explain xkcd - User contributions [en]

Talk:2467: Wikipedia Caltrops

2021-05-25T00:54:42Z

108.162.219.28:

seems more like flares (which distract) than caltrops (which physically impair) to me. [[Special:Contributions/162.158.222.122|162.158.222.122]] 16:31, 24 May 2021 (UTC)

I'd say "Well, I now know what I'm doing for the next few hours!", except that I suspect that this isn't even going to be the half of it... [[Special:Contributions/141.101.98.46|141.101.98.46]] 16:37, 24 May 2021 (UTC)
::👍 [[User:OhFFS|OhFFS]] ([[User talk:OhFFS|talk]]) 21:45, 24 May 2021 (UTC)

except 'caltrops' is a funnier word than 'flares' and we get the gist anyway. [[Special:Contributions/108.162.237.4|108.162.237.4]] 17:23, 24 May 2021 (UTC)

no WAY randall is a jon bois fan
[[Special:Contributions/173.245.52.175|173.245.52.175]] 17:38, 24 May 2021 (UTC)

Flares draw fire to prevent missiles from reaching their target. Caltrops impede the actual motion of the vehicle. If the links are as distracting as Randall implies, I think his choice makes sense!
[[Special:Contributions/108.162.215.92|108.162.215.92]] 00:34, 25 May 2021 (UTC)

Shouldn't the links be given as QR codes rather than plain text, which would have to be read and re-typed into a device with a suitable web browser? [[Special:Contributions/108.162.219.28|108.162.219.28]] 00:54, 25 May 2021 (UTC)

2303: Error Types

2020-05-06T23:50:54Z

108.162.219.28: /* Type VII explanation and link to /r/DataIsBeautiful */

{{comic
| number = 2303
| date = May 6, 2020
| title = Error Types
| image = error_types.png
| titletext = Type IIII error: Mistaking tally marks for Roman neumerals
}}

==Explanation==
{{incomplete|Created by a TYPE IX DROID. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}

The comic is riffing on {{w|Type I and type II errors}}. The first two rows of the comic's table are correct definitions for established terms in statistics. Further rows contain suggestions for new terminology.
{|class = "wikitable"
|+Explanation of error types
|-
!Type
!Description
!Explanation
|-
|Type I
|False positive
|A false positive is a result that indicates a correlation, when there is no correlation in reality.
|-
|Type II
|False negative
|A false negative is a result that indicates no correlation, when there is a correlation in reality.
|-
|Type III
|True positive for incorrect reasons
|"{{w|Type III error}}" is a nonstandard term meant to build off the notion of type I and II errors. Randall's explanations of this and of Type IV errors line up with some definitions of them, but others have been proposed. None have yet been widely adopted.
|-
|Type IV
|True negative for incorrect reasons
|As with "Type III", this definition is nonstandard and often a bit tongue-in-cheek.
|-
|Type V
|Incorrect result which leads you to a correct conclusion due to unrelated errors
|Here we get into errors entirely made up by Randall. The idea behind this one is that a botched statistical test might accidentally result in a true conclusion due to completely unrelated errors in the other direction--perhaps during data collection or aggregation.
|-
|Type VI
|Correct result which you interpret wrong
|This has actually been proposed as a definition of a Type IV error by Marascuilo and Levin.
|-
|Type VII
|Incorrect result which produces a cool graph
|It is commonly believed that [https://www.reddit.com/r/dataisbeautiful/ data is beautiful]. Sometimes, that's still true even when the data is bogus!
|-
|Type VIII
|Incorrect result which sparks further research and the development of new tools which reveal the flaw in the original results while producing novel correct results
|
|-
|Type IX
|The Rise of Skywalker
|''{{w|Star Wars: The Rise of Skywalker}}'' is the ninth and final film in the ''Star Wars'' Skywalker saga. It received far less critical acclaim than the previous two films in the sequel trilogy.
|-
|Type IIII
|Mistaking tally marks for Roman neumerals ''[sic]''
|Title text. "I", "II", and "III" could be representations of the numbers one, two, and three in either {{w|tally marks}} or {{w|Roman numerals}}. It's only when you get to "IV" or "IIII" that it becomes apparent which system is being used. Ironically, Randall seems to have made a typographical error of his own when spelling the word "numerals".
|}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
* Type I Error: False positive
* Type II Error: False negative
* Type III Error: True positive for incorrect reasons
* Type IV Error: True negative for incorrect reasons
* Type V Error: Incorrect result which leads you to a correct conclusion due to unrelated errors
* Type VI Error: Correct result which you interpret wrong
* Type VII Error: Incorrect result which produces a cool graph
* Type VIII Error: Incorrect result which sparks further research and the development of new tools which reveal the flaw in the original results while producing novel correct results
* Type IX Error: The Rise of Skywalker

{{comic discussion}}

[[Category:Star Wars]]

1707: xkcd Phone 4

2019-06-28T22:28:24Z

108.162.219.28: /* Explanation */

{{comic
| number = 1707
| date = July 15, 2016
| title = xkcd Phone 4
| image = xkcd_phone_4.png
| titletext = The SpaceX system carefully guides falling phones down to the surface, a process which the phones increasingly often survive without exploding.
}}

==Explanation==
This is the fourth entry in the ongoing [[:Category:xkcd Phones|xkcd Phone series]], and once again, the comic plays with many standard tech buzzwords to create a phone that sounds impressive but would actually be very impractical. The previous comic in the series [[1549: xkcd Phone 3]] was released just over a year before this one and the next [[1809: xkcd Phone 5]] was released almost 8 months later.

