explain xkcd - User contributions [en]

Talk:2741: Wish Interpretation

2023-02-23T03:04:56Z

172.70.214.151:

To all you people reading the discussion, why can't I add my own person page? I mean, is a year too new? I think I know, [[User:No Idea If There's A Character Limit LMAO|(but I'm not completely sure.)]] ([[User talk:No Idea If There's A Character Limit LMAO|talk]]) 23:29, 22 February 2023 (UTC)

:Oh, you have to have an old enough account to make one? I had been wondering how to. [[User:Thexkcdnerd|Thexkcdnerd]] ([[User talk:Thexkcdnerd|talk]]) 00:02, 23 February 2023 (UTC)

Ironically, a banknote created by a genie would be counterfeit, although the odds of legal trouble over $20 are nonetheless low. 23:43, 22 February 2023 (UTC)
:It doesn't have to be. The genie could take one away from someone, or just get one that's been lost. Also, the sentence for counterfeiting is the same regardless of the denomination. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 00:31, 23 February 2023 (UTC)
:The sentence for counterfeiting may be the same but the probability someone would actually go through the trouble of prosecuting you for $20 is much less than say $10,000 [[Special:Contributions/172.70.214.151|172.70.214.151]] 03:04, 23 February 2023 (UTC)
That's cool. Try https://what-if.xkcd.com/23/. Part 1. I need a new signature. [[User:No Idea If There's A Character Limit LMAO|(but I'm not completely sure.)]] ([[User talk:No Idea If There's A Character Limit LMAO|talk]]) 23:46, 22 February 2023 (UTC)

I would (as the genie) just teleport Black Hat to the desert. No other trickery or devastation needed. [[User:SDSpivey|SDSpivey]] ([[User talk:SDSpivey|talk]]) 00:34, 23 February 2023 (UTC)

2730: Code Lifespan

2023-01-30T02:59:35Z

172.70.214.151: /* Explanation */ replace deleted explanations

{{comic
| number = 2730
| date = January 27, 2023
| title = Code Lifespan
| image = code_lifespan_2x.png
| imagesize = 377x307px
| noexpand = true
| titletext = Surely (no one/everyone) will (recognize how flexible and useful this architecture is/spend a huge amount of effort painstakingly preserving and updating this garbage I wrote in 20 minutes)
}}

==Explanation==
{{incomplete|Created by a BOT PROGRAMMED 50 YEARS AGO (STILL YOUNGER THAN UNIX). Do NOT delete this tag too soon.}}

This comic contrasts two scenarios involving [[Ponytail]] writing a computer program: in the first panel, she has taken great care to future-proof her code, while in the second, she decides not to under the assumption it will soon be deprecated and/or replaced. The captions below each panels note that, ironically, code written with future-proofing in mind will often quickly cease to be used — defeating the purpose of future-proofing — while the code that was not will often be used much longer than the original programmer(s) intended. This is a {{w|Catch-22 (logic)|''Catch-22''}} situation that many developers have experienced, the first one even has a name, {{w|YAGNI}}.

The second panel is an allusion to the {{w|Year 2000 problem}}, although it is important to note that the problem was not simply due to developers not thinking ahead but also because the developers were working with extremely limited computer resources at the time, promoting the use of 2-digit years.

The title text is a modular sentence with two parentheticals, each containing two alternative phrases. This allows for four permutations of the sentence, each of which may be said by programmers. The following two permutations may be the hoped-for ideals of software developers:

* "Surely everyone will recognize how flexible and useful this architecture is."
* "Surely no one will spend a huge amount of effort painstakingly preserving and updating this garbage I wrote in 20 minutes."

However, reality often falls short of such hopes, in that insufficient numbers of people recognize code intended for re-use, and far more people than intended will attempt to maintain and adapt sloppy work. The latter sometimes happens because the corner-cutting peculiarities of hasty work are often seen as far deeper necessities than they actually are. The remaining two permutations (the ones that would be read first, being first to first or last to last) of the title text sentence express this far less hopeful outlook:

* "Surely no one will recognize how flexible and useful this architecture is."
* "Surely everyone will spend a huge amount of effort painstakingly preserving and updating this garbage I wrote in 20 minutes."

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

:[Two situations are depicted between Ponytail and Cueball.]

:[Ponytail standing next to Cueball, with her palm raised.]
:Ponytail: It took some extra work to build, but now we'll be able to use it for all our future projects.

:[Caption below the panel:]
:How to ensure your code is never reused

:[Nearly identical situation to the first, but with the arm raised slightly less emphatically.]
:Ponytail: Let's not overthink it; if this code is still in use '''''that''''' far in the future, we'll have bigger problems.

:[Caption below the panel:]
:How to ensure your code lives forever

{{comic discussion}}
[[Category:Comics featuring Ponytail]]
[[Category:Comics featuring Cueball]]
[[Category:Programming]]

1401: New

2023-01-07T09:15:13Z

172.70.214.151: /* Explanation */

{{comic
| number = 1401
| date = July 30, 2014
| title = New
| image = new.png
| titletext = The nice thing about headcannnons is that it's really easy to get other people to believe in them.
}}

==Explanation==
This comic strip uses a play on the {{w|homophone|homophonic}} relationship between "{{w|Canon_(fiction)|canon}}", the literary term, and "{{w|cannon}}", a projectile weapon. The word headcanon is a compound of "head" and "canon," and is a term used among online discussions that means "canon that only exists within one's head." In other words it refers to belief or theory about a fictional universe that has not, strictly speaking, been proven to be true within the fiction (some headcanons can even contradict the fiction).

In this strip, [[Black Hat]] tells [[Cueball]] that he has a "new headcannon". [[Cueball]], thinking Black Hat means "headcanon," inquires what Black Hat's new idea is. Instead of the expected idea or theory, Black Hat removes his hat to reveal a tiny cannon on his head which blows away Cueball and his computer desk.

While headcanon may often be ignored or dismissed as a personal theory, a headcannon would be far harder to ignore, as it is a physical object which has a notable (and in this case violent) impact on the real world.

In the title text Randall makes the spellings of these two words indistinguishable by using three consecutive "n"s to spell "headcannnon". Therefore, the title text is deliberately vague. It could be interpreted that it is easy to convince people that you have a cannon on your head, that it is easy to make people believe in a self invented headcanons, or both. Since you are choosing your own interpretation of this title text, the joke is that you are creating your own headcanon.

This comic also shows Cueball being once again distracted from his work in a manner similar to [[1388: Subduction License]].

===Canon===
In terms of a given literary series, "''{{w|Canon_(fiction)|canon}}''" describes a set of works that are collectively recognized by the community as having authenticity. Generally, works created or endorsed by the original author(s) are considered canonical. Not all original content is considered canon and not all canon is original content. Sometimes creators will rewrite the canon (called a {{w|retcon}}) and make things that were previously canonical non-canonical. For example, the origins of a character may be rewritten, thus invalidating the portions of the works that speak to the old origins. Other times creators will incorporate non-original content and therefore incorporate the canon of these borrowed works.

===Headcanon===
A ''headcanon'' as the name implies is a form of canon that only exists in one's mind. More specifically, a headcanon is created when a consumer watching or reading the material develops their own ideas about a fictional universe that are not actually part of the canon, perhaps developing their own backstories or experiences for characters. Some frequent examples of headcanon include relationships between characters, abilities, events following the conclusion of the work, etc. which the author or creator has not explained or included. For example, a consumer may "read between the lines" and assume that there was a previous romantic relationship between two characters where no conclusive evidence actually exists of one. Some fans who come up with particularly interesting or convincing headcanons may decide to share them with others in hopes that their idea spreads.

