explain xkcd - User contributions [en]

2775: Siphon

2023-05-14T11:51:23Z

172.70.114.78: /* Explanation */

{{comic
| number = 2775
| date = May 12, 2023
| title = Siphon
| image = siphon_2x.png
| imagesize = 310x378px
| noexpand = true
| titletext = ADDITIONAL NOTES: Fixed a bug that caused some rocks to generate virtually infinite heat while just sitting there.
}}

==Explanation==
{{incomplete|Created by a SIPHONIC WINDS - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
Cueball and Megan have a demonstration of a {{w|siphon}}, by which the gravitational force on an upper reservoir of liquid and molecular cohesion move a liquid upward through a tube, traversing a higher peak to reach a lower exit. Randall has also mentioned siphons in [https://what-if.xkcd.com/143/ whatif 143] and in his book, "how to," section "how to make a pool."

Siphons are commonly used in modern society (e.g., most American residential toilets are flushed by siphon action).

Siphons are separate from a similarly counter-intuitive phenomenon of {{w|capillary action}}, where a liquid flows through narrow spaces (even upwards, entirely against gravity) in that a siphon need not be of such small diameter. Capillary action will also move liquid into an initially empty channel, whilst a siphon must be 'primed', by filling the tube, in order to draw liquid over a high point to ultimately always drop down into a lower container. Capillary action is caused by surface tension and attractive forces between the liquid and the walls of the channel; the liquid level will rise until the weight of the column of liquid matches the attractive forces. A siphon requires that the weight of the liquid column on the "higher" side of the channel peak not exceed atmospheric pressure, or else the liquid will split, leaving a {{w|Torricelli's_experiment|partial vacuum}}. Capillary action can lift liquid higher than the maximum height of the "higher" side of a siphon with the same liquid, if the attractive forces are strong enough.

Apparently, even though Cueball and Megan have set up the experiment correctly, the water no longer demonstrates a siphon by flowing from the upper bucket to the lower. Cueball observes in surprise that "it's true," meaning that this is a very recent development, and Megan remarks that it was honestly weird in retrospect that scientists had ever tried to rationalize this admittedly counter-intuitive phenomenon in the first place. Siphons require initial suction to function, so it is plausible to imagine skeptical people “proving” they do not function by refraining from providing the initial suction.

The punchline of the comic is in the caption, which delivers a piece of physics news that the "2023 update to the universe" finally fixed this phenomenon, dubbed "the siphon bug". The joke here is that the entire complex and multifaceted system of {{w|physics}} in and of itself is treated as though it's simply the logic (or perhaps the sometimes unintentional result of various default [[1620: Christmas Settings|configuration options]] combined) to a video game, and that siphoning (rather than being an interesting physical phenomenon worth studying) was nothing more than a bug unintentionally created by the "devs" (whoever that may be). In reality, siphons still very much exist in our universe,{{citation needed}} though {{w|simulation hypothesis|the idea that we live in a computer simulation}} is also prevalent in {{w|the matrix|our modern pop culture}}.

The title text is a reference to [[2115: Plutonium]]. It expands on the joke surrounding the idea of an "Earth dev log" by referencing {{w|nuclear power}}, and how it's apparently another bug that some nuclear elements (notably {{w|uranium}} and {{w|plutonium}}, among others) can be and have been harnessed by humanity in order to continually generate energy (though in decreasingly useful amounts, making it not useful after some length of time, possibly that of several decades), all while the elements themselves are simply sitting there in the core of some {{w|nuclear reactor}}.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[There are two buckets: the one on the left is on a stool and is filled with water, the other on the right is on the ground and has a small amount of water. Cueball is standing on the left and holding a tube between the buckets. No water is flowing through the tube, which appears to have just emptied from both ends. Megan is standing on the right and watching the proceedings.]
:Cueball: Wow, it's true—the water doesn't flow up the tube anymore.
:Megan: Honestly, it's weird that it ever did.
:Megan: Why did we think that was normal?

:[Caption below the panel:]
:Physics news: The 2023 update to the universe finally fixed the "siphon" bug.

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Physics]]

2754: Relative Terms

2023-03-28T20:25:57Z

172.70.114.78:

{{comic
| number = 2754
| date = March 24, 2023
| title = Relative Terms
| image = relative_terms_2x.png
| imagesize = 425x442px
| noexpand = true
| titletext = Small sewing machines are sewing machines that are smaller than a sewing machine. A sewing machine is larger than a small sewing machine, but quieter than a loud sewing machine.
}}

==Explanation==
{{incomplete|Created by a BOT THAT IS LARGER THAN A BOT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
The terms "small" and "big" are used to refer to size; the terms "loud" and "quiet" are used to refer to (audial) volume.

While these terms are relative, they are often used even when there is nothing obvious being compared against (e.g. "A windmill is a big thing" or "An ant is a small thing"). This comic humorously suggests that the item defined to be in the middle of all four terms ("neither small nor big; neither quiet nor loud") is a sewing machine, as a sewing machine seems (at least in comparison to the other items on the graph) to be neither particularly big nor particularly small, neither particularly quiet nor particularly loud.

An alternative argument may be that the in the center would be the average adult human (as this is the perspective from which most people use language), though this observation would lose some of the comic's comedic value.

The center of the chart is a sewing machine, and the comic is claiming that the scales of "loud and quiet" and "big and small" are measured in comparison to a standard size sewing machine. A standard sewing machine is roughly 60dB in volume and approximately 42” X 21”, although this is for industrial machines, and those in the home would be both smaller and quieter.

The title text is humorously tautological because it compares the standard against those things that are themselves defined against the standard.

{| class="wikitable"
|+ Small and quiet (upper left)
|-
! Item !! Description
|-
| Ant ||
|-
| Balloon || a party balloon is quite loud when it pops; a hot-air balloon is big enough to carry a few humans.
|-
| Book ||
|-
| Bun (rabbit or pastry) || "Bun" is an informal term for a rabbit and a loaf of bread, this comparison was made in [[1871: Bun Alert]]
|-
| Butterfly || This entry is found on the top left corner, corresponding to the extremes of quietness and smallness. Butterflies are small and make little noise.
|-
| Hat ||
|-
| Mouse || A mouse is a very small, quiet animal. This might also be a reference to the expression "quiet as a mouse", meaning very quietly.
|-
| Newt ||
|-
| Pin drop || The expression "hear a pin drop" is used to indicate that an area is exceptionally quiet; the idea is that the space is so silent that even something as insubstantial and tiny as a pin can be heard hitting the ground.
|-
| Snow globe || A {{w|snow globe}} is much smaller than a sewing machine. Some snow globes have a small music box that can be wound up to play a melody. Snow globes without a music box are silent.
|}

{| class="wikitable"
|+ Small and loud (upper right)
|-
! Item !! Description
|-
| Baby || Babies are usually considered small, and can be quite loud when they cry.
|-
| Blender || Blenders make a lot of noise when in use. Most household blenders are smaller than a sewing machine.
|-
| Cricket || Top right corner. This would refer to the insect, which is pretty small and can be quite loud; the sport of cricket or a cricket game would be much larger and potentially much louder.
|-
| Fire alarm || The primary purpose of a fire alarm is to notify people of fire, so fire alarms are usually very loud.
|-
| Firecracker || A {{w|Firecracker}} is a small explosive firework that makes a very loud bang when lit.
|-
| Flute ||
|-
| Harmonica ||
|-
| Popcorn ||
|-
| Songbird ||
|-
| Whistle || This is of course the device known as a whistle, as it is small. The act by humans to whistle has no size (other than that of the whistler). A whistle is used functionally in place of a human that whistles. The loudest human whistle ever recorded was 8372 Hz and roughly 110 DB, which is a C9 in the standard musical scale and is roughly as loud as a jackhammer[https://www.vnews.com/West-Lebanon-man-sets-a-world-record-for-whistling-24480844#:~:text=Guinness'%20website%20says%20Stanford%20reached,in%20the%20standard%20musical%20notation.]. Since a whistle should be able to beat this it must be seen as loud.
|}

{| class="wikitable"
|+ Big and quiet (lower left)
|-
|-
! Item !! Description
|-
| Anaconda ||
|-
| Giraffe || Giraffes can be quite loud, but they usually vocalise using frequencies well below the range of human hearing. So, to a human, giraffes are quiet.
|-
| Northern lights || "In 2016, a Finnish study confirmed that the Aurora Borealis does produce a sound that can be heard" [https://www.techexplorist.com/listen-sound-aurora-borealis/47421/]
|-
| Shark ||
|-
| Statue || Most statues are larger than a sewing machine. Most statues are silent, but some have fountains or other devices that make sound.
|-
| The Moon || Lower left corner; the Moon is very, very big{{fact}}, but it is also completely silent as sound cannot travel through the vacuum of space.
|-
| Tree ||
|-
| Windmill ||
|}

{| class="wikitable"
|+ Big and loud (lower right)
|-
! Item !! Description
|-
| Airplane ||
|-
| Cannon ||
|-
| Riding mower ||
|-
| [[wikipedia:Calliope_(music)|Steam calliope]] || A large musical device which functions by sending steam (or more recently compressed air) through attached whistles.
|-
| Train ||
|-
| Tuba ||
|-
| Volcano || Lower right corner. Volcanic eruptions can be extremely loud. The {{w|1883 eruption of Krakatoa}} made a pressure wave of 180 dB, the loudest sound ever recorded.
|-
| Waterfall ||
|-
| Whale ||
|}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[A chart, with "Quiet" to "Loud" on the X-axis, and "Small" to "Big" on the Y-axis. It is split into four quarters, with "Sewing machine" in the center.]

:[Upper left quadrant (Small & Quiet items):] Butterfly, Pin drop, Mouse, Ant, Bun (rabbit or pastry), Snow globe, Newt, Balloon, Book, Hat

:[Upper right quadrant (Small & Loud items):] Popcorn, Cricket, Songbird, Whistle, Baby, Harmonica, Flute, Fire alarm, Blender, Firecracker

:[Lower left quadrant (Big & Quiet items):] Shark, Tree, Anaconda, Giraffe, Statue, Windmill, Northern lights, The Moon

:[Lower right quadrant (Big & Loud items):] Tuba, Riding mower, Cannon, Airplane, Train, Waterfall, Steam calliope, Whale, Volcano

:[Caption below the panel:]
:''Big'', ''Small'', ''Loud'', and ''Quiet'' are relative terms. The thing they're relative to is a sewing machine.