From the top-left, going clockwise:
*'''18,000 μAh (micro-Ampere hours) nickel-lithium-iron battery (non-rechargeable)''' Phone battery capacity is measured in {{w|ampere-hour}}s (which thanks to the magic of {{w|dimensional analysis}}, is just an unusual way of denoting electric charge, which equals 3600 Coulombs). Usually, the capacity is quoted in milliampere-hours (one-thousandth, or 10-3, of an ampere hour); however, this one is quoted in ''micro''ampere-hours (one-millionth, or 10-6, of an ampere-hour), presumably as a marketing ploy to give a more impressive-looking number. Quoted in more standard terms, this phone's battery capacity is 18 mAh. In comparison, an iPhone 6+ has a battery capacity of 2,750 mAh. This phone's battery is dreadful (under a typical current draw of 0.1A, it would power the phone for about 11 minutes). There is nothing normally called a "nickel-lithium-iron battery" - rather, this seems to be a [[739|malamanteau]] of the experimental {{w|nickel–lithium battery}} and the common {{w|lithium ion battery}} (which does not contain any iron) or the lithium-iron-phosphate battery, often called lithium-iron, but more often called the LiFePO battery. The {{w|nickel–iron battery}} may contain {{w|lithium hydroxide}}, but it's ''terrible'' for most applications. Worse, this battery is non-rechargeable, meaning that it would have to be replaced to use the phone again after it is exhausted (every 11 minutes, at that!).
**[[XKCD Phone 3]] was powered by two {{w|AA battery|AA batteries}} (not included), which have an energy capacity roughly 100 times larger.
**Many devices have a small second battery which is only used for keeping the clock time. This could be such a battery.
*'''Subwoofer''' - A {{w|subwoofer}} is a large bass speaker, which this is not. Some phones do have high-quality speakers for playing music, but these are not placed right next to the earpiece - this would be a surefire way to deafen your users. When put next to Dog Whistle, this is probably a pun, since both relate to dogs; the English onomatopoeia for the sound a dog makes is "Woof".
*'''"Dog whistle"''' - A {{w|dog whistle}} is a high-pitched whistle that humans cannot hear, but dogs can. In speaker terminology, a bass speaker is called a {{w|woofer}} because it could reproduce the low pitch of a dog bark. A treble speaker is a {{w|tweeter}}; if this "whistle" is actually a speaker, it might be termed a ''supertweeter''. The scare quotes may be a reference to "dog-whistle politics", in which certain phrases have a particular meaning to a segment of the audience that passes unnoticed by the rest. This allows a candidate to surreptitiously signal agreement with that group, without alienating the rest of the audience, among whom the ideas might be unpopular if plainly stated.
**[[xkcd Phone 2]] contained a "dog noticer".
*'''Non-porous, washable''' - On the one hand, it's rare for a phone to be made of porous materials. On the other, there are legitimately waterproof phones that seal the speakers and ports with rubber.
**[[xkcd Phone 2]] was also washable (though only once).
*'''''WebMD'' partnership: cough-activated feature reads aloud a random diagnosis for "coughing"''' - {{w|WebMD}} is a website to help people diagnose themselves. For the vast majority of people, a cough just means an irritated throat or maybe a cold, but selecting randomly from all WebMD diagnoses gives some much more ominous - if very unlikely - ones, including {{w|ricin}} poisoning, {{w|plague}}, {{w|lung cancer}} and {{w|radiation poisoning}}.
*'''Wings''' - These {{w|wings}} resemble the ones found on {{w|sanitary towel}}s (usually called "pads", making this a possible iPad pun) which attach the pad to the {{w|gusset}} and keep it in place between the woman's legs during her period ({{w|Menstruation}} cycle). If actually functional as {{w|aerodynamic}} wings, they would likely come into play when the "SpaceX" impact protection feature becomes engaged, and would likely make holding the phone awkward if rigid.
**[[XKCD Phone 3]] had a similarly positioned wristband.
*'''Beveled bezel''' - The ''bezel'' is the ring around the edge of watches and screens. This one's {{w|bevel}}ed, which means it's cut at an angle.
*'''Bezeled bevel''' - Punning on the above. Doesn't make much sense, but could mean that it features a beveled edge which is surrounded by a bezel.
*'''Seedless''' - Fruit such as grapes can be "seedless", which means that they're grown from a special {{w|cultivar}} that doesn't grow seeds in the normal way. Making a phone seedless probably won't do anything, but {{w|Random seed|it might hurt}} its {{w|random number generator}}.
**[[XKCD Phone 3]] was boneless.
*'''Water resistant down to 30 meters and below 50''' - {{w|Water resistance}} is often measured in terms of how deep an object can be submerged, since pressure increases with depth. In this case, the phone can be submerged to almost any depth, but there's an odd lacuna between 30 meters and 50 meters. It also plays with the confusion in describing depths greater than 50m as "below 50". Alternatively, this might indicate the phone must remain dry above 50 meters altitude.
**[[xkcd Phone]] and [[XKCD Phone 3]] could drown. The latter was otherwise waterproof. [[xkcd Phone 2]] was only waterproof internally.
**In a previous comic, [[870: Advertising]], a similarly absurd range was used: "Up to 15% or more!"
**This could be mocking the "donut hole" in American Medicare drugs insurance, where people are insured up to a certain amount, then not insured, then insured again. This doesn't appear to make sense to anyone.
*'''Turing-complete''' - A computer is {{w|Turing completeness|Turing complete}} if it can perform all the operations needed to simulate a {{w|Turing machine}}. All modern computers are usually described as Turing complete, which would make this not very impressive, but no computer can ever be Turing complete in the truest sense (since they can only ever have a finite amount of memory) - if the xkcd Phone 4 is truly a universal computer, it's ''very'' impressive indeed.
*'''Gregorian/Julian calendar date switch''' - The {{w|Julian calendar}} is the predecessor to the modern {{w|Gregorian calendar}} - the difference is that the two calendars calculate leap years differently. The current difference between the calenders is 13 days, which will remain unchanged until February 2100. The Julian calendar is still used occasionally--mainly by Eastern Orthodox Christians--but it's not something so vital that it needs a hardwired switch on the front of the phone. This may be a play on the ability to switch the time display between a 12-hour clock and a 24-hour clock. It could also be plying with the ability to switch between Daylight Savings Time and Standard, or change time zones.
*'''''SpaceX'' impact protection: when dropped, phone lands on barge''' - The rocket company {{w|SpaceX}} recently trialed a {{w|SpaceX reusable launch system development program|reusable rocket stage}} which after separating from the launch vehicle, lands on a {{w|Autonomous spaceport drone ship|drone barge}} to be reused.
**The title text pokes fun at the number of SpaceX rockets that [https://www.youtube.com/watch?v=V3wZRdg-Tmo crashed and exploded] before they got the landing gear right.
*'''Parallel port''' - A {{w|parallel port}} is a type of interface which transfers high-volume simultaneous data. It was often used to connect printers and other devices to computers, but was generally considered obsolete by the time smartphones began to appear on the market, and would be very bulky and slow compared to the USB ports generally used in phones. It was commonly found together with {{w|serial port}}s, which are used for low-volume sequential data such as [[485: Depth|mouse]] [[1110: Click and Drag|movements]]. Here it is paired with a serial interface for analog data with parallel outputs for several people.
*'''12 headphone jacks''' - Headphone jacks are circular ports in a phone that allow audio to be played through headphones connected to the jack. There are [http://www.businessinsider.com.au/apple-headphone-jack-iphone-side-effects-2016-7#/#smaller-headphone-makers-would-be-at-a-disadvantage-4 constant rumours] that Apple's next iPhone will not have any headphone jacks (which eventually proved true for the iPhone 7 announcement two months after this comic). Also, [http://www.google.com Google] was developing a module for the now-cancelled [https://atap.google.com/ara/ Project Ara], a modular smartphone. This module allows the device to have [http://www.overclock3d.net/news/audio/sennheiser_shows_audio_module_concepts_for_project_ara/1 Four headphone jacks], which would allow audio to be shared among 4 people, each occupying one port. The xkcd phone takes this too far when they install a whopping TWELVE of them, which is completely overkill because almost nobody needs to connect to 12 headphones at once. 12 headphones will also drain the battery, like the wireless discharging in the [[XKCD Phone 3]], because playing audio through 24 speakers, two for each pair of headphones, is very power-consuming.
*'''Onboard cloud''' - The "cloud" is a catch-all term for the use of remote computers to store data, providing a backup if all local copies are lost and allowing the data to be accessed from a broad network. An "onboard cloud" would thus be a contradiction in terms, and appears to be a marketing ploy to use the "cloud" buzzword to describe the device's onboard storage capacity.
*'''New BrightGloTM display incorporates genetically spliced jellyfish protein (should have used the glowing genes, not the stinging ones)''' - {{w|Aequorea victoria}} is a species of jellyfish that contains {{w|green fluorescent protein}}, a gene that is bioluminescent and gives off light. This protein was supposed to be used to light the phone's screen. Unfortunately, the developers messed up, and accidentally took the [http://bmcgenomics.biomedcentral.com/articles/10.1186/s12864-015-1568-3 stinging kind], which means that touching the phone screen will be as painful as a jellyfish sting i.e. very painful.
*'''✓ Certified''' - Twitter certifies accounts related to music producers, government, journalism, business, sports, and other more "official" types of accounts with a blue checkmark besides the twitter handle (besides the @whomever). It's of course nonsense for a phone to be twitter verified. Alternatively, it might be a reference to [[1096: Clinically Studied Ingredient]], in which buzzwords such as "tested" and "certified" are intended to make a given product sound more legitimate.
*'''Software-defined''' - {{w|Software-defined radio}}s are quite popular in some areas, meaning the radio hardware is quite universal and can be adapted to different radio protocols just by changing software. SDR would actually be quite a nice feature for a cellphone. Of course it doesn't specify if it's the radio that is software defined.
*'''Exposed ductwork''' - A phone shouldn't even have ductwork, unless it has a very sophisticated cooling system, but this could supply air to the dog whistle. Exposed ductwork is a trademark of {{w|Bowellism|Bowellist}} architecture such as the {{w|Lloyd's Building}} in London and the {{w|Pompidou Centre}} in Paris. Exposed ductwork is also considered a crucial flaw in a death star. May also refer to a transparent window in the side of the phone allowing the user to see the circuitry inside, similar to computer cases with transparent side panels popular among DIY computing enthusiasts.
*'''Voice interaction: {{w|Siri (software)|Siri}}, {{w|Cortana (software)|Cortana}}, {{w|Google Now}} and {{w|Amazon Echo|Alexa}} respond simultaneously''' - These are all {{w|intelligent personal assistant software}} (from Apple, Microsoft, Google and Amazon respectively) and all do the same thing: control your phone and answer questions using speech recognition. Having all four talk at once would mean you'd have a total cacophony while gaining nothing.
**[[XKCD Phone 3]] might have included Siri.