==Transcript==
:[Black Hat walks in.]
:Black Hat: New headcannon:

:[Cueball is sitting at his desk, using his computer.]
:Cueball: Yeah?

:[Black Hat lifts his hat, revealing his "headcannon": a tiny cannon on the top of his head. The headcannon fires and blows up Cueball's desk, the explosion throwing Cueball backwards.]
:Headcannon: '''BOOM'''
:Cueball: Augh!

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

927: Standards

2023-01-06T20:28:34Z

172.70.214.151: /* Explanation */ Minor adjustment for accuracy. It's not just iPhones that use Lightning connectors, and Lightning cables ARE actually compatible with generic USB chargers.

{{comic
| number = 927
| date = July 20, 2011
| title = Standards
| image = standards.png
| titletext = Fortunately, the charging one has been solved now that we've all standardized on mini-USB. Or is it micro-USB? Shit.
}}

==Explanation==
For any engineering task, there are numerous ways a given problem can be solved. The more complex the task, the more room for diversity. That's all well and good for a one-off problem, but if a design is meant to be iterated over time, or if an entire industry is solving that same problem, part reuse and {{w|interoperability}} become issues to deal with. {{w|Technical standards}} thus came to exist so that industries could avoid wasting resources {{w|reinventing the wheel}}, whilst offering their clients a certain amount of simplicity and compatibility between vendors.

But standards have issues of their own. They don't accommodate every {{w|Use Case|use case}}, they might have restrictions or royalties attached, and people tend to be plagued by ''{{w|Not invented here|Not Invented Here syndrome}}''. So competing standards have a tendency to arise to address different perceived needs. After a while, the market for competing standards gets messy and hard to follow, and {{w|system integration|integrating systems}} built around competing standards gets burdensome. As a result, someone eventually takes on the challenge of creating a universal standard that everyone can rally around.

This almost never works. In many cases, a new standard fails to displace the incumbent standards, eventually loses funding and support, and thus becomes a relic of history. In many other cases, it only penetrates far enough to survive, ironically making the situation messier. The latter situation often ends up becoming cyclical, with new standards periodically rising and failing to gain traction.

Three examples are given at the top of the comic: {{w|AC adapter|AC chargers}}, {{w|character encoding}} and {{w|instant messaging}}.
* Power adapters are notorious for varying from device to device - partly to try to prevent dangerous voltage/current mismatches, but partly just because manufacturers all chose different adapter designs. Mobile phone chargers had mostly converged on a common USB-based solution, but laptop charging remained still a long way out, despite the adoption of yet another standard, {{w|IEC 62700}}, and Apple mobile devices generally still use proprietary Lightning connectors. Randall notes that there was additional complexity due to the fact that there were also ''competing USB types''; thanks to the European Union's {{w|common external power supply}} specification, micro-USB has since won the day. Three years after the release of this comic, in August 2014 the {{w|USB Type-C}} specification was published and is currently displacing micro-USB, it's gaining ground among laptop manufacturers as well.
* Character encoding is, in theory, a solved problem - {{w|Unicode}} is a standard for character sets which currently includes over 135,000 characters. However, Unicode is not an encoding, just an abstract representation of the characters, and there are several implementations which encode Unicode "code points" into usable characters (including the two most common, {{w|UTF-8}} and {{w|UTF-16}}). Despite the [https://w3techs.com/technologies/history_overview/character_encoding/ms/y success of UTF-8 Unicode], older encodings like {{w|Windows-1252}} have stuck around, continuing to cause weird bugs in old software and websites to this day.
* Unlike the other examples, there has been little or no effort by instant messaging companies to make their services interoperable. There's more value to keeping IM as a {{w|closed platform}} so users are forced to use the company's software to access it. Some software, like the {{w|Trillian (software)|Trillian}} chat client, can connect to multiple different services, but there is essentially no way to, for example, send a Twitter message directly to a Skype user.

The title text mentions mini-USB and micro-USB, which were different standards used in 2011. As of 2019 for most applications of small USB ports (especially for charging / connecting cell phones), mini USB has lost most of its relevance and micro USB is competing with USB-C, as well as some solutions only used by single companies (such as Apple).

Not all {{w|technical standards|standards}} are created equal. In the development of {{w|technical standards|standards}}, private standards adopt a non-consensus process in comparison to voluntary consensus standards. Private standards in the {{w|Information and Communications Technology}} (ICT) sector and the agri-food industry (governed by the {{w|Global Food Safety Initiative}}) are discussed in a [https://docplayer.net/23885374-International-standards-and-private-standards.html publication from International Organization for Standardization.]

==Transcript==
:How Standards Proliferate
:(See: A/C chargers, character encodings, instant messaging, etc.)

:Situation:
:There are 14 competing standards.

:Cueball: 14?! Ridiculous! We need to develop one universal standard that covers everyone's use cases.
:Ponytail: Yeah!

:Soon:
:Situation: There are 15 competing standards.
{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Ponytail]]

2717: L6 Lagrange Point

2023-01-05T17:57:23Z

172.70.214.151: /* Explanation */

{{comic
| number = 2717
| date = December 27, 2022
| title = L6 Lagrange Point
| image = l6_lagrange_point_2x.png
| imagesize = 399x400px
| noexpand = true
| titletext = It's difficult to orbit L6 stably due to gravitational perturbation from Akron and Toledo.
}}

==Explanation==
{{incomplete|Created by a LANDED LAGRANGE POINT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

In celestial mechanics, the {{w|Lagrange point}}s are points of equilibrium for small-mass objects under the influence of two massive orbiting bodies. Or in simpler terms, positions in space where objects can float motionless relative to the defining bodies. The L1, L2, and L3 points are unstable, as any drifting off the point (e.g. due to the gravity of other bodies) might quickly increase the tendency to depart the area. However, there are quasi-stable {{w|Halo orbit}}s around these points, like the one used by the {{w|James Webb Space Telescope}}. The L4 and L5 points can actually retain objects stably over long periods, resulting in the Sun-Jupiter L4 and L5 points capturing the {{w|Trojan (celestial_body)|Trojan Asteroids}}.

There are five traditional Lagrange points. Two form equilateral triangles with the two massive objects (in this case the Earth and the Sun), and three more are collinear with the massive objects. Randall claims that a sixth Lagrange point has been discovered outside of {{w|Cleveland}}, {{w|Ohio}}. This is pretty obviously farcical,{{Citation needed}} as this would be part of the Earth and thus not gravitationally balanced between Earth and the Sun, though it is balanced by the countering forces that hold anything stable on the surface of any body: {{w|gravity}} and {{w|electromagnetism}}. The joke here is that there actually is a small village named {{w|LaGrange, Ohio|LaGrange, OH}} (population 2,595 in 2020) just outside Cleveland ([https://www.google.com/maps/place/Lagrange,+OH+44050/ map]). However, the village name is spelled with a capital G, unlike {{w|Joseph-Louis Lagrange}} after which the Lagrange points were named.

There is, however, a {{w|Lagrange,_Maine}}, a {{w|Lagrange,_Virginia}} and a {{w|Lagrange_Township,_Bond_County,_Illinois}} which all use the lower case g in their spelling like Joseph-Louis Lagrange. There are also {{w|https://en.wikipedia.org/wiki/Lagrange_(disambiguation)|twenty-six other communities}} in the United states with a spelling of LaGrange or La Grange, as well as four in France and two in Australia with one of the three spellings. This includes {{w|La_Grange,_Texas}} which became famous as the title of a {{w|La_Grange_(song)|ZZ Top song}}.

