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		<title>explain xkcd - User contributions [en]</title>
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		<updated>2026-06-24T20:55:21Z</updated>
		<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1716:_Time_Travel_Thesis&amp;diff=124908</id>
		<title>1716: Time Travel Thesis</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1716:_Time_Travel_Thesis&amp;diff=124908"/>
				<updated>2016-08-08T13:05:34Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.75.245: Plural, dammit&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1716&lt;br /&gt;
| date      = August 5, 2016&lt;br /&gt;
| title     = Time Travel Thesis&lt;br /&gt;
| image     = time_travel_thesis.png&lt;br /&gt;
| titletext = 'Hey, what are those futuristic goggles for, anyway?' 'Oh, this is just a broken Google Glass. It was 2010's night at the club.'&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
&lt;br /&gt;
{{incomplete | Explanation can be scaled back to mention that closed loop and time paradoxes are not real since time travelers can predict outcome of conversation that may never take place}}&lt;br /&gt;
&lt;br /&gt;
[[Cueball]] has apparently been reading about {{w|time travel}}. He tells [[Megan]] about this, and Megan excitedly remarks that she did her college thesis on time travel which basically means that she is supposed to know a lot more about time travel than a guy who has just been &amp;quot;reading&amp;quot; about it.&lt;br /&gt;
&lt;br /&gt;
Cueball, however, continues to ask her if she knows basic facts about time travel, like he is investigating if he has discovered facets about it that she would have overlooked while writing a thesis about it. Megan keeps trying to say that since she wrote a '''Time Travel Thesis''', (hence the title of the comic), she already knows all of this and much, much more, and she is obviously getting frustrated by Cueball's attempts to impress her with his &amp;quot;knowledge&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
At this point Megan's future-self arrives with a ''Bzzzzt'', having used time travel to arrive at this exact moment in time. It seem she has continued her research and has successfully managed to make a time machine (maybe in a collaboration with others, but with the ability to use it to her own end and needs.) &lt;br /&gt;
&lt;br /&gt;
The reason she arrives is only to tell her younger self that this conversation with Cueball doesn't go anywhere and isn't important, and so present-Megan can leave and not waste her time anymore. Up till then, Megan was presumably reluctant to break off a conversation on the topic of time travel, since the conversation could potentially have improved, or maybe she was even at first attracted to Cueball and interested because he at least had read about time travel. But once the conversation began to run off track, it came as a relief to know that she could quit without the risk of missing out on anything important. Also, since Megan took the effort to time travel back to this exact moment, that must mean the conversation was so boring and uneventful she kept regretting having this conversation even far into the future to the point where she remembers it as one of the moments that need to be changed with her acquired time travel abilities.&lt;br /&gt;
&lt;br /&gt;
And then she just walks away with her future-self leaving Cueball hanging in the last panel, having invented a completely new way to get out of useless/boring conversations.&lt;br /&gt;
&lt;br /&gt;
Alternatively, future-Megan just makes an excuse to haul present-Megan off in order to prevent the latter from disclosing some details of time travel science to Cueball, which could have unintended consequences. However, using very advanced technology, or even violating physics law, for ''very mundane'' ends is very common in xkcd, so using time travel to prevent useless conversation is not surprising from Megan.&lt;br /&gt;
&lt;br /&gt;