*'''Did you know "4" is "IV" in Roman numerals?®©™''' - the tenth version of Apple's {{w|operating system}} for its {{w|Macintosh computer}} was labeled {{w|OS X}}, which was intended to be read as "oh ess ten". {{w|Steve Jobs}} was irritated that everyone else preferred "oh ess ecks". This phrase is labeled with trademark and copyright symbols, as if someone desires it to be the product's {{w|tagline}} but has poor understanding of relevant laws. In particular, "<big>{{w|™}}</big>" is a symbol for {{w|unregistered trademark}}s while "<big>{{w|®}}</big>" is a symbol for {{w|registered trademark}}s. If the phrase were an unregistered trademark, the owner would be prohibited from using "<big>{{w|®}}</big>".

==Transcript==
:[An image of a smartphone featuring wings is shown. Clockwise from the top left the labels read:]
:18,000 μAh nickel-lithium-iron battery (non-rechargeable)
:Subwoofer
:"Dog whistle"
:Non-porous, washable
:''WebMD'' partnership: Cough-activated feature reads aloud a random diagnosis for "coughing"
:Wings
:Beveled bezel
:Bezeled bevel
:Seedless
:Water resistant down to 30 meters and below 50
:Turing-complete
:Gregorian/Julian calendar switch
:''SpaceX'' impact protection: When dropped, phone lands on barge
:Parallel port
:12 headphone jacks
:Onboard cloud
:New BrightGloTM display incorporates genetically spliced jellyfish protein (should have used the glowing genes, not the stinging ones)
:✓ Certified
:Software-defined
:Exposed ductwork
:Voice interaction: Siri, Cortana, Google Now and Alexa respond simultaneously

:[Below the phone:]
:Introducing
:<big><big>The xkcd Phone 4</big></big>
:Did you know "4" is "IV" in Roman numerals?®©™

{{comic discussion}}
[[Category:xkcd Phones]]
[[Category:Comics sharing name|xkcd Phones]]
[[Category:Animals]] 
[[Category:Virtual Assistants]]

182: Nash

2019-05-05T05:59:57Z

108.162.219.28: Added explanation of what Nash equilibrium is, and why this ain't it, chief.