{{comic discussion}}

[[Category:Charts]]
[[Category:Aviation]]
[[Category:Animals]]
[[Category:Buns]]
[[Category:Sharks]]
[[Category:Music]]
[[Category:Volcanoes]]
[[Category:Food]]

2744: Fanservice

2023-03-02T03:18:23Z

172.70.114.78: added citation needed for the funny

{{comic
| number = 2744
| date = March 1, 2023
| title = Fanservice
| image = fanservice_2x.png
| imagesize = 188x278px
| noexpand = true
| titletext = I was eventually kicked out of my architectural engineering program because I wouldn't stop referring to HVAC as "the fandom."
}}

==Explanation==
{{incomplete|Created by an HVAC ROCK BAND - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

This comic is very similar to [[2036: Edgelord]] and [[2654: Chemtrails]]. In all three of these comics, a modern slang term or just a commonly used word ("chemtrails" was the case in 2654) is used to describe a job, and while the slang or word seems accurate, it isn't the normally used term for the job. Previously a graph theory PHD was labeled an "edgelord", a reference to how mathematical graphs have edges, but this time a turbine maintenance engineer is called out for doing a lot of fanservice, as in, literally serving/maintaining a huge fan (with which turbines are often inaccurately conflated). In the other comic, trails of ant pheromones were labeled as "chemtrails", a reference to how pheromones are chemicals.{{citation needed}}

A second order of dissonance is introduced from the difference between fans and turbines, which are designed to work towards opposite purposes. Randall has previously touched on wind turbines ''not'' being fans, most notably in [[1378: Turbine]].

{{wiktionary|fanservice|Fanservice}} is a term often used to describe certain decisions made in TV or film productions that make some form of knowing nod to the viewers that isn't necessary to the plot or visualization of the work. It can just mean inserting obscure details of the work's back-history, to spark gleeful recognition amongst the more devoted fans, or it could be increasing the ridiculousness of character's behavior (often due to one or other overly contrived reason) to live up to their stereotype. A frequent form of this is the {{tvtropes|MsFanservice|Ms. Fanservice}} trope, where the more glamorous female characters find themselves in more figurehugging clothing, clothing that actually covers {{tvtropes|ChainmailBikini|much less of their figure}} than should be practical or even find themselves shoehorned into a situation where they {{tvtropes|CensorSuds|aren't wearing}} even their 'normal' skimpy outfit.

In the title text, Cueball refers to HVAC (a term for the unified heating, ventilation, and air conditioning systems of a given building) as "the fandom." Normally, "fandom" means the group of fans of something, but here refers to a system that relies on lots of fans.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

:[Cueball stands next to White Hat, who has his hands balled into fists and has small lines above his head to indicate annoyance.]
:Cueball: So, I hear you do a lot of fanservice.
:White Hat: '''''No!'''''

:[Caption below the panel:]
:How to annoy a turbine maintenance engineer

{{comic discussion}}

[[Category:Comics featuring Cueball]]
[[Category:Comics featuring White Hat]]
[[Category:Puns]]
[[Category:Engineering]]
[[Category:Banned from conferences]]
[[Category:How to annoy]]

Talk:2739: Data Quality

2023-02-24T16:54:32Z

172.70.114.78:

Hash tables aren't lossy, maybe Randall means hash functions? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:06, 17 February 2023 (UTC)
:I was thinking more a (subset of) a {{w|Rainbow table}}, than an associative array... Although such things tend not to preserve/respect item order (in reading, writing and altering in general), which is potentially information-lossy. [[Special:Contributions/172.69.79.185|172.69.79.185]] 18:50, 17 February 2023 (UTC)
::Hash tables have an ultra-low collision rate, as compared to the transforms used in packetwise error-correction... Since the comic is primarily focused on contrasting media fidelity with direct alteration of the content, ciphers seem a less direct association than content distribution networks? Given the context presented, my immediate association was the use of both piece & whole-pack hash verification, which has a collision rate so low terms like "number of particles in the universe" start entering the conversation. Upon further consideration, I wonder if Randall is referring to plain old CRC32 hash checking? Or the SHA hashes commonly used to verify disc downloads? (If it passes SHA *and* torrent content checking, I'd say you've probably got better chances of 1:1 integrity, than any original medium has of retaining it?)
::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:51, 17 February 2023 (UTC)
: Maybe it was to be about '''cuckoo filters''', which are probabilistic data structure alternative to classic Bloom filter, which are based on space-efficient variants of cuckoo hashing? --[[User:JakubNarebski|JakubNarebski]] ([[User talk:JakubNarebski|talk]]) 14:05, 20 February 2023 (UTC)
::Hash tables don't have to store the original data at all, technically; they are commonly done as hash table->KEY:DATA or hash table->KEY:Pointer to data (or suchlike), but hash table->present is a valid hashing scheme, which results in a likely verification that you have the right data (but not guarunteed because collisions) but no way of reconstructing the data itself. [[User:Mneme|Mneme]] ([[User talk:Mneme|talk]]) 02:25, 21 February 2023 (UTC)
:He’s casually referring to the hash conflict situation in common implementations of hash tables: the table of hashes, not the whole structure. You have O(n) lookup speed proportional to the impact of uniqueness lost in the hash lookup. The point is that this is the same way that bloom filters {which also usually need a source of truth to be useful) are used. The two concepts perform the same function but with different degrees of lossiness, different widenesses of matching. [[Special:Contributions/162.158.62.140|162.158.62.140]] 16:40, 24 February 2023 (UTC) EDIT: it also leaves it ambiguous that it could mean a table of hash functions outputs as you suggest, where hashes have often been thought of as uniquely identifying data that is not recoverable (this does require a sufficiently constrained situation but is often used), where bloom filterd are thought of as ambiguously referring to multiple items. I can imagine it being more clear to leave out the word table. [[Special:Contributions/172.70.114.78|172.70.114.78]] 16:48, 24 February 2023 (UTC)

GIF's aren't lossy either, though often other formats can't be converted to GIF without discarding information. [[User:Bemasher|Bemasher]] ([[User talk:Bemasher|talk]]) 18:27, 17 February 2023 (UTC)
:I think that's the point. [[Special:Contributions/172.68.50.203|172.68.50.203]] 20:12, 17 February 2023 (UTC)
:GIFs are lossy in the very act of creating them: the actual colors of the real object have to be smashed down into (I think it’s) 256 different colors, resulting in an image that even human perception recognizes as crappy. Even the so-called ‘lossless’ formats such as PNG are lossy in the act of creation, just not as drastically as GIFs. A truly ‘lossless’ format would have to specify the exact intensity of every wavelength of electromagnetic radiation emanating from every atom of the original object. Good luck with that. [[Special:Contributions/172.71.151.99|172.71.151.99]] 01:00, 18 February 2023 (UTC)
::It's subjective whether formats (even .gif) can be recognised as 'crappy'. The display format may further tune down everything so that something defined with 65536 colours is more like 256, or it could work well with any given stippling/halftoning/dithering to produce something more like the better original than the file data strictly allows (even from 6bits-per-pixel, or 3) when viewed at sufficient remove. And a .gif of a block-coloured diagram is notably better than a typical .jpg of one, despite the technically superior palette the later has. (Nobody says that an image has to be from a real-life subject, with all kinds of missing data, such as photons thst happen to hit the gap between CCD pixels but might be considered important and might well have been captured with the Mk 1 Eyeball and significantly 'noticed' by the nerves and ultimately the respective processing usters of the brain behind it... Which has a complete set of 'analogue lossiness' to it, anyway.) [[Special:Contributions/172.71.242.203|172.71.242.203]] 16:37, 18 February 2023 (UTC)
:I encoded the records you wanted transferred to your department's systems into a standard GIF format file. Would you prefer an MJPEG video? [[Special:Contributions/172.70.114.79|172.70.114.79]] 16:51, 24 February 2023 (UTC) EDIT: You're right, though. Maybe Randall has experience with color loss using GIF. In the 90's GIF was a compressed photography format, smaller than BMP. 16:54, 24 February 2023 (UTC)
Someone needs to add a table describing all the formats in the chart. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 19:29, 17 February 2023 (UTC)
:Yep. It needs a description of each point on the graph. I'm on my phone though... and feeling lazy after shoveling snow.
:[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:54, 17 February 2023 (UTC)
::I'm tempted, but it would require learning how to MAKE a table, and my ideal table would be 5 columns, '''''TOO WIDE!''''', LOL! Table label, what scale (data quality or item quality), a description (the main thing needed), the cat version from the Title Text, and finally how the cat example applies/parallels the comic version. I could lose the "what scale" as only one isn't data quality, and I guess I could see two tables, Comic and Title/Cat (adding to cat also the Table Label column).[[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 06:38, 19 February 2023 (UTC)
:::Tables are actually [https://mediawiki.org/wiki/Help:Tables quite easy to do] (if you don't intend to do much complex stuff), but also very easy to slightly mess up (temporarily - Preview is your friend, especially if you need to rowspan/colspan at all). For this purpose, nothing fancy. Header row, other rows, nothing particar special in alignment, sorting, colour (foreground and/or background), etc. It'll be fairly intelligently fitted to the browser window, according to the contents.
:::However, here (when you might have large amounts of narrative in one column), perhaps just ";"-prefix a mini-header (can include "(in Title text)" or other shorthand details) and then have ":"-prefixed 'definition' prose that rambles on about each item in freehand text. I would suggest that's as complicated as you need it, no real need for tabling at all. (But, without wanting to show you how to use a hammer, then making every problem now look like a nail to you, I think you could handle ''learning'' the basic table-markup/learning where to get the more complex stuff. So there you are.) [[Special:Contributions/172.70.91.197|172.70.91.197]] 16:54, 19 February 2023 (UTC)
::::Oh, I've done tables in HTML many times, I'm perfectly comfortable tackling it. It's just that I'd have to take the time to look up the wiki syntax. :) Additional effort, you see. And now someone has already done it. :) [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 15:41, 21 February 2023 (UTC)

It seems there are two definitions of data quality that Randall is juxtaposing for comic effect: in one, quality data is data that represents the original phenomenon without error or degradation. In the other, he's applying the concept of quality to the phenomenon itself – data is better if it describes a better phenomenon. My cat is better than your cat, therefore data about my cat is better than data about your cat. I'd like to see this concept in the explanation of the page but don't know how to add into the flow of the current text.[[User:K95|K95]] ([[User talk:K95|talk]]) 19:33, 17 February 2023 (UTC)
:I already put that in earlier. See the second sentence of the second paragraph, I called it "general excellence". [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 21:45, 17 February 2023 (UTC)