The title text mentions {{w|Akron}} and {{w|Toledo,_Ohio|Toledo}}, two other large cities in Ohio. It says that their gravitational influence is the reason why orbits around the LaGrange L6 are unstable. The Lagrange points are solutions for a simplified three-body system, and orbits around them may be disrupted if additional bodies such as moons or planets are close enough or massive enough to cumulatively exert significant gravitational forces over time (the Moon does factor into the Earth-Sun L1 and L2 Lagrange points, especially, but that can be accounted for in the station-keeping measures already required). Trying to orbit around a point on the ground would, of course, run into much more serious problems, {{w|lithobraking|such as the ground.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:Grey on white diagram of the Earth orbiting the Sun, not to scale. Earth is depicted as a circle with pale grey continents on darker grey seas, and shows a view from above the North Pole without any Arctic ice. The sun is drawn surrounded by radially symmetrical exaggerated wave pattern.
:Also in grey, approximate locations of Lagrange points 1 to 5 are marked with dots and labels: "L1" "L2" "L3" "L4" "L5".
:In black, a point on the Earth's surface within the boundary of a continent that could be North America. Also in black, an arrow pointing towards the point, and the label "L6".
:[Caption below the panel:]
:Huge space news: Astronomers have discovered a new Lagrange point just outside Cleveland.

{{comic discussion}}

[[Category:Astronomy]]
[[Category:Science]]

2717: L6 Lagrange Point

2023-01-05T17:56:56Z

172.70.214.151: /* Explanation */

{{comic
| number = 2717
| date = December 27, 2022
| title = L6 Lagrange Point
| image = l6_lagrange_point_2x.png
| imagesize = 399x400px
| noexpand = true
| titletext = It's difficult to orbit L6 stably due to gravitational perturbation from Akron and Toledo.
}}

==Explanation==
{{incomplete|Created by a LANDED LAGRANGE POINT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

In celestial mechanics, the {{w|Lagrange point}}s are points of equilibrium for small-mass objects under the influence of two massive orbiting bodies. Or in simpler terms, positions in space where objects can float motionless relative to the defining bodies. The L1, L2, and L3 points are unstable, as any drifting off the point (e.g. due to the gravity of other bodies) might quickly increase the tendency to depart the area. However, there are quasi-stable {{w|Halo orbit}}s around these points, like the one used by the {{w|James Webb Space Telescope}}. The L4 and L5 points can actually retain objects stably over long periods, resulting in the Sun-Jupiter L4 and L5 points capturing the {{w|Trojan (celestial_body)|Trojan Asteroids}}.

There are five traditional Lagrange points. Two form equilateral triangles with the two massive objects (in this case the Earth and the Sun), and three more are collinear with the massive objects. Randall claims that a sixth Lagrange point has been discovered outside of {{w|Cleveland}}, {{w|Ohio}}. This is pretty obviously farcical,{{Citation needed}} as this would be part of the Earth and thus not gravitationally balanced between Earth and the Sun, though it is balanced by the countering forces that hold anything stable on the surface of any body: {{w|gravity}} and {{w|electromagnetism}}. The joke here is that there actually is a small village named {{w|LaGrange, Ohio|LaGrange, OH}} (population 2,595 in 2020) just outside Cleveland ([https://www.google.com/maps/place/Lagrange,+OH+44050/ map]). However, the village name is spelled with a capital G, unlike {{w|Joseph-Louis Lagrange}} after which the Lagrange points were named.

There is, however, a {{w|Lagrange,_Maine}}, a {w|Lagrange,_Virginia}} and a {{w|Lagrange_Township,_Bond_County,_Illinois}} which all use the lower case g in their spelling like Joseph-Louis Lagrange. There are also {{w|https://en.wikipedia.org/wiki/Lagrange_(disambiguation)|twenty-six other communities}} in the United states with a spelling of LaGrange or La Grange, as well as four in France and two in Australia with one of the three spellings. This includes {{w|La_Grange,_Texas}} which became famous as the title of a {{w|La_Grange_(song)|ZZ Top song}}.

The title text mentions {{w|Akron}} and {{w|Toledo,_Ohio|Toledo}}, two other large cities in Ohio. It says that their gravitational influence is the reason why orbits around the LaGrange L6 are unstable. The Lagrange points are solutions for a simplified three-body system, and orbits around them may be disrupted if additional bodies such as moons or planets are close enough or massive enough to cumulatively exert significant gravitational forces over time (the Moon does factor into the Earth-Sun L1 and L2 Lagrange points, especially, but that can be accounted for in the station-keeping measures already required). Trying to orbit around a point on the ground would, of course, run into much more serious problems, {{w|lithobraking|such as the ground.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:Grey on white diagram of the Earth orbiting the Sun, not to scale. Earth is depicted as a circle with pale grey continents on darker grey seas, and shows a view from above the North Pole without any Arctic ice. The sun is drawn surrounded by radially symmetrical exaggerated wave pattern.
:Also in grey, approximate locations of Lagrange points 1 to 5 are marked with dots and labels: "L1" "L2" "L3" "L4" "L5".
:In black, a point on the Earth's surface within the boundary of a continent that could be North America. Also in black, an arrow pointing towards the point, and the label "L6".
:[Caption below the panel:]
:Huge space news: Astronomers have discovered a new Lagrange point just outside Cleveland.

{{comic discussion}}

[[Category:Astronomy]]
[[Category:Science]]

Talk:2712: Gravity

2022-12-16T23:57:18Z

172.70.214.151: SP.

Whatever image is supposed to be in the center isn't showing up for me! D: Tried on both Safari and Chrome but it gives me the little broken picture icon. Hopefully it's fixed soon! (The comic's been up for about 10 minutes going by when the bot updated this page.) [[Special:Contributions/172.70.126.117|172.70.126.117]] 22:28, 16 December 2022 (UTC)

: The center image is trying to load this link, but there's nothing there: https://xkcd.com/tile/ship1/ship_gliding_2x.png. I hope that gets fixed soon. The "ship" seems to rotate a bit unpredictably over time. At first I thought it was responding to my mouse movements, but I don't think so anymore. [[User:Orion205|Orion205]] ([[User talk:Orion205|talk]]) 22:34, 16 December 2022 (UTC)

: Ah, the center image is controlled by the javascript, of course: https://xkcd.com/2712/comic.js. So this is some sort of interactive comic? [[User:Orion205|Orion205]] ([[User talk:Orion205|talk]]) 22:36, 16 December 2022 (UTC)

: Okay, left/right arrow keys seem to control the rotation. I'll check back in later in hopes of seeing the ship so I have some idea what the point of it all is. [[User:Orion205|Orion205]] ([[User talk:Orion205|talk]]) 22:39, 16 December 2022 (UTC)

: And now it's working. You fly a little spaceship around the little planet. Luckily you have shields if you slam into the ground too hard. [[User:Orion205|Orion205]] ([[User talk:Orion205|talk]]) 22:43, 16 December 2022 (UTC)

: Catch the cannonball for a spaceship upgrade. Also, not so easy to find a stable orbit around this little planet. [[User:Orion205|Orion205]] ([[User talk:Orion205|talk]]) 22:49, 16 December 2022 (UTC)

You can transform the ship into a different (seems faster to me) one by running into the last cannon ball.
[[Special:Contributions/108.162.241.249|108.162.241.249]]