{{comic
| number = 182
| date = November 10, 2006
| title = Nash
| image = nash.png
| titletext = Maybe someday science will get over its giant collective crush on Richard Feynman. But I doubt it!
}}

==Explanation==
The first panel references a scene in the movie {{w|A Beautiful Mind (film)|A Beautiful Mind}} in which {{w|John Forbes Nash, Jr.|Dr. John Forbes Nash, Jr.}} comes up with his famous concept of {{w|Nash equilibrium}} when he realizes that they get suboptimal results if all the guys go after the same hot girl. The second panel deconstructs the idea as Dr. Nash point out that staying away from the hot girl does not actually constitute a stable Nash equilibrium. The third panel has physicist {{w|Richard Feynman|Dr. Richard Feynman}} render their entire discussion a moot point by getting all the girls while the mathematicians ponder optimal strategies.

In fact, the situation in the comic is a great example of what a Nash equilibrium is ''not''. The only reason that one player (pun intended) wouldn't try to go for the hot girl is if they were afraid that someone else would go for the hot girl as well. However, in a Nash equilibrium, each player assumes that the other players won't change their strategy, and concludes from this assumption that their own strategy shouldn't change either. If all of them have the strategy of flirting with the hot girl's friends, and all of them are assuming (incorrectly) that the others won't change their strategies, then they all would change their strategies simultaneously, breaking the equilibrium.

Feynman shared the {{w|Nobel Prize}} in Physics in 1965 for his important work in {{w|quantum electrodynamics}}. Feynman wrote {{w|Richard Feynman#Popular works|popular books}} and gave public lectures. These presented his work in advanced theoretical physics to the general public, a practice that was not very common at that time. One of his more famous books, ''{{w|Surely You're Joking, Mr. Feynman!}}'' gives many personal anecdotes from his lifetime, and it contains a passage giving advice on the best way to pick up a girl in a bar.

The aforementioned public books and lectures brought him great attention in the media, and his exceptional results in physics coupled with this have led to his getting an almost [http://articles.latimes.com/2001/dec/02/magazine/tm-10496 cult-like following] among scientists. He's also (largely due to his book) known as something of a womanizer, thus why he would take several women home at once.

The title text explains that [[Randall]] wonders whether this "collective crush" (crush as in love affair) will fade away one day, but he doubts it. Great respect for Feynman continues to this day, even though he died about a quarter-century ago.

==Transcript==
:[Cueball and Dr. Nash (the Cueball-like guy to the right) stand talking to each other. Cueball is looking left and pointing off-panel.]
:Cueball: Hey, Dr. Nash, I think those gals over there are eyeing us. This is like your Nash Equilibrium, right? One of them is hot, but we should each flirt with one of her less-desirable friends. Otherwise we risk coming on too strong to the hot one and just driving the group off.

:[Cueball is now looking at Dr. Nash.]
:Dr. Nash: Well, that's not really the sort of situation I wrote about. Once we're with the ugly ones, there's no incentive for one of us not to try to switch to the hot one. It's not a stable equilibrium.

:[Cueball again looks left while Dr. Nash shakes his fist.]
:Cueball: Crap, forget it. Looks like all three are leaving with one guy.
:Dr. Nash: Dammit, Feynman!

{{comic discussion}}

[[Category:Comics featuring real people]]
[[Category:Comics featuring Cueball]]
[[Category:Multiple Cueballs]]
[[Category:Science]]

2019: An Apple for a Dollar

2018-07-14T16:23:41Z

108.162.219.28: Edited two sentences together to sound less redundant.

{{comic
| number = 2019
| date = July 13, 2018
| title = An Apple for a Dollar
| image = an_apple_for_a_dollar.png
| titletext = I'd like 0.4608 apples, please.
}}

==Explanation==
{{incomplete|Created by a SIMPLE APPLE - needs an explanation of "platonic ideal exchange". Please change this comment when editing this page. Do NOT delete this tag too soon.}}

[[Megan]] is about to buy an apple at a grocery store when she is surprised that the price is exactly one dollar. In most cases in the US, {{w|Sales taxes in the United States|sales tax}} must be taken into account, but most states exempt food sold in grocery stores, so the price comes out to a round value. This is so strange for Megan that it throws her for a loop. Buying one apple for one dollar feels to her more like a simplified, imaginary ''idea'' of a transaction (a "{{w|Platonic ideal}}") than like something that could actually happen in real life.

Megan likely shares Randall's background of engineering and math. When learning science, engineering, and math in the education system, one studies examples where every number is some round value, and all situations are simplified to the barest essentials so as to demonstrate the ideas being taught. Then, when doing real problems in the real world, one spends the rest of one's life almost never being able to use the simplified tricks demonstrated as examples in school, because when math is used to describe the natural world, nothing is ever a round number unless by design.

The harsh difference between being able to buy an apple for a dollar at this quaint store, and having to deal with arbitrary decimals and numbers in the rest of life could be touching on Megan's life experience of the world not being what she was prepared for, resulting in her intense response. Regardless if that is true or not, it seems the cashier is unable to figure out how to handle it (or does not want to), and raises the price to an arbitrary non-rounded value, which has the intended effect of halting Megan's outburst.

Megan's references refer to common parameters used in solving science or math questions. A {{w|Frictionless plane}} is a scenario from the writings of Galileo to calculate the movement of an object down an {{w|inclined plane}}, since his equations did not account for {{w|friction}}.

"A train leaving Chicago at 40 mph" refers to common math questions, involving trains and solving for the distance required to overtake said train, although this problem involves the rather unrealistic assumption that the train's velocity keeps constant. Like the frictionless plane, this is a common simplification that allows the problem to be solved with quite simple techniques, just like having round quantities (e.g. 1 dollar/apple) eases arithmetic problems. See also [[669: Experiment]]. Apples themselves are commonly used as units for math problems, including problems as simple as basic arithmetic.

The comic repeats a common theme in the strip of engineers and computer scientists trying to apply their technical experience to social situations. In this case, the conversation partner is "normal", and does not respond supportively, which is a common situation in the real world and a possible point of empathy with readers.

It seems that according to the title text, Megan only has (or only wants to spend) one dollar, so she would not be able to buy a whole apple at the new price (0.4608 × $2.17 ≈ $1). Stores usually sell whole apples, so asking for a fraction of one is not likely to work out.

==Transcript==
:[Megan is at the store counter, behind which Ponytail (the cashier) is waiting.]
:Megan: Just this apple, thanks.
:Ponytail: That will be one dollar.
:Megan: Exactly? No tax or anything?
:Ponytail: That's right.