In either case if future-Megan did not finish the conversation she would not know it was unimportant, thus indicating that she actually did. So by coming back she now changes her own (and Cueball's) future. But maybe she knows this will not change anything, just save her self from wasting time. Of course the general implications of being able to travel like this are enormous, and the {{w|Grandfather paradox|paradoxes arising}} from such a possibility endless. For instance the future Megan could now describe to the present Megan how to make the time machine. But why not have gone even further back making it possible to travel in time even earlier etc. (And of course the whole going back and killing one of parents before they even meet, like the idea in {{w|The Terminator}} movie). Generally time travel is a [[:Category:Time travel|recurring theme]] in xkcd. It is worth noting, however, that the comic does not inherently cause a paradox. Were Megan to actually finish the conversation originally and then travel back in time to interrupt it, so long as the Megan who ''didn't'' finish the conversation stills travels back in time with the ''knowledge'' that the conversation didn't actually go anywhere and still saves her younger self from wasting her time, a time loop can be logically sustained.&lt;br /&gt;
&lt;br /&gt;
It is possible that [[Randall]] may have had some conversations like this, where after having spend a lot of time getting nothing out of it himself, would have wished his future self had come back to tell him to just leave the conversation now.&lt;br /&gt;
&lt;br /&gt;
In the title text present-Megan asks future-Megan about her futuristic googles and what they are for, presumably assuming they are needed for the time travel (maybe it is the backpack?) However it turns out it's just some old and broken {{w|Google Glass}}. The only reason future Megan wears these is that she attended a party at the club that had a 2010's night theme. Google Glass has been mocked twice before, first in [[1251: Anti-Glass]], and the reason they may be broken can be found in the second instance [[1304: Glass Trolling]].&lt;br /&gt;
&lt;br /&gt;
This is an indication of how far from the future she has traveled, as Google Glass was first released in the 2010s. It is not clear whether she is wearing Google Glass because it became popular in the 2010s or because it was an esoteric piece of hardware that people would readily associate with the 2010s. Also a 90s party may be thrown today, but not a 2000s party. So it is safe to assume that Megan is at least from the 2030s. Also people attending retro dress-up parties frequently make mistakes and do not dress up exactly in-style, creating some anachronisms, especially if they dress up like they did many years ago.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is facing Megan, talking to her.]&lt;br /&gt;
:Cueball: I've been reading about time travel.&lt;br /&gt;
:Megan: Cool! I did my thesis on time travel!&lt;br /&gt;
&lt;br /&gt;
:[Cueball is now gesturing toward Megan. An electrical charge of some sort is shown occurring outside the panel in the bottom right corner behind Megan.]&lt;br /&gt;
:Cueball: Nice! So you know about closed timelike curves?&lt;br /&gt;
:Megan: Yup. Thesis.&lt;br /&gt;
:Cueball: Apparently wormholes can use exotic matter to–&lt;br /&gt;
:Megan: I know. Like I said–&lt;br /&gt;
:Charge: &amp;lt;big&amp;gt;''Bzzzt!''&amp;lt;/big&amp;gt;&lt;br /&gt;
&lt;br /&gt;
:[Megan has turned away from Cueball to the right. Megan from the future, wearing sunglasses, a headset and a machine strapped to her back has entered the frame from the right where the charge appeared.]&lt;br /&gt;
:Future-Megan: You can skip this conversation. It doesn't turn out to be important.&lt;br /&gt;
:Megan: Oh, thank God.&lt;br /&gt;
&lt;br /&gt;
:[Cueball is standing alone, the two Megans have left the panel.]&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Time travel]]&lt;/div&gt;</summary>
		<author><name>141.101.75.245</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=816:_Applied_Math&amp;diff=124755</id>
		<title>816: Applied Math</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=816:_Applied_Math&amp;diff=124755"/>
				<updated>2016-08-05T12:36:54Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.75.245: Undo revision 105287 by 162.158.60.5 (talk)&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number = 816&lt;br /&gt;
| date = November 8, 2010&lt;br /&gt;
| title = Applied Math&lt;br /&gt;
| image = applied_math.png&lt;br /&gt;