Rough summary: The comic is an interactive space flight game, starting landed on an origin planet. The planet is static, and the player starts in a ship controlled by WASD or Directional keys. The ship can go up and down, and rotate left and right. Game simulates orbits and gravity, making navigation tricky. Around the player ship there are dots which indicate nearby planets - there are numurous planets, each with what seem to be drawings related to the What If book. Within the browser, planets are loaded in PNG format by chunk, names formatted as "planet_0_0" with numbers incrementing as grid co-ordinates. Planets and objects found: "origin" "europa", "road", "b612". NOTE: Several hazards exist, such as a field of black holes - if flown into, the ship can become stuck if let to be pulled close to the surface, locking in place. [[Special:Contributions/172.70.110.230|172.70.110.230]] 23:13, 16 December 2022 (UTC)

: Within browser dev console exists the objects "Ship" and "Comic", the latter containing a list of all objects and coordinates, as well as various setting for the game physics and settings. Comic contains the sub-object "Voyager", which contains the details and settings for the player ship, including location, speed, etc. [[Special:Contributions/172.70.110.230|172.70.110.230]] 23:13, 16 December 2022 (UTC)

:: There are 5 ship types in the game code, each with their own consumable transformative found in the world. The ship alternatives are (ship1, ship2, ship-tintin, ship-figure, ship-soccerball). These can be changed with console command [Comic.ship = "ship1"]. Note: At current, "ship-soccerball" returns an error and does not load correctly. [[Special:Contributions/172.70.110.230|172.70.110.230]] 23:13, 16 December 2022 (UTC)

:: The "ship.shields" is a boolean value that defaults to true, and when set to false, makes the game behave in a lunar lander mode (bad landing black screens the whole page). The "ship.engine" types I see in the code are "warp" (very fast speeds) and "infinite improbability drive" (teleports to 'improbable' places). Default engine is "standard", but it seems any value that is not the former two has the same effect. --[[Special:Contributions/172.70.254.165|172.70.254.165]] 23:32, 16 December 2022 (UTC)

: In addition to Europa, the space road, and B-612, there is the "Edge of the Universe" (complete with Milliways restaurant nearby), a... tree (which is extremely hard to land on), a planet populated by the characters from Dinosaur Comics (and the main cast of Jurassic Park), the USS Enterprice (NCC 1701-C), and likely quite a bit more. Orbital mechanics make it tough to land on the smaller targets. [[Special:Contributions/172.71.254.46|172.71.254.46]] 23:07, 16 December 2022 (UTC)

:: Plus what appears to be Earth, complete with the LHC. There's a 2nd "cannonball" there for an additional ship upgrade, but at the time I found it, that graphic was unavailable. [[Special:Contributions/172.70.126.232|172.70.126.232]] 23:15, 16 December 2022 (UTC)

: I went out a long ways away, and eventually found The Great Attractor. It attracts really hard. I couldn't leave the surface. (I wasn't able to leave the center of Europa either, though, so, not saying much.) There are also some terrifying black holes (a binary system?), though something's weird about their gravity; you kinda bounce off of them a quarter screen away or so? [[Special:Contributions/108.162.216.77|108.162.216.77]] 23:10, 16 December 2022 (UTC)
:: I *think* thats a wormhole, you go in one and then out the other. I got stuck right between them. Speaking of getting stuck, there is a bug where if you hit a planet with enough gravity fast enough, the ship is inside the planet. Holding W makes you go backwards (or at least towards the center maybe?) and you can get all the way to the other end of the planet where you slow down a lot, but can eventually leave. [[Special:Contributions/172.70.82.166|172.70.82.166]] 23:19, 16 December 2022 (UTC)Bumpf

::There's one planet that's supposed to be the "remnant of the sun", is that what you mean with The Great Attractor? (It has a bridge on it with a coin(?) blocking part of the way, and a space ship actively crashing into its surface, drawn as several frames.) You can leave that by skidding over the surface like a skipping stone to gather momentum - it's tricky, due to various obstacles, but possible! (It's possible you need two ship power-ups?! If they're indeed power-ups and not just aesthetic changes, I didn't pay attention.)
::Screenshot of [https://imgur.com/a/NZulBlb the Enterprise] and [https://imgur.com/2VSZYp7 Dinosaur Comics planet]. Sorry for the broken image in the middle, I picked up two powerups and [https://xkcd.com/2712/tile/ship-soccerball/ship_landing_down_2x.png my current ship image is broken]. -(pinkgothic) [[Special:Contributions/172.68.110.143|172.68.110.143]] 23:22, 16 December 2022 (UTC)
:::[https://i.imgur.com/fLU1cWy.png Dog Park planet] [[Special:Contributions/172.71.254.114|172.71.254.114]] 23:28, 16 December 2022 (UTC)

Using a tablet (no keyboard, but seems to respond to touch), controls are confusing. Presuming that touching bottom left activates left-rotate and touching bottom right does right-rotate (can't see the presumably white-lije controls over the white planet) but I can't get ''thrust'' anything but 'reverse' into the planet centre. No obvious top-edge hotspots, either. Maybe I need to do a "You will not go to space today" and then reverse ''upward''... BRB, after a bit more testing, though... [[Special:Contributions/172.69.79.185|172.69.79.185]] 23:39, 16 December 2022 (UTC)
:Ok, the next go went 'better'. The browser keeps wanting to load "simplified content", but if I ignore that I can get full-screen, at one point I changed rocket-type (no idea how, can't do it again) and I ''easily'' get off the planet (hard to thrust just enough to get to the Hooke comment/cannon), with plenty of targets coming in range (but cannot slow down enough to not have it glitch and rebuild a totally new set of targets that I never can reach). Will try desktop version when I'm next on a suitable one... Looks to be a lot of interesting content. [[Special:Contributions/162.158.74.30|162.158.74.30]] 23:53, 16 December 2022 (UTC)

Using the developer console, the ship can be teleported to different coordinates via console command [Comic.voyager.pos.x = 0, Comic.voyager.pos.y = -1461], provided here with start location coordinates. This can be used for manual navigation to known coordinates. List of locations per game code added below, append landing X,Y to each as determined. [[Special:Contributions/172.70.110.230|172.70.110.230]] 23:42, 16 December 2022 (UTC)

b612: [x,y] dogplanet: [x,y] earth: [x,y] enterprise: [x,y] europa: [x,y] goodhart: [x,y] greatattractor: [x,y] japanmoon: [x,y] maw1: [x,y] maw2: [x,y] maw3: [x,y] maw4: [x,y] maw5: [x,y] maw6: [x,y] maw7: [x,y] maw8: [x,y] maw9: [x,y] maw10: [x,y] maw11: [x,y] maw13: [x,y] maw14: [x,y] nojapan: [x,y] origin: [0, -1461] peeler: [x,y] pigeons: [x,y] present: [x,y] remnant: [x,y] roads: [x,y] soupiter: [x,y] steerswoman: [x,y] sun: [x,y]

In your developer console, enter <code>window.ship.engines = 'infinite improbability drive'</code> and pressing up will randomly teleport you to interesting places.
<code>window.ship.engines = 'warp'</code> will let you escape normally inescapable objects.