:[Megan stares at the apple in a frameless panel.]

:[Scene zooms in on Megan.]
:Ponytail: ...Is that a problem?
:Megan: It's just weird to realize that every other transaction in my life will be more complicated than this.

:[Scene changes focus to Ponytail behind the counter.]
:Megan: This is like a platonic ideal exchange. An apple for a dollar.
:Ponytail: I see.

:[Scene changes back to Megan, once again lost in profound contemplation of the apple.]
:Megan: Are we on a frictionless plane? Is a train leaving Chicago at 40 mph? ''Should I solve for something??''
:Ponytail: Okay, apples are $2.17 now.
:Megan: That's... probably better for us both.

{{comic discussion}}

[[Category:Comics featuring Megan]]
[[Category:Comics featuring Ponytail]]

Talk:2009: Hertzsprung-Russell Diagram

2018-06-20T15:38:07Z

108.162.219.28:

How the heck is a lava cake more luminous than a campfire?

Talk:1982: Evangelism

2018-04-18T22:43:24Z

108.162.219.28:

I want to know where vi vs. emacs fits on this spectrum.
[[Special:Contributions/108.162.238.53|108.162.238.53]] 15:12, 18 April 2018 (UTC)
:I use vi by virtue of the fact that it once opened on my computer and I don't know how to close it [[Special:Contributions/108.162.219.76|108.162.219.76]] 15:20, 18 April 2018 (UTC)

When you say people open bananas from the other side, which side is the proper side and which is the other? I open from the proper side, not the side with the stem (just like the monkeys taught us) [[Special:Contributions/108.162.219.76|108.162.219.76]] 15:20, 18 April 2018 (UTC)
:Why are you being taught by monkeys? [[Special:Contributions/108.162.219.28|108.162.219.28]] 22:43, 18 April 2018 (UTC)

The title text seems to be a reference to the big-endian/little-endian war in "Gulliver's Travels".[[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 16:04, 18 April 2018 (UTC)

And 3 miles to the right of the banana conflict is "iPhone vs. Android" [[User:Smperron|Smperron]] ([[User talk:Smperron|talk]]) 17:07, 18 April 2018 (UTC)

I ''LOVE'' the "Pun Intended" tag. [[Special:Contributions/108.162.219.28|108.162.219.28]] 22:43, 18 April 2018 (UTC)

Talk:1974: Conversational Dynamics

2018-03-30T21:43:57Z

108.162.219.28:

The spacing between "anywhere" and "at" is around 12px, while the spacing between other words is around 6px. It's a mistake or it's intended to emphasize "at any time"? [[Special:Contributions/108.162.219.28|108.162.219.28]] 21:43, 30 March 2018 (UTC)

Talk:1871: Bun Alert

2017-08-03T01:21:39Z

108.162.219.28:

I think it's about Ponytail realizing she's opened a can of worms in that she was the one who taught these people about the bun, and now everyone's infatuated with them. [[Special:Contributions/108.162.249.52|108.162.249.52]] 00:53, 3 August 2017 (UTC)

This is basically the title text from 1682. Is it just me, or has Randall been running out of ideas lately? [[User:Jaalenja|Jaalenja]] ([[User talk:Jaalenja|talk]]) 13:31, 2 August 2017 (UTC)
:In all fairness, Randall has been known to play the long game. There might be a thread to pull here. {{unsigned ip|172.68.143.186|13:44, 2 August 2017‎ (UTC)}}
::Yea, Randall has built on earlier ideas before. E.g. 1818 being built on an idea from What-If 141. It's non-indicative of a lack of ideas. But the notion that ideas are a finite resource is silly anyways. Watch the talk he gave at Google in 2007, it's on YouTube, and there's a bit in there where he talks about how he comes up with his comics. [[Special:Contributions/108.162.238.35|108.162.238.35]] 13:49, 2 August 2017 (UTC)
No idea why he's picked bunnies specifically, maybe that will become apparent in a future strip. Considering just this standalone comic, it seems to be a parody of apps that increasingly swamp the user with notifications about pointless things that one might imagine nobody would ever care about. In this instance, it might be imagined that few people would care about notifications for bunny sightings, but in the last pane it appears that someone truly does. This might compare with notifications for rare pokemon sightings in Pokémon Go (not provided in-app but there are groups on facebook etc. that alert users to rare pokemon / legendary raids) - with the difference that bunnies are extremely common. Also, is it significant that he specifically uses the word "buns" instead of "bunnies"? There may be a connection with the observation that they are just like little hopping loaves of bread.[[Special:Contributions/141.101.98.208|141.101.98.208]] 14:45, 2 August 2017 (UTC)
:I mean, that's pretty much what twitter is for.[[Special:Contributions/162.158.134.190|162.158.134.190]] 15:11, 2 August 2017 (UTC)
:Cf. memes such as "anatomy of the bun". [[Special:Contributions/108.162.238.35|108.162.238.35]] 19:37, 2 August 2017 (UTC)
:Agree with the idea that it may be reference to people overreacting to trivial things and using technology to alert others about it e.g. Starbucks unicorn locations, PokemonGo, etc. No idea about the title text though, he is basically saying people may be alerted at night? Maybe some recent trend that focuses on night gatherings? [[Special:Contributions/172.68.47.72|172.68.47.72]] 20:58, 2 August 2017 (UTC)

I think this may just be an extended example of dadaism. If he carries on with the theme I think it is as likely to make less sense as it is to make more sense. [[Special:Contributions/162.158.58.189|162.158.58.189]] 15:12, 2 August 2017 (UTC)

Beret Guy's comment about investors and building the alert system could be a reference to [[1493: Meeting]]. Is the "loaves of bread that hop" line just a pun on the word "bun"? Is "Night Buns" a reference to something? --[[Special:Contributions/172.68.46.41|172.68.46.41]] 20:13, 2 August 2017 (UTC)

WARNING: your captchas aren't working well at all. In firefox your captcha gets crushed somehow underneath the formatting tools bar where you can do text entry when editing. I was only able to pass the captcha and get this comment posted by viewing the html source of the webpage and tracking what link the captcha was supposed to go to. I suggest you try setting up some sort of formatting on the webpage to place the captcha elsewhere on the page one sees after editing a comment-box/wiki-like page. Thanks[[Special:Contributions/162.158.154.91|162.158.154.91]] 23:25, 2 August 2017 (UTC)