"Data are transferred in bits"...Hear, hear. I'm over 60, I still remember of stuff that is called "analog" ;-) {{unsigned|172.71.160.37|20:07, 17 February 2023 (UTC)}}
:Note, however, that we are transferring data digitally for over four thousand years. That's how long is technically possible to make a lossless copy of written story. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 22:19, 17 February 2023 (UTC)
::That's only if you're lucky enough to be still reading it in the original <s>Klingon</s> language, etc... [[Special:Contributions/172.69.79.184|172.69.79.184]] 22:53, 17 February 2023 (UTC)
:::'''"It is a Klingon name!"''' 😾
:::Transcription definitely suffers from a Darmok & Jalad type contextual dependency.
::: [[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:59, 17 February 2023 (UTC)

I think that "Better data" is a reference to gainful compression, and that "my better cat" doesn't specifically refer to the author but to the lyrical subject (as in poems). [[Special:Contributions/172.68.50.203|172.68.50.203]] 20:12, 17 February 2023 (UTC)

TIFF can contain a JPEG, which makes it technically a lossy format. [[Special:Contributions/172.69.109.33|172.69.109.33]] 23:26, 19 February 2023 (UTC)
:And an actual JPEG ''may'' be {{w|Lossless JPEG|lossless}}. (I still remember JPEG2000 being 'a thing', amongst the other situations mentioned there, but that wasn't even what I was thinking of whn I started this reply!) Yet, I think we're talking broad sweeps here. Not strict accuracy. There's Randall's trolling of us with GIF as 'lossy', frexample... [[Special:Contributions/172.69.79.159|172.69.79.159]]

The opening sentence of the explanation, about data loss in transit, seems a bit irrelevant to the comic, which is only concerned with lossiness in information due to format. [[Special:Contributions/172.70.91.197|172.70.91.197]] 10:40, 20 February 2023 (UTC)
:''Very'' relevent to the parity ones. (Leads me to believe it's a scale of "amount of provided data to represent original data". You send less than you really ought to, the more left you go, you send more than you should ''technically'' need to as you go to the right. Checksums add a little bit extra, once you get to them, and ''correcting'' checksums (hamming bits, etc) are significantly extra overhead. The whole 'better data' is basically "send a similar amount of newer information, or even more, on top of the original".) [[Special:Contributions/162.158.34.71|162.158.34.71]] 12:55, 20 February 2023 (UTC)
:: But that's about adding information to the file (which happens to be mitigation against the potential future loss of data) - not directly about the loss of data itself. [[Special:Contributions/172.71.178.65|172.71.178.65]] 11:23, 22 February 2023 (UTC)
::: Data can be lost (deliberately or otherwise) in the process of transfering data. That's where parity may be useful, and that's when boiling things down into hashes alone probably is not... But you may actually have good reasons/circumstances to do (or not do) either. [[Special:Contributions/172.70.85.224|172.70.85.224]] 19:20, 22 February 2023 (UTC)

Since when is CRC-32 obsolete? [[Special:Contributions/162.158.238.6|162.158.238.6]] 08:24, 22 February 2023 (UTC)

Talk:2739: Data Quality

2023-02-24T16:48:41Z

172.70.114.78:

Hash tables aren't lossy, maybe Randall means hash functions? [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 17:06, 17 February 2023 (UTC)
:I was thinking more a (subset of) a {{w|Rainbow table}}, than an associative array... Although such things tend not to preserve/respect item order (in reading, writing and altering in general), which is potentially information-lossy. [[Special:Contributions/172.69.79.185|172.69.79.185]] 18:50, 17 February 2023 (UTC)
::Hash tables have an ultra-low collision rate, as compared to the transforms used in packetwise error-correction... Since the comic is primarily focused on contrasting media fidelity with direct alteration of the content, ciphers seem a less direct association than content distribution networks? Given the context presented, my immediate association was the use of both piece & whole-pack hash verification, which has a collision rate so low terms like "number of particles in the universe" start entering the conversation. Upon further consideration, I wonder if Randall is referring to plain old CRC32 hash checking? Or the SHA hashes commonly used to verify disc downloads? (If it passes SHA *and* torrent content checking, I'd say you've probably got better chances of 1:1 integrity, than any original medium has of retaining it?)
::[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:51, 17 February 2023 (UTC)
: Maybe it was to be about '''cuckoo filters''', which are probabilistic data structure alternative to classic Bloom filter, which are based on space-efficient variants of cuckoo hashing? --[[User:JakubNarebski|JakubNarebski]] ([[User talk:JakubNarebski|talk]]) 14:05, 20 February 2023 (UTC)
::Hash tables don't have to store the original data at all, technically; they are commonly done as hash table->KEY:DATA or hash table->KEY:Pointer to data (or suchlike), but hash table->present is a valid hashing scheme, which results in a likely verification that you have the right data (but not guarunteed because collisions) but no way of reconstructing the data itself. [[User:Mneme|Mneme]] ([[User talk:Mneme|talk]]) 02:25, 21 February 2023 (UTC)
:He’s casually referring to the hash conflict situation in common implementations of hash tables: the table of hashes, not the whole structure. You have O(n) lookup speed proportional to the impact of uniqueness lost in the hash lookup. The point is that this is the same way that bloom filters {which also usually need a source of truth to be useful) are used. The two concepts perform the same function but with different degrees of lossiness, different widenesses of matching. [[Special:Contributions/162.158.62.140|162.158.62.140]] 16:40, 24 February 2023 (UTC) EDIT: it also leaves it ambiguous that it could mean a table of hash functions outputs as you suggest, where hashes have often been thought of as uniquely identifying data that is not recoverable (this does require a sufficiently constrained situation but is often used), where bloom filterd are thought of as ambiguously referring to multiple items. I can imagine it being more clear to leave out the word table. [[Special:Contributions/172.70.114.78|172.70.114.78]] 16:48, 24 February 2023 (UTC)

GIF's aren't lossy either, though often other formats can't be converted to GIF without discarding information. [[User:Bemasher|Bemasher]] ([[User talk:Bemasher|talk]]) 18:27, 17 February 2023 (UTC)
:I think that's the point. [[Special:Contributions/172.68.50.203|172.68.50.203]] 20:12, 17 February 2023 (UTC)
:GIFs are lossy in the very act of creating them: the actual colors of the real object have to be smashed down into (I think it’s) 256 different colors, resulting in an image that even human perception recognizes as crappy. Even the so-called ‘lossless’ formats such as PNG are lossy in the act of creation, just not as drastically as GIFs. A truly ‘lossless’ format would have to specify the exact intensity of every wavelength of electromagnetic radiation emanating from every atom of the original object. Good luck with that. [[Special:Contributions/172.71.151.99|172.71.151.99]] 01:00, 18 February 2023 (UTC)
::It's subjective whether formats (even .gif) can be recognised as 'crappy'. The display format may further tune down everything so that something defined with 65536 colours is more like 256, or it could work well with any given stippling/halftoning/dithering to produce something more like the better original than the file data strictly allows (even from 6bits-per-pixel, or 3) when viewed at sufficient remove. And a .gif of a block-coloured diagram is notably better than a typical .jpg of one, despite the technically superior palette the later has. (Nobody says that an image has to be from a real-life subject, with all kinds of missing data, such as photons thst happen to hit the gap between CCD pixels but might be considered important and might well have been captured with the Mk 1 Eyeball and significantly 'noticed' by the nerves and ultimately the respective processing usters of the brain behind it... Which has a complete set of 'analogue lossiness' to it, anyway.) [[Special:Contributions/172.71.242.203|172.71.242.203]] 16:37, 18 February 2023 (UTC)

Someone needs to add a table describing all the formats in the chart. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 19:29, 17 February 2023 (UTC)
:Yep. It needs a description of each point on the graph. I'm on my phone though... and feeling lazy after shoveling snow.
:[[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:54, 17 February 2023 (UTC)
::I'm tempted, but it would require learning how to MAKE a table, and my ideal table would be 5 columns, '''''TOO WIDE!''''', LOL! Table label, what scale (data quality or item quality), a description (the main thing needed), the cat version from the Title Text, and finally how the cat example applies/parallels the comic version. I could lose the "what scale" as only one isn't data quality, and I guess I could see two tables, Comic and Title/Cat (adding to cat also the Table Label column).[[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 06:38, 19 February 2023 (UTC)
:::Tables are actually [https://mediawiki.org/wiki/Help:Tables quite easy to do] (if you don't intend to do much complex stuff), but also very easy to slightly mess up (temporarily - Preview is your friend, especially if you need to rowspan/colspan at all). For this purpose, nothing fancy. Header row, other rows, nothing particar special in alignment, sorting, colour (foreground and/or background), etc. It'll be fairly intelligently fitted to the browser window, according to the contents.
:::However, here (when you might have large amounts of narrative in one column), perhaps just ";"-prefix a mini-header (can include "(in Title text)" or other shorthand details) and then have ":"-prefixed 'definition' prose that rambles on about each item in freehand text. I would suggest that's as complicated as you need it, no real need for tabling at all. (But, without wanting to show you how to use a hammer, then making every problem now look like a nail to you, I think you could handle ''learning'' the basic table-markup/learning where to get the more complex stuff. So there you are.) [[Special:Contributions/172.70.91.197|172.70.91.197]] 16:54, 19 February 2023 (UTC)
::::Oh, I've done tables in HTML many times, I'm perfectly comfortable tackling it. It's just that I'd have to take the time to look up the wiki syntax. :) Additional effort, you see. And now someone has already done it. :) [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 15:41, 21 February 2023 (UTC)

It seems there are two definitions of data quality that Randall is juxtaposing for comic effect: in one, quality data is data that represents the original phenomenon without error or degradation. In the other, he's applying the concept of quality to the phenomenon itself – data is better if it describes a better phenomenon. My cat is better than your cat, therefore data about my cat is better than data about your cat. I'd like to see this concept in the explanation of the page but don't know how to add into the flow of the current text.[[User:K95|K95]] ([[User talk:K95|talk]]) 19:33, 17 February 2023 (UTC)
:I already put that in earlier. See the second sentence of the second paragraph, I called it "general excellence". [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 21:45, 17 February 2023 (UTC)

"Data are transferred in bits"...Hear, hear. I'm over 60, I still remember of stuff that is called "analog" ;-) {{unsigned|172.71.160.37|20:07, 17 February 2023 (UTC)}}
:Note, however, that we are transferring data digitally for over four thousand years. That's how long is technically possible to make a lossless copy of written story. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 22:19, 17 February 2023 (UTC)
::That's only if you're lucky enough to be still reading it in the original <s>Klingon</s> language, etc... [[Special:Contributions/172.69.79.184|172.69.79.184]] 22:53, 17 February 2023 (UTC)
:::'''"It is a Klingon name!"''' 😾
:::Transcription definitely suffers from a Darmok & Jalad type contextual dependency.
::: [[User:ProphetZarquon|ProphetZarquon]] ([[User talk:ProphetZarquon|talk]]) 22:59, 17 February 2023 (UTC)