; Proposal
It seems the most explanatory thing we can do is replace the blank starfield with the starting image screenshot, and label its four corners with their x and y coordiates, and then make a table of all the objects with their coordinates, a screenshot, and a description of their behaviors. [[Special:Contributions/172.70.206.204|172.70.206.204]] 23:55, 16 December 2022 (UTC)

Talk:2707: Astronomy Numbers

2022-12-06T20:01:02Z

172.70.214.151: Maybe

First time I've ever seen a completely blank page. [[User:IJustWantToEditStuff|IJustWantToEditStuff]] ([[User talk:IJustWantToEditStuff|talk]]) 20:27, 5 December 2022 (UTC)
:Everyone's enthralled by ChatGPT. [[Special:Contributions/172.69.22.35|172.69.22.35]] 04:01, 6 December 2022 (UTC)

It's also notable that something weighting 12 solar masses will collapse into black hole on it's own, unless it resist collapse through thermal pressure like stars. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 21:26, 5 December 2022 (UTC)
: But not cats, because cats have hair, and [https://en.wikipedia.org/wiki/No-hair_theorem black holes have no hair]. [[Special:Contributions/172.71.186.94|172.71.186.94]] 18:06, 6 December 2022 (UTC)

The Earth moves relative to the sun at 66,000 MPH. In what frame of reference is it 65 MPH? It isn't like Randall to get a number wrong. Maybe the magnitude of the distance from Earth to Sun changes at a closer rate, but even this is nearly 180 MPH if I'm calculating correctly. [[User:Mannerisky|Mannerisky]] ([[User talk:Mannerisky|talk]]) 21:37, 5 December 2022 (UTC)
: You're thinking orbital speed, she's talking orbital oscillation. That is, the speed at which the distance between earth and sun changes. [[Special:Contributions/198.41.242.240|198.41.242.240]] 21:51, 5 December 2022 (UTC) ADDITION: Orbital oscillation has both a mean/average factor and a current factor (which is at it slowest while at the apsides, and given the context the one being calculated) [[Special:Contributions/198.41.242.85|198.41.242.85]] 22:46, 5 December 2022 (UTC)

I get the sense that the thing that they're planning for January 1st is a precisely-timed new year's party and nothing to do with space exploration. {{unsigned|172.71.242.156}}

; Obligatory ChatGPT explanation

:'''Me:''' The following is a transcript from the latest xkcd comic. Please write an explanation of the comic: ''[transcript copied verbatim from [https://www.explainxkcd.com/wiki/index.php?title=2707:_Astronomy_Numbers&oldid=300614#Transcript its current state] omitted]''

:'''[https://chat.openai.com/chat ChatGPT:]''' In the xkcd comic, Ponytail and Cueball are discussing Earth's orbit around the sun. Ponytail notes that Earth will be approaching the sun at a rate of 65 miles per hour on January 1st. Cueball responds, "Weird?" Ponytail explains that they usually see only complex and incomprehensible numbers in astronomy, and seeing a "normal" number like 65 miles per hour feels wrong to them. This reflects the common perception that numbers in the sciences, especially astronomy, are often complex and difficult to understand. Earlier in the comic, Ponytail also expresses skepticism at a "normal" number when Megan in coat tells them that their cat weighs 12 lbs. Ponytail suggests that it must actually weigh either 10-20 or 1040 instead. Megan responds by saying that the cat's weight is actually 3x10-30 solar masses, which Ponytail finds more acceptable.

I wish superscipts would survive copy-paste, but I have to admit it's better than the esoterica-laden verbosity that's up now.
::Superscripts? You could have easily added the <nowiki></nowiki>''whatever''<nowiki></nowiki> to your copypasta. Not much work (much less work than my having to <nowiki><nowiki></nowiki> this explanation for you), especially given how much other typing you seem to have done... [[Special:Contributions/172.70.91.58|172.70.91.58]] 10:56, 6 December 2022 (UTC)
:::I'm not sure you understand. I only typed the 14-20 word prompt prefix. The explanations above and below were generated by ChatGPT. [[Special:Contributions/172.71.154.158|172.71.154.158]] 18:15, 6 December 2022 (UTC)

:[Take two, using the prompt prefix, "The following is the wikitext transcript from the latest xkcd comic. Please write an explanation of the comic in wikitext. The title text should be explained in a seperate paragraph at the end:"

::'''ChatGPT:''' In the latest xkcd comic, two characters are discussing an elliptical orbit and the rate at which Earth is approaching the sun. One character, Ponytail, is suspicious when she sees a normal number (65 miles per hour) in their calculations and suggests that scales in astronomy should all be incomprehensible. This is a reference to the fact that astronomical numbers are often very large or very small, and can be difficult for non-astronomers to comprehend.

::Earlier in the comic, Ponytail is at the vet with her cat, and the vet tells her that the cat weighs 12 lbs. Ponytail finds this ridiculous, as nothing weighs 12. She suggests that the cat must weigh 10-20 or 1040 instead. The vet then tells her that the cat weighs 3x10-30 solar masses, which Ponytail finds more acceptable.

::The title text jokes about adopting a cat that weighs 12 solar masses, which would be extremely large. Laser pointers would love chasing it, as it would be an impressive target.

:Meh.]

I propose we create a [https://beta.openai.com/examples/default-summarize bot to summarize the transcript] with the text-davinci-003 API and paste it into the top of discussion whenever the Transcript is expanded more than 10%. Yays and nays? [[Special:Contributions/172.71.154.39|172.71.154.39]] 03:55, 6 December 2022 (UTC)
:'''Yea.''' Both have a few serious but easily noticed and easily correctable flaws, but both are far better than the borderline-trolling six paragraph wall of text for the simple, silly joke we have at the moment. [[Special:Contributions/172.69.33.245|172.69.33.245]] 06:09, 6 December 2022 (UTC)
: I'd like to see it with the past dozen recent transcripts before deciding, and would do it myself if work wasn't busting my butt this afternoon. Someone please go for it. [[Special:Contributions/172.70.214.151|172.70.214.151]] 20:01, 6 December 2022 (UTC)

Why is it as big as 65 mph? Where did the 65 mph figure have come from? A formula? Taking a linear change from minimum velocity (-500 m/s 12 weeks earlier), 4 days before the perihelion gives 86 kph (53 mph), three days gives just 64 kph (40 mph). But those are surely too big, since the rate of change of radial velocity would be slowest around perihelion and aphelion. I wouldn't expect the above-calculated rate of change until weeks out from perihelion. [[Special:Contributions/172.68.210.5|172.68.210.5]] 08:23, 6 December 2022 (UTC)

Surely the really weird thing is an astronomer using non-SI units? [[Special:Contributions/172.70.86.12|172.70.86.12]] 09:40, 6 December 2022 (UTC)

Just changed the "weight" of the Earth to the "mass", in the explanation. Apart from anything else, the weight of the Earth standing on a typical human('s feet?) is ''exactly equal'' to the weight of a typical human standing on the Earth. And things would be screwy, if not. And don't try to 'weigh' the Earth upon the surface of a duplicate Earth, that invokes a number of Health And Safety violations, at minimum, and the results would be questionable. [[Special:Contributions/172.70.91.58|172.70.91.58]] 11:13, 6 December 2022 (UTC)

I interpreted the title text not as the 12-solar-mass star bending the light from laser pointers, but the laser pointers *themselves* "following" the star because they're close enough to it to orbit said star (or at least, on hyperbolic trajectories influenced by the star). [[User:Trimeta|Trimeta]] ([[User talk:Trimeta|talk]]) 16:46, 6 December 2022 (UTC)