Just checked out that captcha problem since I never noticed it at work where I cant log in and now here at home the captcha is showing fine nothing hidden or combined with the format bar or the comment box this on Firefox 54.0.1 (64-Bit) current window size 1279x929 [[Special:Contributions/108.162.219.28|108.162.219.28]] 01:20, 3 August 2017 (UTC)

Talk:1871: Bun Alert

2017-08-03T01:20:51Z

108.162.219.28:

I think it's about Ponytail realizing she's opened a can of worms in that she was the one who taught these people about the bun, and now everyone's infatuated with them. [[Special:Contributions/108.162.249.52|108.162.249.52]] 00:53, 3 August 2017 (UTC)

This is basically the title text from 1682. Is it just me, or has Randall been running out of ideas lately? [[User:Jaalenja|Jaalenja]] ([[User talk:Jaalenja|talk]]) 13:31, 2 August 2017 (UTC)
:In all fairness, Randall has been known to play the long game. There might be a thread to pull here. {{unsigned ip|172.68.143.186|13:44, 2 August 2017‎ (UTC)}}
::Yea, Randall has built on earlier ideas before. E.g. 1818 being built on an idea from What-If 141. It's non-indicative of a lack of ideas. But the notion that ideas are a finite resource is silly anyways. Watch the talk he gave at Google in 2007, it's on YouTube, and there's a bit in there where he talks about how he comes up with his comics. [[Special:Contributions/108.162.238.35|108.162.238.35]] 13:49, 2 August 2017 (UTC)
No idea why he's picked bunnies specifically, maybe that will become apparent in a future strip. Considering just this standalone comic, it seems to be a parody of apps that increasingly swamp the user with notifications about pointless things that one might imagine nobody would ever care about. In this instance, it might be imagined that few people would care about notifications for bunny sightings, but in the last pane it appears that someone truly does. This might compare with notifications for rare pokemon sightings in Pokémon Go (not provided in-app but there are groups on facebook etc. that alert users to rare pokemon / legendary raids) - with the difference that bunnies are extremely common. Also, is it significant that he specifically uses the word "buns" instead of "bunnies"? There may be a connection with the observation that they are just like little hopping loaves of bread.[[Special:Contributions/141.101.98.208|141.101.98.208]] 14:45, 2 August 2017 (UTC)
:I mean, that's pretty much what twitter is for.[[Special:Contributions/162.158.134.190|162.158.134.190]] 15:11, 2 August 2017 (UTC)
:Cf. memes such as "anatomy of the bun". [[Special:Contributions/108.162.238.35|108.162.238.35]] 19:37, 2 August 2017 (UTC)
:Agree with the idea that it may be reference to people overreacting to trivial things and using technology to alert others about it e.g. Starbucks unicorn locations, PokemonGo, etc. No idea about the title text though, he is basically saying people may be alerted at night? Maybe some recent trend that focuses on night gatherings? [[Special:Contributions/172.68.47.72|172.68.47.72]] 20:58, 2 August 2017 (UTC)

I think this may just be an extended example of dadaism. If he carries on with the theme I think it is as likely to make less sense as it is to make more sense. [[Special:Contributions/162.158.58.189|162.158.58.189]] 15:12, 2 August 2017 (UTC)

Beret Guy's comment about investors and building the alert system could be a reference to [[1493: Meeting]]. Is the "loaves of bread that hop" line just a pun on the word "bun"? Is "Night Buns" a reference to something? --[[Special:Contributions/172.68.46.41|172.68.46.41]] 20:13, 2 August 2017 (UTC)

WARNING: your captchas aren't working well at all. In firefox your captcha gets crushed somehow underneath the formatting tools bar where you can do text entry when editing. I was only able to pass the captcha and get this comment posted by viewing the html source of the webpage and tracking what link the captcha was supposed to go to. I suggest you try setting up some sort of formatting on the webpage to place the captcha elsewhere on the page one sees after editing a comment-box/wiki-like page. Thanks[[Special:Contributions/162.158.154.91|162.158.154.91]] 23:25, 2 August 2017 (UTC)

Just checked out that captcha problem since I never noticed it at work where I cant log in and now here at home the captcha is showing fine nothing hidden or conbined with the format bar or the commment box this on Firefox 54.0.0 (64-Bit) current window size 1279x929 [[Special:Contributions/108.162.219.28|108.162.219.28]] 01:20, 3 August 2017 (UTC)

1794: Fire

2017-02-04T00:21:13Z

108.162.219.28: Grammar

{{comic
| number = 1794
| date = February 3, 2017
| title = Fire
| image = fire.png
| titletext = Billy Joel briefly detained
}}

==Explanation==
In the United States and Canada, the term {{w|multiple-alarm fire}} is used to categorize the level of response to fires by local authorities, for instance how many units responded to the alarm. The range typically only goes through three levels: One-alarm fire, two-alarm fire, and three-alarm fire. The term may also be used to indicate a severe fire.

In the comic, a newspaper front page is shown with its cover story reporting a fire at a level of 50,000-alarm fire, with a picture of a factory on fire. However, this is not to indicate the severity of the fire but just because the fire is at an alarm factory with at least 50,000 alarms in it at the time of the fire. It is not noted that it is a fire-alarm factory, although that would make the most of the joke. It is, however, clear from the sound-waves in the image that several of the alarms have been set off, which could indicate that it was finished fire alarms that had been triggered by the fire. Though that need not to be 50,000 going off to make it a fire that burned 50,000 alarms. Also, a fire could cause other types of alarms to go off due to heating and other defects caused by the fire. For instance car alarms (at least in the early days of such alarms) went off just because someone touched the cars.

Of course, it could also be understood like the factory had 50,000 defective alarm units which all caught fire simultaneously (for instance during a large test). That would also make it a 50,000-alarm fire.

The title text mentions the musician {{w|Billy Joel}} being detained briefly as a suspect for the fire. But he was quickly released, likely because ''{{w|We Didn't Start the Fire|he didn't start the fire}}'', which is a reference to his song "[https://www.youtube.com/watch?v=eFTLKWw542g We Didn't Start the Fire]". In other words, Billy Joel's claim that he is not responsible for the fire at the alarm factory has been taken seriously enough for him to be released.