I think that "Better data" is a reference to gainful compression, and that "my better cat" doesn't specifically refer to the author but to the lyrical subject (as in poems). [[Special:Contributions/172.68.50.203|172.68.50.203]] 20:12, 17 February 2023 (UTC)

TIFF can contain a JPEG, which makes it technically a lossy format. [[Special:Contributions/172.69.109.33|172.69.109.33]] 23:26, 19 February 2023 (UTC)
:And an actual JPEG ''may'' be {{w|Lossless JPEG|lossless}}. (I still remember JPEG2000 being 'a thing', amongst the other situations mentioned there, but that wasn't even what I was thinking of whn I started this reply!) Yet, I think we're talking broad sweeps here. Not strict accuracy. There's Randall's trolling of us with GIF as 'lossy', frexample... [[Special:Contributions/172.69.79.159|172.69.79.159]]

The opening sentence of the explanation, about data loss in transit, seems a bit irrelevant to the comic, which is only concerned with lossiness in information due to format. [[Special:Contributions/172.70.91.197|172.70.91.197]] 10:40, 20 February 2023 (UTC)
:''Very'' relevent to the parity ones. (Leads me to believe it's a scale of "amount of provided data to represent original data". You send less than you really ought to, the more left you go, you send more than you should ''technically'' need to as you go to the right. Checksums add a little bit extra, once you get to them, and ''correcting'' checksums (hamming bits, etc) are significantly extra overhead. The whole 'better data' is basically "send a similar amount of newer information, or even more, on top of the original".) [[Special:Contributions/162.158.34.71|162.158.34.71]] 12:55, 20 February 2023 (UTC)
:: But that's about adding information to the file (which happens to be mitigation against the potential future loss of data) - not directly about the loss of data itself. [[Special:Contributions/172.71.178.65|172.71.178.65]] 11:23, 22 February 2023 (UTC)
::: Data can be lost (deliberately or otherwise) in the process of transfering data. That's where parity may be useful, and that's when boiling things down into hashes alone probably is not... But you may actually have good reasons/circumstances to do (or not do) either. [[Special:Contributions/172.70.85.224|172.70.85.224]] 19:20, 22 February 2023 (UTC)

Since when is CRC-32 obsolete? [[Special:Contributions/162.158.238.6|162.158.238.6]] 08:24, 22 February 2023 (UTC)

2741: Wish Interpretation

2023-02-22T23:11:03Z

172.70.114.78: changed incomplete tag

{{comic
| number = 2741
| date = February 22, 2023
| title = Wish Interpretation
| image = wish_interpretation_2x.png
| imagesize = 740x288px
| noexpand = true
| titletext = "I wish for everything in the world. All the people, money, trees, etc." "Are you SURE you--" "And I want you to put it in my house."
}}

==Explanation==
{{incomplete|Created by a Douchebag Genie - Do NOT delete this tag too soon.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

{{comic discussion}}

Talk:2738: Omniknot

2023-02-15T16:20:34Z

172.70.114.78:

Down the middle, that's Granny, Reef, ...(k)not sure.., ?bow line and two half hitches? and something of a plaited-knot that the name escapes me entirely right now (but an extension of the other one I can't identify). I'm sure there's a handy online catalogue of knots, to reference, though, before I try to stumble over the side-knots too. [[Special:Contributions/172.71.242.172|172.71.242.172]] 16:05, 15 February 2023 (UTC)

Binding security maximized but unbinding security minimized. RIP, tethered sailor beneath a capsized boat. [[Special:Contributions/172.70.114.78|172.70.114.78]] 16:20, 15 February 2023 (UTC)

2659: Unreliable Connection

2023-02-06T12:42:12Z

172.70.114.78: Replaced content with "Hey! Sell subscriptions, tokens, serial keys, digital downloads, video courses, softwares and licenses in a fast, easy and secure way. Only 20 Hours Left Now: $89 Life..."

Hey!

Sell subscriptions, tokens, serial keys, digital downloads, video courses, softwares and licenses in a fast, easy and secure way.

Only 20 Hours Left

Now: $89 Lifetime (Worth over $2400)
Regular: $199/Month

Grab Now: https://www.xoxourl.com/ecom20

2732: Bursa of Fabricius

2023-02-02T23:25:34Z

172.70.114.78:

{{comic
| number = 2732
| date = February 1, 2023
| title = Bursa of Fabricius
| image = bursa_of_fabricius_2x.png
| imagesize = 298x399px
| noexpand = true
| titletext = If an anatomical structure is named for a person, it means they were the only person to have it. Pierre Paul Broca had a special area of his brain that created powerful magnetic fields, enabling him to do 19th century fMRI research.
}}

==Explanation==
{{incomplete|Created by FLYING BIRD SCIENTISTS WITH TRANSPLANTED AVIAN LYMPHATIC ORGANS - Do NOT delete this tag too soon.}}
The {{w|Bursa of Fabricius}} is an organ found in birds that is necessary for the development of their immune systems.

This comic claims that the 16th century anatomist {{w|Hieronymus Fabricius}} (for whom the organ was named) had that organ and therefore was able to fly like a bird. However, despite being found only in birds, this organ does not in fact contribute directly to flight. Also given that it only exist in birds, then it is doubtful that Fabricius also independently had this same anatomical feature.

Many scientific and mathematical discoveries, including anatomical structures, are named after the people who discovered or described them. For example, the {{w|islets of Langerhans}} were discovered by Paul Langerhans. Likewise, rare diseases are often named for the doctor who first describes the disease to the medical community, or for a researcher who identifies the specifics involved. They may attempt to set their own name to it, for posterity, or they are later honoured in this manner by those who recognise their vital contribution to the field, such as with {{w|Parkinson's disease#History|Parkinson's disease}}.

In other cases, rare diseases are named for the first or most famous (possibly even the only) person known to have had the disease. For instance {{w|ALS}} is commonly known as Lou Gehrig's disease in the US because of baseball player {{w|Lou Gehrig}} having notably developed the condition. Outside of the US, it may be more known just as "amyotrophic lateral sclerosis" (alternatively "motor neurone disease") or, for simplicity, the initials ALS (or MND).

The title text continues with the idea from the comic claiming that anatomical structures are solely possessed by the human for which they are named, in another similar example. {{w|Pierre Paul Broca}}, a French physician, anatomist and anthropologist, was known for his research on what is now known as {{w|Broca's area}}, a region of the brain used for speech and language processing. The premise being that, having this feature, he was uniquely gifted with the special ability to created powerful magnetic fields, enabling him to do {{w|fMRI}} research in the 19th century.

Broca did not do fMRI research, a powerful method of non-intrusively imaging and analysing the internal structures of the living human body (amongst other things), as it was not invented in his lifetime. Nor is it likely that this ability could be 'naturally' possessed by any individual, such as he. He did, however, physically study brains of known speech-impaired patients who had then subsequently died, determining what damage (in the area of the brain which was then to be named for him) was directly related to their specific group of ailments. Today, we can safely view this area in living people, using fMRI, and directly connect what we see with the current condition of patients. This increases our knowledge of the brain, as with the mythical abilities Randall gave Broca, but also possibly even allows us to help those currently under the effects of any observed damage (not necessarily possible by any 19th century physician, even with this superpowered form of vision to assist them).

In reality, if Broca was the only person to have ever possessed Broca's area then this might have meant that only he had ever had the power of speech (as we understand it), which would indeed give him a very special ability; but one begging a number of other vital questions, if only anybody else could have asked them...

This may also be a nod to the Discworld character "Bursar"[https://wiki.lspace.org/Bursar], a wizard at Unseen University who can fly because he once hallucinated that he could, and so now he can.

==Transcript==
:[An almost bald man with hair around the neck and a full beard, is shown flying in the top right part of the image, swooping down from the sky with arms outstretched in front of him while yelling. Three dotted lines behind him indicate his path. Two people look up at him from the bottom left corner, a man with a wide-brimmed hat and a black haired woman with a scarf over her hair, which is hanging down behind her. She is holding both her hands up to her mouth. At the top of the panel there is text:]
:The '''''bursa of Fabricius''''' is a lymphoid organ found only in birds and in 16th century anatomist Hieronymus Fabricius, to whom it conferred the power of flight.
:Hieronymus Fabricius: ''Wheee''

{{comic discussion}}

[[Category:Comics featuring real people]]
[[Category:Characters with hats]]
[[Category:Biology]]
[[Category:Animals]]

2712: Gravity

2022-12-17T21:41:43Z

172.70.114.78: /* Celestial Bodies */

{{comic
| number = 2712
| date = December 16, 2022
| title = Gravity
| image = gravity_2x.png
| imagesize = 740x700px
| noexpand = true
| titletext = It's a long way down.
}}

*To experience the interactivity, visit the [http://xkcd.com/2712/ original comic].
==Explanation==
{{incomplete|Created by HOTBLACK DESIATO'S TAX RETURNS - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
In this interactive comic, the viewer pilots a small spaceship throughout a vast area in space. The viewer is capable of exploring various bodies and planets within the play area, many containing easter eggs alluding to What If? 2 and previous xkcd comics. The flight mechanics are largely, if not entirely, Newtonian, so the vessel is capable of using the gravity of planets to alter its trajectory or even enter orbit. The spaceship has several indicator circles around it which appear when a gravitational body comes into range, showing the direction towards their center of gravity.

The arrow keys rotate the spaceship and accelerate it forward and backward. On mobile the comic will full screen, pressing either side of the center rotates the spaceship, and pressing in the center accelerates it forward. There is no way to accelerate backward on mobile.

It is fairly easy to fly between planets as long as you pay attention to orbital mechanics don't just floor the accelerator. The background stars show your velocity and orientation relative to the nearest gravity well. If you are having difficulties navigating space, point towards a gravity orb and accelerate for only a few seconds. Wait until the background stars spin wildly, and then reduce your velocity to 0 before genitally accelerating towards to object.

Throughout the play area are coins that change the spaceship into different rockets and non-space based vehicles, including humans.

The comic promotes Randall's new book [https://xkcd.com/what-if-2/ What If? 2], which was released in September and is available for purchase. Many of the planets contain references to various What If? articles.

The comic is similar to [[1608: Hoverboard]], which celebrated Thing Explainer instead.