Talk:1179: ISO 8601

2022-12-01T22:08:28Z

172.70.214.151: Added comment about IWW cat

Apparently there are some mistakes in the Roman numerals in the comic, the year MMXII is 2012. Also LVII/CCLXV = 57/265, whereas February 27th is the 58th day of the year (which has 365 days). --[[User:Ulm|ulm]] ([[User talk:Ulm|talk]]) 07:55, 27 February 2013 (UTC)
:Just guessing, but could this have something to do with the divergence of various Roman calendars, e.g. Julian vs. Gregorian? [[Special:Contributions/98.122.166.235|98.122.166.235]] 13:55, 27 February 2013 (UTC)
:Another error: Obviously 1330300800 is intended to be Unix time, but it corresponds to 2012-02-27 00:00:00 UTC. --[[User:Ulm|ulm]] ([[User talk:Ulm|talk]]) 08:10, 27 February 2013 (UTC)
:The day part "57" is not wrong: Since Feb 27 is the 58th day of the year, at the beginning of that day, 57 days have gone by since the year started. (At the end of the day, 58 days have gone by) Since we associate days with their beginning (like we do with e.g. hours and minutes), 57 is the correct number (or else Dec 31 would be 2013+365/365 = 2014, and therefore in the wrong year) -- [[User:Xorg|Xorg]] ([[User talk:Xorg|talk]]) 13:53, 27 February 2013 (UTC)
::The day part is ambiguous. It could be as Xorg suggests, the fraction of the year past at the start of the day. On the other hand it could be interpreted as "day 57 or 365," as with pieces in a shipment or page numbers. In the latter case it should be 58/265. But then, that (ambiguity) is the point, isn't it? [[User:Jqavins|Jqavins]] ([[User talk:Jqavins|talk]]) 17:40, 27 February 2013 (UTC)
::Meanwhile the comic was replaced, with CCLXV corrected to CCCLXV. --[[User:Ulm|ulm]] ([[User talk:Ulm|talk]]) Prima vigilia, XVI Kal. Mar. MMDCCLXVI
::I was just about to publish my theory of how "2012" in the Roman numerals in just the same vein might be intended to indeed represent the year we denote "2013", but by counting only the finished years. This would also connect with the confusion over {{w|year zero}}, another thing that ISO 8601 tried to straighten out. (They placed it before year 1.) Everything fit so well. Then there was an edit conflict, following Randalls correction to "2013". I guess you can't always be right. –[[User:St.nerol|St.nerol]] ([[User talk:St.nerol|talk]]) 23:03, 27 February 2013 (UTC)

Can anyone explain 01237 (last interpretation before the cat)? Thanks [[Special:Contributions/68.230.38.154|68.230.38.154]] 08:04, 27 February 2013 (UTC)
:The small numbers above and below the larger ones show which digit is used where. For example, the 2nd and 5th digit is a 0, the 3rd digit is a 1 etc. [[Special:Contributions/82.115.151.1|82.115.151.1]] 08:15, 27 February 2013 (UTC)
:01237 are the digits used in the date, and the numbers above and below them reflect the order in which they are written; 0 is the second and fifth digit, 1 is the third digit, 2 is the first, sixth and seventh digit, 3 is the fourth digit, and 7 is the eighth digit: 20130227 [[User:Bdemirci|Bdemirci]] ([[User talk:Bdemirci|talk]]) 08:15, 27 February 2013 (UTC)

Someone can explain me what means: ((3+3)×(111+1)-1)×3/3-1/33? {{unsigned|95.23.147.48}}
:Read the comic explanation. '''[[User:Davidy22|Davidy²²]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 10:58, 27 February 2013 (UTC)

Many of these format mirror how the dates are spoken in languages. For example, Americans will say "February 27, 2013" and write "2/27/2013", whereas the French will say "27 février 2013" and write "27-02-2013". As a scientist, I was encouraged to write "27 II 2013" (which is apparently standard in Hungary, according to the explanation above) in my lab notebook to avoid ambiguity. --[[User:Prooffreader|Prooffreader]] ([[User talk:Prooffreader|talk]]) 13:16, 28 February 2013 (UTC)

A strange thing is that he forgot the form mostly used in Europe: 27.01.2013. --[[User:DaB.|DaB.]] ([[User talk:DaB.|talk]]) 12:44, 27 February 2013 (UTC)
:: That form is mostly used in Germany. Belgium and France use 27/01/2013 more, Netherlands use 27-01-2013. No idea what the UK prefers although I could imagine 01.27.2013.[[Special:Contributions/62.159.14.62|62.159.14.62]] 12:58, 27 February 2013 (UTC)
::: The UK prefers 27/02/2013 --[[User:H|H]] ([[User talk:H|talk]]) 13:20, 27 February 2013 (UTC)
::: That form (27.02.2013) is also common in all of Scandinavia. --[[User:Buggz|Buggz]] ([[User talk:Buggz|talk]]) 14:15, 27 February 2013 (UTC)
::::It's also widely used in Poland, alongside with 27 II 2013, mentioned above, and also in the comic (though we use space as separator in this format, rather than dot) [[Special:Contributions/162.158.88.206|162.158.88.206]] 23:05, 10 January 2017 (UTC)

The image text has a subtle twist as "12/01/04" offers no contextual clues to it meaning at all, can be read three different ways : "December 1st 2004", "January 12, 2004" or "January 4th, 2012" (as opposed to, for example, "01/15/98" which could only be interrupted as "January 15th, 1998") [[User:JamesCurran|JamesCurran]] ([[User talk:JamesCurran|talk]]) 14:29, 27 February 2013 (UTC)
: Technically speaking, it could also be interpreted as April 1st 2012 or April 12th 2001, though that would be the least likely interpretation. I personally like spelling out 3 letters of the month and using an apostrophe before the year, such as 27 Feb '13. --[[User:Joehammer79|Joehammer79]] ([[User talk:Joehammer79|talk]]) 15:07, 27 February 2013 (UTC)
:: And of course December, 4th 2001 Sebastian --[[Special:Contributions/178.26.118.249|178.26.118.249]] 19:54, 27 February 2013 (UTC)

Is there any way to convert the time-stamp placed on these comments to the YYYY-MM-DD format? --16:17, 27 February 2013 (UTC)
: If you're logged in, you can set your [[Special:Preferences#mw-prefsection-datetime|date and time preferences]]. I doubt it will affect the timestamps on this page, though, since those appear to be saved as plain text. --[[User:Aaron of Mpls|Aaron of Mpls]] ([[User talk:Aaron of Mpls|talk]]) 23:01, 27 February 2013 (UTC)

I feel like the cat thing is a reference to something, but I'm not sure what... is it something? A quick google image search pulls up nothing. --[[User:Jeff|Jeff]] ([[User talk:Jeff|talk]]) 17:26, 27 February 2013 (UTC)
: Seems to me that Randall missed an opportunity: Why a cat? Why not a '''bob'''cat? It still could be some other reference that I'm missing too.
:: Black cats are considered unlucky. I don't see any reference beyond that. [[User:Mattflaschen|Mattflaschen]] ([[User talk:Mattflaschen|talk]]) 17:59, 27 February 2013 (UTC)
::: It's taking the last two digits from 2013 and emphasizing triskaidekaphobia. Doing a web image search on "Cat 13" will pull up similar artwork of hissing black cats combined with the number 13, including both flyers for Friday 13th drink specials at bars, and combat airplane noseart. Apparently combining the unlucky "13" with an unlucky black cat emphasized that they were bad luck for the enemy. [[User:Columbus Admission|Columbus Admission]] ([[User talk:Columbus Admission|talk]]) 19:20, 27 February 2013 (UTC)
:::: "You're a Kitty!" http://www.explainxkcd.com/wiki/index.php?title=231
::::: The cat's "Hissss" could be a reference to timestamp formats in PHP web programming, where the desired date format is generally followed by "H:i:s", the standard 24-hour time format. That would explain the specifically lowercase "i" in the cat's hiss.[[Special:Contributions/208.87.234.180|208.87.234.180]] 13:28, 22 March 2013 (UTC)
:: It might be a reference to Industrial Workers of the World; IWW frequently used a hissing black cat as a symbol, especially in reference to sabotage and so-called "wildcat strikes," and the illustration used resembles the one seen here [https://upload.wikimedia.org/wikipedia/commons/b/b1/Anarchist_black_cat.svg] [[Special:Contributions/172.70.214.151|172.70.214.151]] 22:08, 1 December 2022 (UTC)