The incidence where Billy Joel got arrested for {{w|arson}} was earlier shown on a similar folded newspaper with only one line of text visible next to an image. This was in comic #4 of [[821: Five-Minute Comics: Part 3]].

This all fits together as [https://upload.wikimedia.org/wikipedia/en/2/2a/WeDidntStarttheFire.jpg the cover of the single] is also a newspaper page with a picture of Billy Joel beneath a headline which is the title of the song. The column of text to the right of the picture is readable here. It is not easy to read it through as some of the text continues outside the image. (The text is a section of the [http://www.azlyrics.com/lyrics/billyjoel/wedidntstartthefire.html lyrics for the song] starting from "Richard Nixon" after the fourth chorus continuing in to the next chorus).

This song is also mentioned in [[1775: Things You Learn]].

==Transcript==
:[The comic shows the top part of the front page of folded a newspaper. There are several sections with unreadable text above the main headline, where the papers name, date of issue and other daily info would be. Centered below the large two line heading of the cover story there is a photo covering half of the pages width. In the photo a white factory, with one large and one smaller building, is on fire, with sound waves emanating to all sides. Large flames are coming out the top of both buildings and above them heavy black smoke make the sky black. Where there is no smoke the sky is white. A small black building to the right has not yet caught fire. On either side of the picture there are a column and below the picture there are two more columns. All four continues to the bottom of the visible part of the paper and consist of more unreadable text. These columns constitute the main body of text of the cover story. The only readable text on the paper is the headline which is:]
:'''50,000-Alarm Fire'''
:'''at Alarm Factory'''

{{comic discussion}}

[[Category:Comics featuring real people]]

1375: Astronaut Vandalism

2014-05-30T08:09:39Z

108.162.219.28: Removed erroneous apostrophe

{{comic
| number = 1375
| date = May 30, 2014
| title = Astronaut Vandalism
| image = astronaut_vandalism.png
| titletext = That night, retired USAF pilots covertly replaced the '62' with '50'.
}}

==Explanation==
Signs like this normally show the distance to places on earth's surface. This sign also has an arrow pointing away from earth and towards "space", with a distance of 62 miles (100 km), due to "astronaut vandalism". The title text states that the distance to "space" was changed later from 62 miles (100 km) to 50 miles (80 km) by retired Air Force pilots. This indicates that the pilots wanted to reduce the altitude considered to be "space", so that their own high altitude flights could be considered space flights.

There may be an Elvis aspect to this comic. The mileages are approximately consistent with the signs being in Tupelo, Mississippi, birthplace of Elvis Presley. Tupelo is about 100 miles from Graceland (Elvis' home) in Memphis, Tennessee. Tupelo is also a bit over a hundred miles from the International Rock-A-Billy Hall of Fame in Jackson, Tennessee. The mileages given by Google maps, however, don't exactly match the mileages on the sign in the comic. Instead of 98 & 115 (in the comic), Google maps gives 101 & 104.

Another possible explanation is a simple mixup. {{W|Winona, Mississippi}} is the hometown of astronaut {{W|Donald H. Peterson}}, who is a retired Air Force officer and pilot, and served as an astronaut in the early Shuttle program. From Winona, it is 115 miles to Memphis International Airport, and 98 miles to Jackson-Medgar Wiley Evers International Airport ([http://www.travelmath.com/nearest-airport/Winona,+MS source]). Thus, the sign would be reasonably located in Winona, albeit with an error, and Peterson would have vandalized it (and some visiting USAF buddy of his could change it back).

The {{W|U.S. Air Force}} will award {{W|astronaut wings}} to rated officers who fly higher than 62 miles as {{W|World Air Sports Federation}} (FAI) in the mid 1950s designated the 100-kilometer {{W|Karman Line}} (62 miles) as the official boundary between the {{W|Earth's atmosphere}} and {{W|outer space}}. In the 1960s, however, after the FAI defined space at 100 km, it was enough to fly above 50 miles to earn the wings and seven pilots earned them like this. This explain why it was retired pilots who changed the sign - so their wings would still be valid.

Useful summary: [http://www.slate.com/articles/news_and_politics/explainer/2004/09/where_does_space_begin.html Slate: Where does space begin?]

This comic was published on the same day that the [http://en.wikipedia.org/wiki/Dragon_(spacecraft) Dragon spaceship] was unveiled.

==Transcript==
:[A signpost with three arrows.]
:[Arrow pointing up:]
:Space 62
:[Arrow pointing right:]
:Jackson 115
:[Arrow pointing left:]
:Memphis 98

{{comic discussion}}

1363: xkcd Phone

2014-05-02T16:13:27Z

108.162.219.28: Undo revision 66590 by 108.162.216.73 (talk) The hell do pokédexes have to do with this?

{{comic
| number = 1363
| date = May 2, 2014
| title = xkcd Phone
| image = xkcd_phone.png
| titletext = Presented in partnership with Qualcomm, Craigslist, Whirlpool, Hostess, LifeStyles, and the US Chamber of Commerce. Manufactured on equipment which also processes peanuts. Price includes 2-year Knicks contract. Phone may extinguish nearby birthday candles. If phone ships with Siri, return immediately; do not speak to her and ignore any instructions she gives. Do not remove lead casing. Phone may attract/trap insects; this is normal. Volume adjustable (requires root). If you experience sudden tingling, nausea, or vomiting, perform a factory reset immediately. Do not submerge in water; phone will drown. Exterior may be frictionless. Prolonged use can cause mood swings, short-term memory loss, and seizures. Avert eyes while replacing battery. Under certain circumstances, wireless transmitter may control God.
}}

==Explanation==
{{incomplete|No longer created by a BOT, but probably still needs more editing.}}

This comic is a parody of a multitude of mobile-technology related issues that, when brought together, create a general satire of smartphone advertising. The advertised features here either make previously useful capabilities useless or add features nobody wants. Except for "your mobile world (going) digital", which is old news.