===Celestial Bodies===

The following is an incomplete table of features:

{|class="wikitable sortable"
!
!
!
!
! colspan="4"|References
!
|-
! ID
! Description
! Transcript
! Tiles (X, Y)
! What If
! XKCD
! Movies
! Other
! Explanation
|-
|<code>origin</code>
|'''Starting planet'''
|
|(0, 0)
|
|
|
|
|The starting planet. The player begins on the launch pad in a landed position. Collecting the orbiting cannonball will transform you into a more advanced rocket.
|-
|<code>earth</code>
|'''Earth'''
|
|(27867,-35648)
|
|
|
|
|A planet with among other things; a crane dropping a comet onto a dinosaur, unusually high speed squirrels, Megan inviting Cueball into a pool, a region where the frame rate is intentionally limited, a flagpole, a literal rabbithole referencing the figuratively speaking rabbit hole, someone aiming at a satellite with an arrow, a lake with an eel, the earth-moon firepole, a volcano, two figures being attacked by a third with a sword, two kids playing soccer (Catching the ball will turn the ship into a soccer ball), a farmer on a tractor being stuck in what seems elastic earth, a banana pile, Megan and Cueball digging a hole (in the center of this planet is the "earth's core" referenced below, the Niagara Falls water being redirected into the LHC, Japan(?) leaving earth, a tube to the bottom of the ocean and a reference to everyoneorjustme.com
|-
|
|Earth's core
|
|
|
|
|
|
|[[Cueball]] and [[Megan]] floating in a small space in the center of the planet in inverted rotations.
|-
|<code>europa</code>
|'''Europa'''
|
|(13180, -2540)
|
|
|
|
|Europa, one of Jupiter's many moons (in real life). A broken, icy crust has a single path into its core.
|-
|
|Europa's crust
|"It's so unfair we don't get to compete in EuroVision."
"The region of the solar system where liquid water can exist on the surface is the habitable zone, and the region where it can exist beneath the surface of moons is the Eurozone."

"WHIRRRR"
|
|Y
|
|
|
|Europa's crust, with a single entrance into the core demarcated by an octopus leaving a hole.
Cueball states that Europa is in the Eurozone, a pun on the ''other'' Eurozone, with liquid underneath its surface.

A roomba whirs across the icy crust.

Cueball has a hairdryer and is melting the surface of the crust. A direct reference to [https://what-if.xkcd.com/35/ What If's Hairdryer].
|-
|
|Europa's core
|
|
|
|
|
|
|A watery ocean with octopi looking out into the great unknown using telescopes. This is a reference to octopus's intelligence here on earth! There's also a secret path leading to a book club, through the wreck of the Edmund Fitzgerald.
|-
|<code>b612</code>
|'''B-612'''
|"Asteroid deflection mission to earth. The package is delivered. Commencing planetary threat neutralization."
|(2610,3700)
|
|Y
|
|
|A reference to [https://xkcd.com/618/ Asteroid]. The little prince is having his asteroid blown up as it was heading towards Earth, apparently.
|-
|<code>dogplanet</code>
|'''Dog park planet'''
|
|(1240, 11230)
|
|
|
|
|A planet with a dog park. Covered in dogs, along with dog walkers and some fences. There's a hole being dug by two dogs and a dog bone empty space in the center.
|-
|
|'''What If? 2 scenario planet'''
|
|
|
|
|
|
|
|-
|
|'''The Sun'''
|
|(-14950, 12080)
|
|
|
|
|Difficult to escape from if you hit the core.
|-
|
|Sun's core
|
|
|Y
|
|
|
|Difficult to escape from. Can be escaped by rotating around the sun until an escape-like velocity could be reached.
|-
|
|'''Soupiter'''
|"I think it's chicken noodle? Hard to tell."
|(-800, -9040)
|Y
|
|
|
|A planet made of soup, with a core. As commented by Cueball, noodle soup. Has several small versions of other planets floating around it.
|-
|<code>nojapan</code>
|'''Earth without Japan'''
|"Something is missing."
|(-7680, -5850)
|Y
|
|
|
|Earth, except it's missing japan.
|-
|<code>japanmoon</code>
|'''Just Japan'''
|
|
|Y
|
|
|
|
|-
|<code>pigeons</code>
|'''A blob labeled "Pigeons"'''
|
|(-9020, -2490)
|Y
|
|
|
|A reference to Chapter 6 of What If? 2, where it would take 1.6 x 10^25 pigeons to lift you and a chair up to the halfway point of Australia's Q1 skyscraper.
|-
|<code>enterprise</code>
|'''Starship Enterprise'''
|
|
|
|
|Y
|
|Star Trek reference
|-
|
|'''Dinosaur planet'''
|<code>qwantz</code>
| (20403,-49559)
|
|
|Y
|
|An homage to [https://www.qwantz.com/ Dinosaur Comics], a webcomic Randall has mentioned several times before. All the dinosaurs on the planet are black-and-white versions of the clip art dinosaurs in that comic. Also references the Jurassic Park movies, in which the long grass depicted is a plot point in later films.
|-
|
|'''What If? 1 scenario planet'''
|
|
|
|
|
|
|
|-
|
|'''Cat blocking traffic flowing through portals'''
|
|
|
|
|
|
|
|-
|
|'''Edge of the Universe'''
|
| ( 6081, 26138 )
|
|
|
|
|It looks like a planet labeled "edge of the universe". Outside the universe, so inside the "edge of the universe planet", is another universe, the bubble universe. Hidden entrance is between 10 and 11 'o clock.
|-
|
|'''A tree larger than the planet it's growing on'''
|
|
|
|Y
|
|
|May be a reference to [https://www.explainxkcd.com/wiki/index.php/2:_Petit_Trees_(sketch) Petit Trees]. More probably, a reference to ''The Little Prince'', a french children's novel about a traveler from a distant asteroid. In the novel, baobab trees are a serious threat to the Prince's home asteroid, as they are so large that their roots would engulf the asteroid entirely. Randall has alluded to The Little Prince numerous times before, especially in what-if articles.
|-
|
|'''Milliways'''
|
|
|
|
|Y
|
|Hitchhiker's guide to the galaxy reference
|-
|
|'''The Great Attractor'''
|
|
|
|Y
|
|
|
|-
|<code>present</code>
|'''Present'''
|"I didn't do any of my Christmas shopping yet because I was too busy drawing tiny planets."
"I'm done with my shopping! I got everyone What if? 2"

"...You got me my own book?"

"Yeah! I figured that since you wrote it, it must be right up your alley."

"It does make a good gift, though. You can get it at xkcd.com/whatif2"

"I got you this present!"

"Is it an angry bobcat?"

"It might not be."
|(22820,-18920)
|
|Y
|
|
|The XKCD cast react to giving each other What if 2? as a present. Gravity at the bottom of the missing quarter of the planet is inescapable. Black Hat gives Cueball a "gift" which he claims "might not be a bobcat", a reference to [[A-Minus-Minus]]
|-
|
|'''Black hole cluster'''
|
|
|
|
|
|
|A cluster of black holes with extremely high gravitational strength, set to the maximum of 2048. Not particularly easy to land on with multiple conflicting gravitational fields, but once landed on, rather difficult to escape.
|-
|<code>remnant</code>
|'''Remnant'''
|"All right, that's close enough"
"Oh no"

"So don't delay, act now, supplies are running out"

"In 5 billion years, the Sun will run out of fuel and suffer gigennial burnout."

"The immense gravity of the sun's remnant means that this is the tallest possible skyscraper."
|(19620, 3800)
|
|
|
|
|A stellar remnant, with high gravity (making it difficult to escape, although it's possible to achieve escape velocity by flying sideways). Has various small landmarks, including a "skyscraper" and suspension bridge. There are bombs being dropped from above the planet, with one that seems to be sledding on the planet.
|-
|<code>steerswoman</code>
|'''Steerswoman Planet'''
|"As a Steerswoman, I have to answer any question anyone asks me, or I'm expelled from the order."
"What's one question that you would be unwilling to answer?"
"Oh no."

"Handle this artifact with great care. It contains a magical wizard's potion which the ancients called 'trinitrotoluene'"
|
|
|
|
|
|A reference to the Steerswoman series of books by Rosemary Kirstein. Includes a number of references to the series, including a group of people observing a small object orbiting the planet.
|-
|<code>peeler</code>
|'''Peeler'''
|
|(-9270, 620)
|
|
|
|
|A reference to the question posed by "What If 2: Lose Weight the Slow and Incredibly Difficult Way". A large potato peeler is seen removing the earth's crust.
|}

===Ships===
{|class="wikitable sortable"
|-
! Name
! Description
! Location
! Filename
! Image
|-
|Default
|The starting ship.
|
|ship2
|
|-
| Tintin
|
| On the starting planet, relatively easy to get
| ship-tintin
|
|-
| Figure
|Stick figure
|On Goodhart
|ship-figure
|
|-
| Soccer ball
| Soccer ball shaped ship
| On Earth
|
|ship-soccerball
|
|-
|Alternative Ship
|Slightly thicker version of default ship
|
|ship1
|}