Cool, this is my birthday. [[User:Mattflaschen|Mattflaschen]] ([[User talk:Mattflaschen|talk]]) 17:59, 27 February 2013 (UTC)

"However the list then starts listing formats ranging from uncommon to absurd, such as writing the date partly in Roman numerals [...] " -
My math teacher uses a very similar format (in reverse order, d/m/yy, with m being in Roman numerals, because this is Germany (see above)), so I wouldn't call it absurd. She is the only person I know who uses it though. [[Special:Contributions/87.189.150.212|87.189.150.212]] 19:36, 27 February 2013 (UTC)

The image and explanation needs to be updated for the corrections. I could do the explanation part, but I have no idea how to do the image part. And one without the other would be confusing for the readers, so I'll leave that to wiki-magic. [[Special:Contributions/76.106.251.87|76.106.251.87]] 21:09, 27 February 2013 (UTC)

: I updated the image as well as the explanation (and transcript). There is still the error on the Unix timestamp though (will this comic be fixed a third time?...). - [[User:Cos|Cos]] ([[User talk:Cos|talk]]) 21:57, 27 February 2013 (UTC)

Sweden uses the ISO 8601 format. (If only food producers could understand this as well..)
[[Special:Contributions/46.59.16.141|46.59.16.141]] 21:42, 27 February 2013 (UTC)

- What can we learn from this? - I've learned that no matter the system we use today to communicate with others, it's probably seems silly for someone else. It's great to document what we do and propose it as an option to others, but it will be next to impossible to force them to adopt. When someone will develop a time reference that makes sense to everyone, it will be adopted all over the world without much effort. - e-inspired [[Special:Contributions/24.51.197.187|24.51.197.187]] 19:07, 27 February 2013 (UTC)

Perhaps the cat (because of the vagueness of the system) was referring to not the 27th of February 2013. but instead referring to the 13th of February in 1327 which would make it Friday the 13th. {{unsigned|66.35.1.98}}

Just so you know, Explainxkcd wiki uses the ISO certified date standard for its "All Comics" page. '''[[User:Davidy22|Davidy²²]]'''[[User talk:Davidy22|<tt>[talk]</tt>]] 01:57, 28 February 2013 (UTC)

Personally I've always preferred to use Year-Month-Day my personal stuff. I like it because the format is written the way we write any other number: Most significant to left, least significant to right. I didn't know this was a standardized method and I've always wondered why it wasn't used. Nice to know it is![[Special:Contributions/172.191.224.64|172.191.224.64]] 04:09, 28 February 2013 (UTC)ExternalMonologue

Personally, I like yyyy-mm-dd because it sorts correctly. I really hate running into a list of dates sorted by month name, or worse, day of the week. I suspect this was part of why ISO chose this format. I've never been able to remember the american vs european ordering... My only other options is: February 27, 2013. [[User:Divad27182|Divad27182]] ([[User talk:Divad27182|talk]]) 12:11, 28 February 2013 (UTC)

: I'm not sure what standard the Canadian Military officially uses, but as soldiers we were all taught to use a "7 Feb 2013" format when writing dates. Seems the most clear and concise to me. {{unsigned|24.85.225.143}}

:: Most of the dates I've seen used by the Canadian Military have been of that format but have only used 2-digit years - e.g. 27 Feb 13 (they didn't learn from Y2K!) {{unsigned|64.140.113.219}}

- What can we learn from this? - I've learned that keeping our time relative to earth rotation is outdated, we keep having to add seconds here and there just to keep time. And as an engineer don't get me started on complexity of mktime function. I personally think of time as oscillation of a flawed crystal in my circuits that I constantly need to keep accounting for through endless calibrations, and keep wishing that better time references would be cheaper (to me good is never good enough) - [[User:E-inspired|E-inspired]] ([[User talk:E-inspired|talk]]) 15:05, 28 February 2013 (UTC)

Ha ha E-inspired you should read the "falsehoods programmers believe about times" http://infiniteundo.com/post/25326999628/falsehoods-programmers-believe-about-time http://infiniteundo.com/post/25509354022/more-falsehoods-programmers-believe-about-time-wisdom [[Special:Contributions/75.103.23.206|75.103.23.206]] 20:14, 28 February 2013 (UTC)

:Dude, you've just made my DAY! I forgot the last time I've laughed as hard. Why didn't I know about this site before? - [[User:E-inspired|E-inspired]] ([[User talk:E-inspired|talk]]) 20:43, 28 February 2013 (UTC)

Why is the date of this comic written as "February 27, 2013" and not "2013-02-27"? [[Special:Contributions/93.73.186.104|93.73.186.104]] 08:46, 14 March 2013 (UTC)

The hover hint says "ISO 8601 was published on 06/05/88 and most recently amended on 12/01/04." which must be a joke - because it is impossible to know whether these days are 6 May 1988 and 12 January 2004 or 5 June 1988 and 1 December 2004. Why make a comic about ISO 8601 then use ambiguous dates in the hint? {{unsigned ip|141.101.98.95}}
:I had always assumed that the title text was poking fun at ISO for not complying with their own standard. Looking at the ISO website today, I'm disappointed to find that this is, in fact, not the case. Perhaps three years ago it was. [[User:Zeusfaber|Zeusfaber]] ([[User talk:Zeusfaber|talk]]) 17:07, 9 July 2016 (UTC)

Amateurs, you don't put periods in format with roman month number. So it's 27 II 2012 [[Special:Contributions/141.101.89.209|141.101.89.209]] 12:48, 20 April 2015 (UTC)

The chief advantage of the American system is that placing the year last makes it easy to simply drop the year in casual conversation, given how slowly years change. While it might technically follow just as logically to have the day precede the month, in practice the sequence means less for the first two numbers. The 31 days or fewer between month changes are relatively frequent, while the 365.25 days between year changes can easily go "out of sight, out of mind" except when approaching a transition. In either case, placing the nigh-irrelevant year number first in the text string causes the reader to pay attention to that number first, and have to "skip ahead" to discover the month and day, when in truth the day is the most salient datapoint. [[Special:Contributions/173.245.54.52|173.245.54.52]] 20:58, 29 October 2015 (UTC)
: Hmm... The comic's point is about '''writing''' dates as '''numbers'''... [[Special:Contributions/162.158.180.215|162.158.180.215]] 09:47, 13 November 2015 (UTC)
: Don't write "America" when you mean "USA". In most of America (and most of the rest of the world) the traditional order is D/M/Y, which makes it even simpler to drop more significant parts in casual conversation. E.g. "it's the 27th of February 2013" becomes "it's the 27th of February" when the year is known and just "it's the 27th" when also the month is known. In my country we traditionally had D/M/Y but we are approaching ISO inch by inch. Personally I've used ISO and four digit year since around 1997. https://en.wikipedia.org/wiki/Date_format_by_country /David A [[Special:Contributions/141.101.80.33|141.101.80.33]] 22:01, 23 September 2016 (UTC)

Source for the claim about the Swedish date format. I have never seen it, we have been using the ISO-format since before it was defined (I started school 1980 and learned to write dates in the first year or two), not even in old books, movies or similar.