| titletext = Dear Reader: Enclosed is a check for ninety-eight cents. Using your work, I have proven that this equals the amount you requested.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{w|Donald Knuth}} is a {{w|computer scientist}} who has written several computer science textbooks and he offers {{w|Knuth reward check|monetary rewards}} for anyone finding errors in his publications. The first error found in each book is worth US$2.56. Other suggestions are worth less than $2.56, but a check is still sent out if Dr. Knuth finds them to be reasonable.&lt;br /&gt;
&lt;br /&gt;
[[Megan]] uses a proof to invalidate logic itself. According to the logic symbols [[File:contradiction.png]] at the bottom of the proof, she has proved that &amp;quot;the proposition (statement) is true and the proposition is false,&amp;quot; i.e. &amp;quot;something is both true and false.&amp;quot; (Specifically, ∴ means &amp;quot;therefore&amp;quot;, ''P'' represents that a proposition is true, ∧ stands for &amp;quot;and&amp;quot;, and an overbar negates a proposition (so ''&amp;lt;span style=&amp;quot;text-decoration: overline&amp;quot;&amp;gt;P&amp;lt;/span&amp;gt;'' represents that a proposition is false)). If someone were to prove this, it would indeed derail the very foundation of logic and result in the {{w|principle of explosion}}, which is referenced in [[704: Principle of Explosion|a previous comic]].&lt;br /&gt;
&lt;br /&gt;
Since most of the content of computer science textbooks is fundamentally based on logic, Megan's proof obviously spells doom for Dr. Knuth's, as each instance of logic can now be considered an error. After Megan's friend confirms the validity of her proof, Megan writes a letter to Dr. Knuth to collect her money for the 1,317,408 errors in {{w|The Art of Computer Programming}} at $2.56 each. According to the amount Megan demands as a reward, she apparently considers this textbook to have an average of more than 400 instances of logic per page (if she has the latest edition of each volume).&lt;br /&gt;
&lt;br /&gt;
The title text is the reply from Dr. Knuth, in which he uses Megan's logic-disproving proof against her by claiming — with no logical explanation — that the amount of money she is in fact due as a reward is only 98 cents. In logic, from a contradiction (such as &amp;quot;P∧&amp;lt;span style=&amp;quot;text-decoration: overline&amp;quot;&amp;gt;P&amp;lt;/span&amp;gt;&amp;quot;) can be inferred any statement, including that $3,372,564.48 = $0.98. He does this presumably to a) get out of paying her over three million dollars, b) demonstrate his contempt for or disbelief in her proof, and/or c) to show her, rather passive-aggressively, that she herself is not exempt from any ill effects resulting from her proof.  If logic is proved to be false, then all mathematics are proved false and 3,372,564.48 = 0.98.&lt;br /&gt;
&lt;br /&gt;
The title of the comic, &amp;quot;Applied Math,&amp;quot; is a play on {{w|Applied mathematics}}, &amp;quot;mathematical methods that are typically used in science, engineering, business, and industry,&amp;quot; as opposed to {{w|pure math}}, which focuses exclusively on abstract concepts. Instead of using math to calculate something like the speed of a falling object, Megan uses it for an ostensibly more frivolous reason: to gain a huge reward via a proof of dubious validity.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Ponytail is standing at a whiteboard considering a logical proof. The proof assumes ''P'' and deduces ''P'' ∧ ''&amp;lt;span style=&amp;quot;text-decoration: overline&amp;quot;&amp;gt;P&amp;lt;/span&amp;gt;''.]&lt;br /&gt;
:Ponytail: Wow. I can't find fault with your proof.&lt;br /&gt;
&lt;br /&gt;
:[Ponytail is still looking at the white board, the frame expands to show Megan walking away, rubbing her hands together in an evil manner.]&lt;br /&gt;
:Ponytail: You've show the inconsistency — and thus the invalidity — of basic logic itself.&lt;br /&gt;
:Megan: Excellent. On to step two...&lt;br /&gt;
&lt;br /&gt;
:[Megan sits down at a desk and begins to write.]&lt;br /&gt;
:Dear Dr. Knuth,&lt;br /&gt;
&lt;br /&gt;
:[She continues to write.]&lt;br /&gt;
:I am writing to collect from you the $3,372,564.48 I am owed for discovering 1,317,408 errors in ''The Art of Computer Programming...''&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring Donald Knuth]]&lt;br /&gt;
[[Category:Logic]]&lt;/div&gt;</summary>
		<author><name>141.101.75.245</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1679:_Substitutions_3&amp;diff=119922</id>
