Drinks===
* Instead of interesting alcoholic and sugary beverages, he's reducing scope by serving plain ice water.
* Instead of serving the ice water in ordinary-sized cups, he's further reducing scope by serving it in small cups.

===Food===
* A person holding an ordinary party might provide large quantities of foods of various sorts. Randall is reducing scope by serving only two types of food, {{w|M&M's}} and {{w|saltine cracker}}s.
* He is further reducing scope by limiting the quantities: each guest will be provided with three individual pieces of candy and one single cracker.

===Entertainment===
* Instead of regular music, Randall's party has less-exciting {{w|ambient music}}.
* {{w|Karaoke}} has been eliminated completely.
* The big-screen TV has been reduced to a standard TV, and instead of showing active and exciting sports games, it will show mellow painting lessons by {{w|Bob Ross}}.

===Activities===
* Board games require strategy and could be exciting, so Randall has replaced them with {{w|52 pickup}}, a game with neither quality. Having already downsized to a single game, he further reduces the scope by reducing the number of cards involved from 52 to 3.
* His original notes indicate that the party might include both video games and ping pong, but he has reduced scope here as well by merging these activities and offering only a single video game, the ancient {{w|Pong}} game.
* Finally, while conversation will be allowed, Randall is reducing scope by reducing quality. This element of the party plan is qualitatively different from the others because it's generally the guests themselves that provide the majority of the conversation at a party, so it's possible that Randall is simply acknowledging [[2424|the effect]] that the pandemic has had on peoples' ability to converse normally.

The title text mentions that in the end, despite Randall's efforts, even the incredibly mild disruption of an M&M's falling into a cup of water caused the party-goers to panic and flee, much as Cueball and Ponytail did in [[2330: Acceptable Risk|a similar situation]].

==Transcript==
:[The comic consists of four underlined headings, two by two grid, with three or four lines of text beneath each. Almost all of the original lines of text have been fully or partially crossed out (marked with <del> below), and five new items have been added (marked with <ins> below), plus some brackets and one arrow. Even one of the added items has been modified.]
:Drinks
:* <del style="text-decoration-color: red">Soda</del>
:* <del style="text-decoration-color: red">Wine</del>
:* <del style="text-decoration-color: red">Beer</del>
:* <del style="text-decoration-color: red">Cocktails</del>
:* <ins style="color: red">Small cups of ice water</ins>

:Food
:* <del style="text-decoration-color: red">Pizza</del>
:* <del style="text-decoration-color: red">Nachos</del>
:* <del style="text-decoration-color: red">Various snacks</del>
:* <ins style="color: red">Three M&Ms and a saltine per person</ins>

:Entertainment
:* Music <ins style="color: red">(ambient)</ins>
:* <del style="text-decoration-color: red">Karaoke</del>
:* <del style="text-decoration-color: red">Big screen</del> TV showing <del style="text-decoration-color: red">sports</del><ins style="color: red">Bob Ross</ins>

:Activities
:* <del style="text-decoration-color: red">Board games</del> <ins style="color: red">52-card pickup</ins> [The "52" is then stricken out and replaced with "3"]
:* Video Games
:* <del style="text-decoration-color: red">Ping</del> <ins style="color: red">(</ins>Pong<ins style="color: red">)</ins> [A red arrow points from "Video Games" to "(Pong)"]
:* <del style="text-decoration-color: red">Good</del> conversation

:[Caption below the panel:]
:We're planning our first post-vaccine party, but we want to start slow.

{{comic discussion}}

[[Category:COVID-19]]
[[Category:COVID-19 vaccine]]
[[Category:Social interactions]]
[[Category:Food]]
[[Category:Sport]]
[[Category:Music]]
[[Category:Video games]]