Re: [https://www.explainxkcd.com/wiki/index.php?title=1179:_ISO_8601&oldid=223421 undoing to a 'working' version] of the penultimate format... Undid version isn't perfect (superscripts and subscripts still prior/next characters from nominally-scripted main digits, rather than above and below), but this one doesn't work at all here. Looks like (describing, in leiu of reliable rendering)... Zero, One, Two-with-small-two-as-cap Three Seven (lower-script Three One Four, in-line) Five Six Seven Eight. ...essentially, just one off-size number is conceivably placed where it might be, and even that isn't on the right 'parent' character.

This clearly is not rendering properly, but not sure how without extensive fiddling that'll ''probably'' break things on the browser that currently thinks this reversion renders correctly. Perhaps yet ''another'' method of text-mangling is needed in this case? [[Special:Contributions/141.101.99.32|141.101.99.32]]

Talk:2697: Y2K and 2038

2022-11-11T21:03:40Z

172.70.214.151: India essay

Y2K issues solved back in 1996. Even wrote a letter to the Board of Trustees.
2038 Problems are not-my-concern. Retired 9/30/2022.[[Special:Contributions/172.70.110.236|172.70.110.236]]
:Many of the people who helped solve the Y2K problem were pulled out of retirement. Lots of the issues were in old COBOL software, and there weren't enough active programmers who were competent in COBOL. So keep your resume ready. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 20:07, 11 November 2022 (UTC)

this is so weird I just finished a research assignment on the Y2038 problem [[Special:Contributions/172.71.166.223|172.71.166.223]] 18:27, 11 November 2022 (UTC)

Somewhere there is an essay about the unexpected synergy between the Y2K bug and the burgeoning open source movement, which may or may not be useful for the explanation. [[Special:Contributions/172.70.214.243|172.70.214.243]] 20:18, 11 November 2022 (UTC)
:https://www.livehistoryindia.com/story/eras/india-software-revolution-rooted-in-y2k is a fascinating essay too. [[Special:Contributions/172.70.214.151|172.70.214.151]] 21:03, 11 November 2022 (UTC)

2691: Encryption

2022-10-29T02:35:37Z

172.70.214.151: /* Explanation */ another

{{comic
| number = 2691
| date = October 28, 2022
| title = Encryption
| image = encryption_2x.png
| imagesize = 235x380px
| noexpand = true
| titletext = WARNING: PEOPLE NAMED EVE ARE PROHIBITED FROM INSTALLING THIS APP!
}}

==Explanation==
{{incomplete|Created by ALICE AND BOB - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

When teaching encryption / cryptography, it is common to use a story about sending messages between people named {{w|Alice and Bob}}. Cueball claims to have created a texting app that only allows for this one thing. It is unclear how it enforces this restriction. The title text mentions "Eve, who represents an "eavesdropper", someone who attempts to intercept the messages between Alice and Bob.

[[177: Alice and Bob]] and [[1323: Protocol]] are also about Alice and Bob.

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}
:[Cueball showing a phone to Megan]
:Cueball: The app will let you send messages to your friend Robert, or my brother.
:Alice: Can they reply?
:Cueball: No.

:[Caption below the panel]:
:My new secure texting app only allows people named Alice to send messages to people named Bob.

{{comic discussion}}
[[Category: Comics featuring Cueball]]
[[Category: Cryptography]]
[[Category: Smartphones]]

Talk:2688: Bubble Universes

2022-10-22T04:05:30Z

172.70.214.151: Hills are not doppelganger. Also, Biden sucks hairy sweatty monkey balls.

Is this a reference to the money kind of inflation? [[Special:Contributions/172.70.131.6|172.70.131.6]] 16:03, 21 October 2022 (UTC)

: no [[Special:Contributions/172.70.114.205|172.70.114.205]] 16:29, 21 October 2022 (UTC)
: I do think it a form of irony that when I hear "inflation" I do *NOT* think about bubbles or balloons. 20:08, 21 October 2022 (UTC)

*pop* [[User:JLZ0kTC5|JLZ0kTC5]] ([[User talk:JLZ0kTC5|talk]]) 16:13, 21 October 2022 (UTC)

I think this comic might be referencing the [[wikipedia:Eternal inflation|eternal inflation]] model: as the universe eternally inflates at an exponential rate, bubbles form where the inflation slows down, creating a disjoint multiverse from these bubbles being unable to interact with each other. In this comic, the process is shown as recursive. [[User:LegionMammal978|LegionMammal978]] ([[User talk:LegionMammal978|talk]]) 16:42, 21 October 2022 (UTC)

:: I'm included to agree. Should the article be changed? 20:08, 21 October 2022 (UTC)

This comic would be perfect motive for a mug. [[User:Fabian42|Fabian42]] ([[User talk:Fabian42|talk]]) 19:04, 21 October 2022 (UTC)
:Though I think you mean "motif", although I also agree in principle with your word as well, if it does motivate someone to create one... ;) [[Special:Contributions/172.70.162.77|172.70.162.77]] 20:33, 21 October 2022 (UTC)

I don't think this comic references the big bounce, but rather the theory of nested universes. The way it works is each black hole spawns a new universe, and is connected to a white hold in the new universe. If true, our universe came from another universe capable of producing black holes, and since our universe has black holes in it, according to the theory it has in turn created additional universes, each with the potential capability to produce its own black holes and therefore create additional universes. It's kind of like universe propagation.

[Responding to the title text:] '''As a cosmologist, it most certainly does not! Cosmic inflation took less than 10^-32 seconds involving superluminal expansion of points starting the width of a quark from each other. Any physical gas inflating of a membrane is simply not comparable, and if this is a joke about [https://twitter.com/RepKatiePorter/status/1582475617723113472] then it's not funny. I would die on this hill if I had time to argue with you all about this.''' [[Special:Contributions/172.70.211.146|172.70.211.146]] 21:52, 21 October 2022 (UTC)

Not sure "The Big Bounce" has currency here, as per the current explanation. That's a cyclic theory (generally relying upon a Big Crunch ending one version of universe, the result sparking the next Big Bang... certainly in the version I would favour, if it turned out we were actually not destined towards untempered expansion and either Heat Death or Big Rip as the unending finale) not a recursively embedding one (e.g. Inception-like realities within realities). But that's just my opinion. Someone who actually finds a Big Bounce model of spacetime more satisfying than any open-ended one, even. [[Special:Contributions/172.69.79.201|172.69.79.201]] 22:04, 21 October 2022 (UTC)
:There are a number of cyclic cosmologies possibly involving a "big crunch" such as ekpyrotic theories, but we need telescopes much more powerful than the JWST to say anything about whether they are possible, likely, or propose improvements to them. If the pre-inflationary universe was actually a point, we may never know. There is a large variety of other open questions which are much easier to answer. [[Special:Contributions/172.69.134.131|172.69.134.131]] 00:21, 22 October 2022 (UTC)

This makes me think of his earlier comics. [[User:N-eh|N-eh]] ([[User talk:N-eh|talk]]) 00:15, 22 October 2022 (UTC)

I just realized the two cueballs are not on doppelganger hills. Perhaps an allusion to, as opposed to their being multiple nested universes, one metauniverse in which our bubble universe (with cueball) actually exists blowing regular, non-universe producing bubbles? [[Special:Contributions/172.70.214.151|172.70.214.151]]