		<title>Talk:1679: Substitutions 3</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1679:_Substitutions_3&amp;diff=119922"/>
				<updated>2016-05-11T18:59:07Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.75.245: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
&lt;br /&gt;
The title text may be a reference to the Mayan city discovered by a 15 year old, but that city hasn't yet been visited by Channing Tatum and his friends or Mr Tatum. https://translate.google.com/translate?tl=en&amp;amp;u=http%3A%2F%2Fwww.journaldemontreal.com%2F2016%2F05%2F07%2Fun-ado-decouvre-une-cite-maya [[Special:Contributions/198.41.239.34|198.41.239.34]] 13:32, 11 May 2016 (UTC)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Here's the code for the full set of substitutions from all three comics, to be inserted in the Chrome extension the page listed, which can be found here: https://chrome.google.com/webstore/detail/replacerator/gaajhenbcclienfnniphiiambbbninnp?hl=en&lt;br /&gt;
&lt;br /&gt;
&amp;lt;div style=&amp;quot;font-size: 25%;&amp;quot;&amp;gt;{&amp;quot;virtual boy&amp;quot;:&amp;quot;virtual boy&amp;quot;,&amp;quot;like hundreds&amp;quot;:&amp;quot;like hundreds&amp;quot;,&amp;quot;kinda probably&amp;quot;:&amp;quot;kinda probably&amp;quot;,&amp;quot;haunted&amp;quot;:&amp;quot;haunted&amp;quot;,&amp;quot;very large&amp;quot;:&amp;quot;very large&amp;quot;,&amp;quot;beyond the grave&amp;quot;:&amp;quot;beyond the grave&amp;quot;,&amp;quot;airbender&amp;quot;:&amp;quot;airbender&amp;quot;,&amp;quot;cat&amp;quot;:&amp;quot;cat&amp;quot;,&amp;quot;delusional&amp;quot;:&amp;quot;delusional&amp;quot;,&amp;quot;river spirits&amp;quot;:&amp;quot;river spirits&amp;quot;,&amp;quot;is guilty and everyone knows it&amp;quot;:&amp;quot;is guilty and everyone knows it&amp;quot;,&amp;quot;dance-off&amp;quot;:&amp;quot;dance-off&amp;quot;,&amp;quot;destroy&amp;quot;:&amp;quot;destroy&amp;quot;,&amp;quot;the big bang theory&amp;quot;:&amp;quot;the big bang theory&amp;quot;,&amp;quot;dog&amp;quot;:&amp;quot;dog&amp;quot;,&amp;quot;eating contest&amp;quot;:&amp;quot;eating contest&amp;quot;,&amp;quot;atomic&amp;quot;:&amp;quot;atomic&amp;quot;,&amp;quot;poem&amp;quot;:&amp;quot;poem&amp;quot;,&amp;quot;physically physically expands&amp;quot;:&amp;quot;physically physically physically expands&amp;quot;,&amp;quot;this guy&amp;quot;:&amp;quot;this guy&amp;quot;,&amp;quot;poem&amp;quot;:&amp;quot;poem&amp;quot;,&amp;quot;friggin' awful&amp;quot;:&amp;quot;friggin' awful&amp;quot;,&amp;quot;blade runner&amp;quot;:&amp;quot;blade runner&amp;quot;,&amp;quot;magic spell&amp;quot;:&amp;quot;magic spell&amp;quot;,&amp;quot;spherical&amp;quot;:&amp;quot;spherical&amp;quot;,&amp;quot;homestar runner&amp;quot;:&amp;quot;homestar runner&amp;quot;,&amp;quot;tons of horsemeat&amp;quot;:&amp;quot;tons of horsemeat&amp;quot;,&amp;quot;final&amp;quot;:&amp;quot;final&amp;quot;,&amp;quot;ménage à trois&amp;quot;:&amp;quot;ménage à trois&amp;quot;,&amp;quot;minutes&amp;quot;:&amp;quot;minutes&amp;quot;,&amp;quot;Tumblr post&amp;quot;:&amp;quot;Tumblr post&amp;quot;,&amp;quot;lots of signs&amp;quot;:&amp;quot;lots of signs&amp;quot;,&amp;quot;psychic reading&amp;quot;:&amp;quot;psychic reading&amp;quot;,&amp;quot;avenge&amp;quot;:&amp;quot;avenge&amp;quot;,&amp;quot;will never be known&amp;quot;:&amp;quot;will never be known&amp;quot;,&amp;quot;Channing Tatum and his friends&amp;quot;:&amp;quot;Channing Tatum and his friends&amp;quot;,&amp;quot;friggin' awful&amp;quot;:&amp;quot;friggin' awful&amp;quot;,&amp;quot;uncontrollably swerving&amp;quot;:&amp;quot;uncontrollably swerving&amp;quot;,&amp;quot;elf-lord&amp;quot;:&amp;quot;elf-lord&amp;quot;,&amp;quot;way to kill werewolves&amp;quot;:&amp;quot;way to kill werewolves&amp;quot;,&amp;quot;Pokédex&amp;quot;:&amp;quot;Pokédex&amp;quot;,&amp;quot;spaaace&amp;quot;:&amp;quot;spaaace&amp;quot;,&amp;quot;blood-soaked&amp;quot;:&amp;quot;blood-soaked&amp;quot;,&amp;quot;tunnels I found&amp;quot;:&amp;quot;tunnels I found&amp;quot;,&amp;quot;suddenly&amp;quot;:&amp;quot;suddenly&amp;quot;,&amp;quot;surprising (but not to me) (but not to me)&amp;quot;:&amp;quot;surprising (but not to me) (but not to me) (but not to me)&amp;quot;,&amp;quot;sexual sexual tension&amp;quot;:&amp;quot;sexual sexual sexual tension&amp;quot;,&amp;quot;frigging' awful&amp;quot;:&amp;quot;frigging' awful&amp;quot;,&amp;quot;poem&amp;quot;:&amp;quot;poem&amp;quot;,&amp;quot;drunkenly egged on&amp;quot;:&amp;quot;drunkenly egged on&amp;quot;,&amp;quot;probably won't&amp;quot;:&amp;quot;probably won't&amp;quot;,&amp;quot;interplanetary war&amp;quot;:&amp;quot;interplanetary war&amp;quot;,&amp;quot;find pokémon&amp;quot;:&amp;quot;find pokémon&amp;quot;,&amp;quot;these dudes I know&amp;quot;:&amp;quot;these dudes I know&amp;quot;,&amp;quot;minutes&amp;quot;:&amp;quot;minutes&amp;quot;,&amp;quot;I'm really sad about&amp;quot;:&amp;quot;I'm really sad about&amp;quot;}&amp;lt;/div&amp;gt;&lt;br /&gt;