==Data Dump==

extracted from a JSON blob near the bottom of <code>https://xkcd.com/2712/comic.js</code>.
I believe this to be all the data but i'm not sure. this should probably be on a different page but i'll leave that up to the smart people
<pre style="height:10em;overflow-y:scroll;">
{
"items": {
"coin-cannonball": {
"consumable": "yes",
"effect": "transformship|ship-tintin",
"image": "coin",
"loc": [
359,
-815
],
"size": [
40,
40
]
},
"coin-figure": {
"consumable": "yes",
"effect": "transformship|ship-figure",
"image": "figure",
"loc": [
-15050,
-2984
],
"size": [
40,
40
]
},
"coin-regular": {
"consumable": "yes",
"effect": "transformship|ship2",
"image": "regular",
"loc": [
-29976,
-8077
],
"size": [
40,
40
]
},
"coin-soccerball": {
"consumable": "yes",
"effect": "transformship|ship-soccer",
"image": "soccerball",
"loc": [
15293,
11140
],
"size": [
40,
40
]
}
},
"locations": {
"b612": {
"gravity": 60,
"height": 2048,
"loc": [
2610,
3700
],
"radius": 82,
"width": 2048
},
"dogplanet": {
"gravity": 300,
"height": 2048,
"loc": [
1240,
11230
],
"radius": 337,
"width": 2048
},
"earth": {
"gravity": 21000,
"height": 16384,
"loc": [
14360,
14360
],
"radius": 3275,
"width": 16384
},
"enterprise": {
"gravity": 200,
"height": 2048,
"loc": [
1010,
30440
],
"radius": 160,
"width": 2048
},
"europa": {
"gravity": 5000,
"height": 8192,
"loc": [
13180,
-2540
],
"radius": 1625,
"width": 8192
},
"goodhart": {
"gravity": 5000,
"height": 8192,
"loc": [
-13300,
-3260
],
"radius": 1625,
"width": 8192
},
"greatattractor": {
"gravity": 450000,
"height": 4096,
"loc": [
-297000,
-125000
],
"radius": 800,
"width": 4096
},
"japanmoon": {
"gravity": 50,
"height": 2048,
"loc": [
-5930,
-5800
],
"radius": 67,
"width": 2048
},
"maw1": {
"gravity": 2000,
"height": 2048,
"loc": [
-31576,
-9077
],
"radius": 18,
"width": 2048
},
"maw10": {
"gravity": 2000,
"height": 2048,
"loc": [
-29516,
-6321
],
"radius": 15,
"width": 2048
},
"maw11": {
"gravity": 2000,
"height": 2048,
"loc": [
-29381,
-6248
],
"radius": 12,
"width": 2048
},
"maw12": {
"gravity": 2000,
"height": 2048,
"loc": [
-26832,
-5928
],
"radius": 18,
"width": 2048
},
"maw13": {
"gravity": 2000,
"height": 2048,
"loc": [
-31743,
-4724
],
"radius": 18,
"width": 2048
},
"maw14": {
"gravity": 2000,
"height": 2048,
"loc": [
-26071,
-10824
],
"radius": 18,
"width": 2048
},
"maw2": {
"gravity": 2000,
"height": 2048,
"loc": [
-30211,
-8831
],
"radius": 18,
"width": 2048
},
"maw3": {
"gravity": 2000,
"height": 2048,
"loc": [
-27975,
-8266
],
"radius": 18,
"width": 2048
},
"maw4": {
"gravity": 2000,
"height": 2048,
"loc": [
-29546,
-7971
],
"radius": 18,
"width": 2048
},
"maw5": {
"gravity": 2000,
"height": 2048,
"loc": [
-29791,
-7631
],
"radius": 18,
"width": 2048
},
"maw6": {
"gravity": 2000,
"height": 2048,
"loc": [
-29328,
-7575
],
"radius": 18,
"width": 2048
},
"maw7": {
"gravity": 2000,
"height": 2048,
"loc": [
-29700,
-7426
],
"radius": 18,
"width": 2048
},
"maw8": {
"gravity": 2000,
"height": 2048,
"loc": [
-29165,
-7160
],
"radius": 18,
"width": 2048
},
"maw9": {
"gravity": 2000,
"height": 2048,
"loc": [
-30772,
-6910
],
"radius": 18,
"width": 2048
},
"nojapan": {
"gravity": 80,
"height": 2048,
"loc": [
-7680,
-5850
],
"radius": 200,
"width": 2048
},
"origin": {
"gravity": 1500,
"height": 4096,
"loc": [
0,
0
],
"radius": 630,
"width": 4096
},
"outside": {
"gravity": 200,
"height": 16384,
"loc": [
0,
-14500
],
"radius": 125,
"width": 16384
},
"peeler": {
"gravity": 50,
"height": 2048,
"loc": [
-9270,
620
],
"radius": 40,
"width": 2048
},
"pigeons": {
"gravity": 100,
"height": 2048,
"loc": [
-9020,
-2490
],
"radius": 160,
"width": 2048
},
"present": {
"gravity": 300,
"height": 2048,
"loc": [
22820,
-18920
],
"radius": 195,
"width": 2048
},
"qwantz": {
"gravity": 1400,
"height": 4096,
"loc": [
11060,
24870
],
"radius": 850,
"width": 4096
},
"remnant": {
"gravity": 9000,
"height": 4096,
"loc": [
19620,
3800
],
"radius": 537,
"width": 4096
},
"roads": {
"gravity": 40,
"height": 16384,
"loc": [
13240,
-11510
],
"radius": 30,
"width": 16384
},
"soupiter": {
"gravity": 1300,
"height": 4096,
"loc": [
-8000,
-9040
],
"radius": 812,
"width": 4096
},
"steerswoman": {
"gravity": 600,
"height": 4096,
"loc": [
-35070,
-2500
],
"radius": 520,
"width": 4096
},
"sun": {
"gravity": 9000,
"height": 16384,
"loc": [
-14950,
12080
],
"radius": 540,
"width": 16384
}
},
"player": {
"animation": "player.png",
"animcount": 4,
"startloc": [
0,
750
],
"targetheight": 59
},
"tile_height": 1024,
"tile_source": "tile",
"tile_width": 1024
}

</pre>

==Hacks==
'''Modes''' are activated by opening the Javascript Console (F12 [Or Command-Alt-I in most browsers under Mac OS X] to open Developer Tools, then Console tab) and writing corresponding commands. 
'''Click to expand:''' 

<div class="mw-collapsible mw-collapsed leftAlign" style="width:100%">
 
*'''Speedhack:''' <code>ship.engines = "warp"</code> - Speed hacking, sets speed to 1.4x. set to "standard" to reset to normal speed
*'''Teleport to planet:''' <code>[Comic.voyager.pos.x, Comic.voyager.pos.y] = Comic.planetRects.'''''origin'''''.slice(0,2)</code> - teleport near a planet, in this example near earth. You'll still have to fly a bit towards the nearest planet to reach it. Replace '''''origin''''' with the ID of the planet you want to go to, from the table above.
*'''Teleport to coordinate:''' <code>[Comic.voyager.pos.x, Comic.voyager.pos.y] = '''''[0, -2000]'''''</code> - teleport to an exact coordinate. <code>[0, -2000]</code> happens to take you to the starting area.
*'''Chaos Mode:''' <code>ship.engines="infinite improbability drive"</code> - Seems to randomly teleports the ship
*'''Insta Death:''' <code>ship.shields = false</code> - Kill the player if they land on a planet, the code never sets it to false, so it seems to be always true.
*'''No Clip:''' <code>noclip = true</code> - Enables noclip.
*'''Select ship:''' <code>Comic.ship = "ship-tintin"</code> - Select ship (use filename from list of ships)
*'''Autorotate:''' <code>Comic.cameraRotation = false</code> - View does not rotate with ship)
*'''Goggles:''' <code>ze.goggles()</code> - returns a warning: "they do nothing!". This is a reference to Hoverboard, where ''ze.goggles()'' would give you the ability to see false walls.
</div>
 

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

Welcome!

To celebrate the world of what if? 2, here is your very own planet to explore!

Give someone the science question-and-answer book what if? 2 for Christmas:
xkcd.com/whatif2

{{comic discussion}}
[[Category:Space]]
[[Category:Book promotion]]
[[Category:Interactive comics]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Black Hat]]
[[Category:Bobcats]]

2712: Gravity

2022-12-17T21:41:12Z

172.70.114.78: /* Celestial Bodies */

{{comic
| number = 2712
| date = December 16, 2022
| title = Gravity
| image = gravity_2x.png
| imagesize = 740x700px
| noexpand = true
| titletext = It's a long way down.
}}

*To experience the interactivity, visit the [http://xkcd.com/2712/ original comic].
==Explanation==
{{incomplete|Created by HOTBLACK DESIATO'S TAX RETURNS - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
In this interactive comic, the viewer pilots a small spaceship throughout a vast area in space. The viewer is capable of exploring various bodies and planets within the play area, many containing easter eggs alluding to What If? 2 and previous xkcd comics. The flight mechanics are largely, if not entirely, Newtonian, so the vessel is capable of using the gravity of planets to alter its trajectory or even enter orbit. The spaceship has several indicator circles around it which appear when a gravitational body comes into range, showing the direction towards their center of gravity.

The arrow keys rotate the spaceship and accelerate it forward and backward. On mobile the comic will full screen, pressing either side of the center rotates the spaceship, and pressing in the center accelerates it forward. There is no way to accelerate backward on mobile.

It is fairly easy to fly between planets as long as you pay attention to orbital mechanics don't just floor the accelerator. The background stars show your velocity and orientation relative to the nearest gravity well. If you are having difficulties navigating space, point towards a gravity orb and accelerate for only a few seconds. Wait until the background stars spin wildly, and then reduce your velocity to 0 before genitally accelerating towards to object.

Throughout the play area are coins that change the spaceship into different rockets and non-space based vehicles, including humans.

The comic promotes Randall's new book [https://xkcd.com/what-if-2/ What If? 2], which was released in September and is available for purchase. Many of the planets contain references to various What If? articles.

The comic is similar to [[1608: Hoverboard]], which celebrated Thing Explainer instead.

===Celestial Bodies===

The following is an incomplete table of features:

{|class="wikitable sortable"
!
!
!
!
! colspan="4"|References
!
|-
! ID
! Description
! Transcript
! Tiles (X, Y)
! What If
! XKCD
! Movies
! Other
! Explanation
|-
|<code>origin</code>
|'''Starting planet'''
|
|(0, 0)
|
|
|
|
|The starting planet. The player begins on the launch pad in a landed position. Collecting the orbiting cannonball will transform you into a more advanced rocket.
|-
|<code>earth</code>
|'''Earth'''
|
|(27867,-35648)
|
|
|
|
|A planet with among other things; a crane dropping a comet onto a dinosaur, unusually high speed squirrels, Megan inviting Cueball into a pool, a region where the frame rate is intentionally limited, a flagpole, a literal rabbithole referencing the figuratively speaking rabbit hole, someone aiming at a satellite with an arrow, a lake with an eel, the earth-moon firepole, a volcano, two figures being attacked by a third with a sword, two kids playing soccer (Catching the ball will turn the ship into a soccer ball), a farmer on a tractor being stuck in what seems elastic earth, a banana pile, Megan and Cueball digging a hole (in the center of this planet is the "earth's core" referenced below, the Niagara Falls water being redirected into the LHC, Japan(?) leaving earth, a tube to the bottom of the ocean and a reference to everyoneorjustme.com
|-
|
|Earth's core
|
|
|
|
|
|
|[[Cueball]] and [[Megan]] floating in a small space in the center of the planet in inverted rotations.
|-
|<code>europa</code>
|'''Europa'''
|
|(13180, -2540)
|
|
|
|
|Europa, one of Jupiter's many moons (in real life). A broken, icy crust has a single path into its core.
|-
|
|Europa's crust
|"It's so unfair we don't get to compete in EuroVision."
"The region of the solar system where liquid water can exist on the surface is the habitable zone, and the region where it can exist beneath the surface of moons is the Eurozone."

"WHIRRRR"
|
|Y
|
|
|
|Europa's crust, with a single entrance into the core demarcated by an octopus leaving a hole.
Cueball states that Europa is in the Eurozone, a pun on the ''other'' Eurozone, with liquid underneath its surface.

A roomba whirs across the icy crust.