From bottom left, going clockwise:

* '''FlightAware partnership:''' This is a reference to the [http://www.flightaware.com/ FlightAware] flight tracking service. This FlightAware partnership results in the phone playing airplane engine noise whenever a flight passes over the phone's current location, making this an annoying and intrusive feature that no one wants.
* '''Realistic case:''' possibly a joke on various audiovisual devices like gaming consoles that advertise realistic sound, graphics, etc. Of course, applying "realistic" to an actual physical case is ridiculous. Either the case is actually real, or it doesn't actually function as a case.
* '''Clear screen:''' This is a pointless descriptor from the perspective of the consumer. Of course the screen is clear. This joke works in tandem with the previous joke, as a play on "clear case, realistic screen," which are both hypothetically viable selling points.
* '''Side Facing Camera:''' There was a recent controversy surrounding a kickstarter for a surreptitious, side-mounted camera device for smartphones due to the advertisement of the device as a good way to take creep shots, which are illegal in many places. Widespread dissemination of these devices as a built-in feature would likely result in a sharp increase in delinquency of this nature. May also be an ''ad absurdum'' extension of devices with both forward and backward facing cameras.
* '''Custom blend OS:''' iOS and Android are offered by different conglomerates and run on different kernels. A "custom blend" would probably be a nightmare to work with.
* '''Simulates alternate speeds of light:''' This renders the clock useless. The speed of light is roughly 2.99x108 meters per second. Relativistic effects, such as time dilation, only occur at significant fractions of the speed of light. Since the phone is simulating a much slower speed of light, driving at highway speeds will cause time dilation. For example, driving at 90mph (90% of the default simulated speed of light) gives a time dilation of about 2.29. So while you are driving at 90mph your clock will run 2.29 times slower than a stationary one. Travelling faster than the simulated speed of light will make the clock run backwards.
* '''Wireless:''' as in cordless phone. This is the bare minimum a phone has to have in order to be a mobile phone, so advertising it as a feature feels dated by decades. Or, perhaps Munroe is implying the entire phone is without wires, in which case it wouldn't function.
* '''Accelerometer screams in free fall:''' Another useless function. Rather than having some sort of feature to prevent breakage or cracking when a drop is detected, the phone just makes you more aware of its potential imminent doom.
* '''When exposed to light, phone says "hi":''' Bait and switch, and also a build from the previous joke. The implied feature is that the screen or camera will automatically adjust, but instead the phone is weirdly anthropomorphized.

The ominous warnings and disclaimers in the title text are probably a reference to the ''Saturday Night Live'' parody ad for {{w|Happy Fun Ball}} ([http://www.rollingstone.com/movies/pictures/50-greatest-saturday-night-live-sketches-of-all-time-20140203/happy-fun-ball-0459912 original video hosted on rollingstone.com]).

* '''Presented in partnership with Qualcomm, Craigslist, Whirlpool, Hostess, LifeStyles, and the US Chamber of Commerce.''' {{w|Qualcomm}} is a semiconductor company that designs and produces chips for mobile phones, but the other companies mentioned here have no association with mobile phones.
* '''Manufactured on equipment which also processes peanuts.''' A warning often seen on candy and other foods for people with a peanut allergy. It is highly unlikely that equipment used to produce mobile phones would also process food.
* '''Price includes 2-year Knicks contract.''' Mobile phones are often sold by phone companies in combination with a cell phone plan, but a contract with the {{w|New_York_Knicks|Knicks}} would only appeal to pro basketball players.
* '''Phone may extinguish nearby birthday candles.''' A rather oddly specific capability, which might also be annoying for anyone attempting to host a birthday party. As to how it would do this, a very powerful directional speaker would be able to blow out a nearby candle, but the speakers in mobile phones aren't going to be that big.
* '''If phone ships with Siri, return immediately; do not speak to her and ignore any instructions she gives.''' {{w|Siri}} is a virtual personal assistant application for Apple devices. Not speaking to it and not following its instructions would defeat its purpose. It may suggest that a malevolent "Siri AI" has sneaked itself onto some devices, at the manufacturing stage, for some diabolical purpose.
* '''Do not remove lead casing.''' Devices that emit high levels of ionizing radiation are often encased in lead, but a phone that would emit that level of radiation would be unhealthy to carry around and be probably too heavy as well. This could also mean the device is an actual bananaphone as regular phones emit no ionizing radiation ([http://xkcd.com/radiation xkcd Radiation Dose Chart]). Regrettably, the lead casing would render the phone inedible.
* '''Phone may attract/trap insects; this is normal.''' Some plants, like the {{w|Venus_flytrap|Venus flytrap}}, attract and trap insects, but mobile phones are not known to exhibit this behaviour.
* '''Volume adjustable (requires root).''' {{w|Android_rooting|Rooting}} is the method to gain privileged access on Android phones. Adjusting the volume should be available to any user and would not be restricted to root access only.
* '''If you experience sudden tingling, nausea, or vomiting, perform a factory reset immediately.''' These symptoms are usually associated with chemical or radiation poisoning. Neither of these would be cured by a {{w|Factory_reset|factory reset}}.
* '''Do not submerge in water; phone will drown.''' Most phones are not waterproof and will probably short-circuit when submerged. Drowning however, would imply that the phone breathes air (which actually would be possible if it had a {{w|Lithium-air_battery|Li-air battery}}).
* '''Exterior may be frictionless.''' The front of a smartphone is usually made of glass and should have a surface with very low friction. The back of a phone is usually made from a material that has higher friction to make it pleasant to hold and to make sure it doesn't slide off objects it is placed on. A completely frictionless surface would make it almost impossible to hold and would make it very susceptible to drops.
* '''Prolonged use can cause mood swings, short-term memory loss, and seizures.''' These are all side effects that are associated with certain kinds of medication and would not be acceptable for mobile phones.
* '''Avert eyes while replacing battery.''' Actions that would warrant averting your eyes are usually associated with high levels of radiation (e.g. making an {{w|X-ray}} photo). A phone that emits X-ray radiation would not be healthy to be around. Or it may be a reference to the {{w|Ark_of_the_Covenant|Ark Of The Covenant}}.
* '''Under certain circumstances, wireless transmitter may control God.''' According to most religions, God (or Gods) are usually in control of us. Gods are usually viewed as not directly controllable.

==Transcript==
'''The xkcd Phone'''
Your mobile world just went digital®

* Flightaware partnership: Makes airplane noises when flights pass overhead
* Realistic case
* Clear screen
* Side-facing camera
* Runs custom blend of Android and iOS
* Simulates alternate speeds of light (default: 100 miles per hour) and ajusts clock as phone accelerates
* Wireless
* Accelerometer detects when phone is in free fall and makes it scream
* When exposed to light, phone says "hi!"

{{comic discussion}}