Cueball has a hairdryer and is melting the surface of the crust. A direct reference to [https://what-if.xkcd.com/35/ What If's Hairdryer].
|-
|
|Europa's core
|
|
|
|
|
|
|A watery ocean with octopi looking out into the great unknown using telescopes. This is a reference to octopus's intelligence here on earth! There's also a secret path leading to a book club, through the wreck of the Edmund Fitzgerald.
|-
|<code>b612</code>
|'''B-612'''
|"Asteroid deflection mission to earth. The package is delivered. Commencing planetary threat neutralization."
|(2610,3700)
|
|Y
|
|
|A reference to [https://xkcd.com/618/ Asteroid]. The little prince is having his asteroid blown up as it was heading towards Earth, apparently.
|-
|<code>dogplanet</code>
|'''Dog park planet'''
|
|(1240, 11230)
|
|
|
|
|A planet with a dog park. Covered in dogs, along with dog walkers and some fences. There's a hole being dug by two dogs and a dog bone empty space in the center.
|-
|
|'''What If? 2 scenario planet'''
|
|
|
|
|
|
|
|-
|
|'''The Sun'''
|
|(-14950, 12080)
|
|
|
|
|Difficult to escape from if you hit the core.
|-
|
|Sun's core
|
|
|Y
|
|
|
|Difficult to escape from. Can be escaped by rotating around the sun until an escape-like velocity could be reached.
|-
|
|'''Soupiter'''
|"I think it's chicken noodle? Hard to tell."
|(-800, -9040)
|Y
|
|
|
|A planet made of soup, with a core. As commented by Cueball, noodle soup. Has several small versions of other planets floating around it.
|-
|<code>nojapan</code>
|'''Earth without Japan'''
|"Something is missing."
|(-7680, -5850)
|Y
|
|
|
|Earth, except it's missing japan.
|-
|<code>japanmoon</code>
|'''Just Japan'''
|
|
|Y
|
|
|
|
|-
|<code>pigeons</code>
|'''A blob labeled "Pigeons"'''
|
|(-9020, -2490)
|Y
|
|
|
|A reference to Chapter 6 of What If? 2, where it would take 1.6 x 10^25 pigeons to lift you and a chair up to the halfway point of Australia's Q1 skyscraper.
|-
|<code>enterprise</code>
|'''Starship Enterprise'''
|
|
|
|
|Y
|
|Star Trek reference
|-
|
|'''Dinosaur planet'''
|<code>qwantz</code>
| (20403,-49559)
|
|
|Y
|
|An homage to [https://www.qwantz.com/ Dinosaur Comics], a webcomic Randall has mentioned several times before. All the dinosaurs on the planet are black-and-white versions of the clip art dinosaurs in that comic. Also references the Jurassic Park movies, in which the long grass depicted is a plot point in later films.
|-
|
|'''What If? 1 scenario planet'''
|
|
|
|
|
|
|
|-
|
|'''Cat blocking traffic flowing through portals'''
|
|
|
|
|
|
|
|-
|
|'''Edge of the Universe'''
|
| ( 6081, 26138 )
|
|
|
|
|It looks like a planet labeled "edge of the universe". Outside the universe, so inside the "edge of the universe planet", is another universe, the bubble universe. Hidden entrance is between 10 and 11 'o clock.
|-
|
|'''A tree larger than the planet it's growing on'''
|
|
|
|Y
|
|
|May be a reference to [https://www.explainxkcd.com/wiki/index.php/2:_Petit_Trees_(sketch) Petit Trees]. More probably, a reference to ''The Little Prince'', a french children's novel about a traveler from a distant asteroid. In the novel, baobab trees are a serious threat to the Prince's home asteroid, as they are so large that their roots would engulf the asteroid entirely. Randall has alluded to The Little Prince numerous times before, especially in what-if articles.
|-
|
|'''Milliways'''
|
|
|
|
|Y
|
|Hitchhiker's guide to the galaxy reference
|-
|
|'''The Great Attractor'''
|
|
|
|Y
|
|
|
|-
|<code>present</code>
|'''Present'''
|"I didn't do any of my Christmas shopping yet because I was too busy drawing tiny planets."
"I'm done with my shopping! I got everyone What if? 2"

"...You got me my own book?"

"Yeah! I figured that since you wrote it, it must be right up your alley."

"It does make a good gift, though. You can get it at xkcd.com/whatif2"

"I got you this present!"

"Is it an angry bobcat?"

"It might not be."
|(22820,-18920)
|
|Y
|
|
|The XKCD cast react to giving each other What if 2? as a present. Gravity at the bottom of the missing quarter of the planet is inescapable. Black Hat gives Cueball a "gift" which he claims "might not be a bobcat", a reference to [[A-Minus-Minus]]
|-
|
|'''Black hole cluster'''
|
|
|
|
|
|
|A cluster of black holes with extremely high gravitational strength, set to the maximum of 2048. Not particularly easy to land on with multiple conflicting gravitational fields, but once landed on, rather difficult to escape.
|-
|<code>remnant</code>
|'''Remnant'''
|"All right, that's close enough"
"Oh no"

"So don't delay, act now, supplies are running out"

"In 5 billion years, the Sun will run out of fuel and suffer gigennial burnout."

"The immense gravity of the sun's remnant means that this is the tallest possible skyscraper."
|(19620, 3800)
|
|
|
|
|A stellar remnant, with high gravity (making it difficult to escape, although it's possible to achieve escape velocity by flying sideways). Has various small landmarks, including a "skyscraper" and suspension bridge. There are bombs being dropped from above the planet, with one that seems to be sledding on the planet.
|-
|<code>steerswoman</code>
|'''Steerswoman Planet'''
|"As a Steerswoman, I have to answer any question anyone asks me, or I'm expelled from the order."
"What's one question that you would be unwilling to answer?"
"Oh no."

"Handle this artifact with great care. It contains a magical wizard's potion which the ancients called 'trinitrotoluene'"
|
|
|
|
|
|A reference to the Steerswoman series of books by Rosemary Kirstein. Includes a number of references to the series, including a group of people observing a small object orbiting the planet.
|-
|<code>peeler</code>
|'''Peeler'''
|
|(-9270, 620)
|
|
|
|
|A reference to the question posed by "What If 2: Lose Weight the Slow and Incredibly Difficult Way". A large potato peeler is seen removing the earths' crust.
|}

===Ships===
{|class="wikitable sortable"
|-
! Name
! Description
! Location
! Filename
! Image
|-
|Default
|The starting ship.
|
|ship2
|
|-
| Tintin
|
| On the starting planet, relatively easy to get
| ship-tintin
|
|-
| Figure
|Stick figure
|On Goodhart
|ship-figure
|
|-
| Soccer ball
| Soccer ball shaped ship
| On Earth
|
|ship-soccerball
|
|-
|Alternative Ship
|Slightly thicker version of default ship
|
|ship1
|}

==Data Dump==

extracted from a JSON blob near the bottom of <code>https://xkcd.com/2712/comic.js</code>.
I believe this to be all the data but i'm not sure. this should probably be on a different page but i'll leave that up to the smart people
<pre style="height:10em;overflow-y:scroll;">
{
"items": {
"coin-cannonball": {
"consumable": "yes",
"effect": "transformship|ship-tintin",
"image": "coin",
"loc": [
359,
-815
],
"size": [
40,
40
]
},
"coin-figure": {
"consumable": "yes",
"effect": "transformship|ship-figure",
"image": "figure",
"loc": [
-15050,
-2984
],
"size": [
40,
40
]
},
"coin-regular": {
"consumable": "yes",
"effect": "transformship|ship2",
"image": "regular",
"loc": [
-29976,
-8077
],
"size": [
40,
40
]
},
"coin-soccerball": {
"consumable": "yes",
"effect": "transformship|ship-soccer",
"image": "soccerball",
"loc": [
15293,
11140
],
"size": [
40,
40
]
}
},
"locations": {
"b612": {
"gravity": 60,
"height": 2048,
"loc": [
2610,
3700
],
"radius": 82,
"width": 2048
},
"dogplanet": {
"gravity": 300,
"height": 2048,
"loc": [
1240,
11230
],
"radius": 337,
"width": 2048
},
"earth": {
"gravity": 21000,
"height": 16384,
"loc": [
14360,
14360
],
"radius": 3275,
"width": 16384
},
"enterprise": {
"gravity": 200,
"height": 2048,
"loc": [
1010,
30440
],
"radius": 160,
"width": 2048
},
"europa": {
"gravity": 5000,
"height": 8192,
"loc": [
13180,
-2540
],
"radius": 1625,
"width": 8192
},
"goodhart": {
"gravity": 5000,
"height": 8192,
"loc": [
-13300,
-3260
],
"radius": 1625,
"width": 8192
},
"greatattractor": {
"gravity": 450000,
"height": 4096,
"loc": [
-297000,
-125000
],
"radius": 800,
"width": 4096
},
"japanmoon": {
"gravity": 50,
"height": 2048,
"loc": [
-5930,
-5800
],
"radius": 67,
"width": 2048
},
"maw1": {
"gravity": 2000,
"height": 2048,
"loc": [
-31576,
-9077
],
"radius": 18,
"width": 2048
},
"maw10": {
"gravity": 2000,
"height": 2048,
"loc": [
-29516,
-6321
],
"radius": 15,
"width": 2048
},
"maw11": {
"gravity": 2000,
"height": 2048,
"loc": [
-29381,
-6248
],
"radius": 12,
"width": 2048
},
"maw12": {
"gravity": 2000,
"height": 2048,
"loc": [
-26832,
-5928
],
"radius": 18,
"width": 2048
},
"maw13": {
"gravity": 2000,
"height": 2048,
"loc": [
-31743,
-4724
],
"radius": 18,
"width": 2048
},
"maw14": {
"gravity": 2000,
"height": 2048,
"loc": [
-26071,
-10824
],
"radius": 18,
"width": 2048
},
"maw2": {
"gravity": 2000,
"height": 2048,
"loc": [
-30211,
-8831
],
"radius": 18,
"width": 2048
},
"maw3": {
"gravity": 2000,
"height": 2048,
"loc": [
-27975,
-8266
],
"radius": 18,
"width": 2048
},
"maw4": {
"gravity": 2000,
"height": 2048,
"loc": [
-29546,
-7971
],
"radius": 18,
"width": 2048
},
"maw5": {
"gravity": 2000,
"height": 2048,
"loc": [
-29791,
-7631
],
"radius": 18,
"width": 2048
},
"maw6": {
"gravity": 2000,
"height": 2048,
"loc": [
-29328,
-7575
],
"radius": 18,
"width": 2048
},
"maw7": {
"gravity": 2000,
"height": 2048,
"loc": [
-29700,
-7426
],
"radius": 18,
"width": 2048
},
"maw8": {
"gravity": 2000,
"height": 2048,
"loc": [
-29165,
-7160
],
"radius": 18,
"width": 2048
},
"maw9": {
"gravity": 2000,
"height": 2048,
"loc": [
-30772,
-6910
],
"radius": 18,
"width": 2048
},
"nojapan": {
"gravity": 80,
"height": 2048,
"loc": [
-7680,
-5850
],
"radius": 200,
"width": 2048
},
"origin": {
"gravity": 1500,
"height": 4096,
"loc": [
0,
0
],
"radius": 630,
"width": 4096
},
"outside": {
"gravity": 200,
"height": 16384,
"loc": [
0,
-14500
],
"radius": 125,
"width": 16384
},
"peeler": {
"gravity": 50,
"height": 2048,
"loc": [
-9270,
620
],
"radius": 40,
"width": 2048
},
"pigeons": {
"gravity": 100,
"height": 2048,
"loc": [
-9020,
-2490
],
"radius": 160,
"width": 2048
},
"present": {
"gravity": 300,
"height": 2048,
"loc": [
22820,
-18920
],
"radius": 195,
"width": 2048
},
"qwantz": {
"gravity": 1400,
"height": 4096,
"loc": [
11060,
24870
],
"radius": 850,
"width": 4096
},
"remnant": {
"gravity": 9000,
"height": 4096,
"loc": [
19620,
3800
],
"radius": 537,
"width": 4096
},
"roads": {
"gravity": 40,
"height": 16384,
"loc": [
13240,
-11510
],
"radius": 30,
"width": 16384
},
"soupiter": {
"gravity": 1300,
"height": 4096,
"loc": [
-8000,
-9040
],
"radius": 812,
"width": 4096
},
"steerswoman": {
"gravity": 600,
"height": 4096,
"loc": [
-35070,
-2500
],
"radius": 520,
"width": 4096
},
"sun": {
"gravity": 9000,
"height": 16384,
"loc": [
-14950,
12080
],
"radius": 540,
"width": 16384
}
},
"player": {
"animation": "player.png",
"animcount": 4,
"startloc": [
0,
750
],
"targetheight": 59
},
"tile_height": 1024,
"tile_source": "tile",
"tile_width": 1024
}

</pre>

==Hacks==
'''Modes''' are activated by opening the Javascript Console (F12 [Or Command-Alt-I in most browsers under Mac OS X] to open Developer Tools, then Console tab) and writing corresponding commands. 
'''Click to expand:''' 

<div class="mw-collapsible mw-collapsed leftAlign" style="width:100%">
 
*'''Speedhack:''' <code>ship.engines = "warp"</code> - Speed hacking, sets speed to 1.4x. set to "standard" to reset to normal speed
*'''Teleport to planet:''' <code>[Comic.voyager.pos.x, Comic.voyager.pos.y] = Comic.planetRects.'''''origin'''''.slice(0,2)</code> - teleport near a planet, in this example near earth. You'll still have to fly a bit towards the nearest planet to reach it. Replace '''''origin''''' with the ID of the planet you want to go to, from the table above.
*'''Teleport to coordinate:''' <code>[Comic.voyager.pos.x, Comic.voyager.pos.y] = '''''[0, -2000]'''''</code> - teleport to an exact coordinate. <code>[0, -2000]</code> happens to take you to the starting area.
*'''Chaos Mode:''' <code>ship.engines="infinite improbability drive"</code> - Seems to randomly teleports the ship
*'''Insta Death:''' <code>ship.shields = false</code> - Kill the player if they land on a planet, the code never sets it to false, so it seems to be always true.
*'''No Clip:''' <code>noclip = true</code> - Enables noclip.
*'''Select ship:''' <code>Comic.ship = "ship-tintin"</code> - Select ship (use filename from list of ships)
*'''Autorotate:''' <code>Comic.cameraRotation = false</code> - View does not rotate with ship)
*'''Goggles:''' <code>ze.goggles()</code> - returns a warning: "they do nothing!". This is a reference to Hoverboard, where ''ze.goggles()'' would give you the ability to see false walls.
</div>
 

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

Welcome!

To celebrate the world of what if? 2, here is your very own planet to explore!

Give someone the science question-and-answer book what if? 2 for Christmas:
xkcd.com/whatif2

{{comic discussion}}
[[Category:Space]]
[[Category:Book promotion]]
[[Category:Interactive comics]]
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Megan]]
[[Category:Comics featuring Black Hat]]
[[Category:Bobcats]]

2708: Mystery Asterisk Destination

2022-12-08T09:47:38Z

172.70.114.78: Grammar

{{comic
| number = 2708
| date = December 7, 2022
| title = Mystery Asterisk Destination
| image = mystery_asterisk_destination_2x.png
| imagesize = 288x248px
| noexpand = true
| titletext = If you ever see the † dagger symbol with no unmatched footnote, it means the writer is saying the phrase while threatening you with a dagger.
}}

==Explanation==
{{incomplete|Created by a BOT*. Do NOT delete this tag too soon.†}}

This comic is a reference to the use of asterisks and other symbols for footnotes or endnotes. It humorously indicates that when asterisks appear after words without corresponding footnotes, they are in fact referring to this comic.

It offers closure for missing footnotes (not entirely dissimilar to [[391: Anti-Mindvirus]]), and so has an effect opposite of the unmatched parenthesis in [[859: (]].

Some terms, like {{w|A* search}} and {{w|C* algebra}}, contain asterisks that are not meant to be matched by footnotes. Instead, they are just there as a name, and read out verbally as "star". Programming languages and math use asterisks regularly for various reasons other than footnotes, such as for the multiplication operator. In these cases a single asterisk consequently constitutes no mystery asterisk.

The title text reveals that unmatched instances of † (a dagger; a symbol for a secondary footnote) are threats being made by the author to the reader with a physical dagger. As of this writing, it states "If you ever see the † dagger symbol with no '''''un'''''matched footnote…", forming a double negative. This is likely a typo. A likely reading appears to be “…dagger symbol with no matching footnote…”.

==Transcript==
:[A blank panel with text at the bottom.]
:'''*'''Whenever you see a mystery asterisk that doesn't have a matching footnote, it points here.

{{comic discussion}}

2708: Mystery Asterisk Destination

2022-12-07T19:36:54Z

172.70.114.78:

{{comic
| number = 2708
| date = December 7, 2022
| title = Mystery Asterisk Destination
| image = mystery_asterisk_destination_2x.png
| imagesize = 288x248px
| noexpand = true
| titletext = If you ever see the † dagger symbol with no unmatched footnote, it means the writer is saying the phrase while threatening you with a dagger.
}}

==Explanation==
{{incomplete|Created by a BOT* - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
A little treat from Randall to XKCD readers, offering closure to a situation where none is ordinarily found (along the vein of [[391: Anti-Mindvirus]]). Perhaps to make up for the [[859|unmatched parenthesis he willingly set loose onto the world eleven years ago]].

Any good feelings about this closure are short-lived, however, as the title text then reveals that unmatched instances of † (a dagger; a symbol for a secondary footnote) are in fact threats being made with an actual dagger.

The title text, as of writing, says "If you ever see the † dagger symbol with ''no'' unmatched footnote[...]", forming a double negative. This may be a typo.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[A blank panel with some text at the bottom.]
:'''*''' Whenever you see a mystery asterisk that doesn't have a matching footnote, it points here.

{{comic discussion}}

2708: Mystery Asterisk Destination

2022-12-07T19:36:05Z

172.70.114.78:

{{comic
| number = 2708
| date = December 7, 2022
| title = Mystery Asterisk Destination
| image = mystery_asterisk_destination_2x.png
| imagesize = 288x248px
| noexpand = true
| titletext = If you ever see the † dagger symbol with no unmatched footnote, it means the writer is saying the phrase while threatening you with a dagger.
}}

==Explanation==
{{incomplete|Created by a BOT* - Please change this comment when editing this page. Do NOT delete this tag too soon.}}
A little treat from Randall to XKCD readers, offering closure to a situation where none is ordinarily found (along the vein of [[391: Anti-Mindvirus]]). Perhaps to make up for the [[859|unmatched parenthesis he willingly set loose onto the world eleven years ago]].

Any good feelings about this closure are short-lived, however, as the title text then reveals that unmatched instances of † (a dagger; a symbol for a secondary footnote) are in fact threats being made with an actual dagger.

The title text, as of writing, says "If you ever see the † dagger symbol with ''no'' unmatched footnote", forming a double negative. This may be a typo.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[A blank panel with some text at the bottom.]
:'''*''' Whenever you see a mystery asterisk that doesn't have a matching footnote, it points here.

{{comic discussion}}

Talk:2706: Bendy

2022-12-03T22:06:53Z

172.70.114.78:

First time writing a transcript, how'd I do? [[User:IJustWantToEditStuff|IJustWantToEditStuff]] ([[User talk:IJustWantToEditStuff|talk]]) 07:40, 3 December 2022 (UTC)

Transcript is absolutely fine... Explanation, though, doesn't really explain any more than I already knew, and I still don't "get it". Maybe 'cause I'm dumb after all. [[Special:Contributions/108.162.241.129|108.162.241.129]] 15:22, 3 December 2022 (UTC)
:Perhaps it has to do with Pythagoras and stuff, that at last the “problem” of right triangles with catheti lengths of integers having hypotenuse lengths that are irrational is “solved”. —[[User:While False|While False]] ([[User:While False/explain xkcd museum|'''museum''']] | [[User talk:While False|talk]] | [[special:Contributions/While_False|contributions]] | [[special:Log/While_False|logs]] | [[Special:UserRights/While_False|rights]] | [https://www.explainxkcd.com/wiki/index.php?title=User:While_False&printable=yes printable version] | [https://www.explainxkcd.com/wiki/index.php?title=User:While_False&action=info page information] | [https://www.explainxkcd.com/wiki/index.php/Special:WhatLinksHere/User:While_False what links there] | [https://www.explainxkcd.com/wiki/index.php?title=Special:RecentChangesLinked&days=30&from=&target=User%3AWhile_False related changes] | [https://www.google.com Google search] | current time: {{CURRENTTIME}}) 15:27, 3 December 2022 (UTC)

I think this is the comic that made me realize that Randall has never been funny and I've just been checking the comic out of habit.

I think a lot of the time he’s just being silly. It doesn’t have to be super deep. It made me chuckle. Not his best, but he’s made 3 comics a week 2,706 times. They’re not all gonna be S-tier.

I suspect there's also a tie-in with comic 2509 which actually gave the formula for the area (not the volume). I suspect the length of the lines in the right-hand side including the bendy parts, are actually 5. [[Special:Contributions/162.158.106.20|162.158.106.20]] 21:06, 3 December 2022 (UTC)