&lt;br /&gt;
::Is there a way to easily enable/disable the extension?[[User:Bmmarti3|Bmmarti3]] ([[User talk:Bmmarti3|talk]])&lt;br /&gt;
:::It appears there isn't... Go to your list of browser extensions, and enable/disable it.[[Special:Contributions/141.101.75.245|141.101.75.245]] 18:59, 11 May 2016 (UTC)&lt;br /&gt;
&lt;br /&gt;
I would put it somewhere more convenient if I knew a site for it. [[Special:Contributions/141.101.104.158|141.101.104.158]] 13:46, 11 May 2016 (UTC)&lt;br /&gt;
:This reminds me an awful lot of the title text in the previous comic [[1678: Recent Searches]] regarding autoexec code posted by verified twitter users. :-p [[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 13:48, 11 May 2016 (UTC)&lt;br /&gt;
&lt;br /&gt;
It would be wonderful if the celebrity injunction was about a ménage à trois and somehow all the hype was Randall's fault. [[Special:Contributions/141.101.70.133|141.101.70.133]] 15:13, 11 May 2016 (UTC)&lt;br /&gt;
Great. Now I have to update this:https://chrome.google.com/webstore/detail/xkcd-substitutions/jkgogmboalmaijfgfhfepckdgjeopfhk?hl=en&amp;amp;gl=001 --[[Special:Contributions/108.162.215.69|108.162.215.69]] 18:24, 11 May 2016 (UTC)&lt;/div&gt;</summary>
		<author><name>141.101.75.245</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1678:_Recent_Searches&amp;diff=119635</id>
		<title>1678: Recent Searches</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1678:_Recent_Searches&amp;diff=119635"/>
				<updated>2016-05-09T19:35:56Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.75.245: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1678&lt;br /&gt;
| date      = May 9, 2016&lt;br /&gt;
| title     = Recent Searches&lt;br /&gt;
| image     = recent_searches.png&lt;br /&gt;
| titletext = autoexec code posted by verified twitter users&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|What is a bootloader?}}&lt;br /&gt;
The comic refers to the practice of finding answers to computer problems using {{w|Google}}. It shows a list of search queries, each of which suggests the author is perversely misusuing or overextending some computer technology or technologies. The overall impression is of someone technically sophisticated enough to shoot themselves in the foot, and who does not learn any larger lessons despite doing so repeatedly. It is unlikely any of the searches would give useful answers, because no two people would be perverse in these extremely specific ways. The title text is another possible entry in this list. A complication in attempting to solve computer problems this way would be presented by Google's search term autocorrection, which for several years has replaced technical terms with unrelated language from recent popular culture.&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot; border=&amp;quot;1&amp;quot; cellpadding=&amp;quot;4&amp;quot; style=&amp;quot;border-collapse: collapse;&amp;quot;&lt;br /&gt;
|-&lt;br /&gt;
! width=20% | Search&lt;br /&gt;
! Explanation&lt;br /&gt;
|-&lt;br /&gt;
| Google translate syntax highlighting&lt;br /&gt;
| {{w|Syntax highlighting}} can be used when editing source code to make the code more readable and easier to understand. {{w|Google Translate}} is used to translate text from one {{w|natural language}} to another. The joke here is that syntax highlighting doesn't make sense in the context of translating natural languages.&lt;br /&gt;
&lt;br /&gt;
Alternatively, this could imply that the user is attempting to translate code from one programming language to another using Google translate.&lt;br /&gt;
|-&lt;br /&gt;
| Autodetect mixed bash zsh&lt;br /&gt;
| {{w|bash}} and {{w|Z_shell|zsh}} are two {{w|Command-line_interface|command line interfaces}} for {{w|Linux}}. The way to execute commands is almost identical, making detecting a script that contains a mixed syntax nearly impossible.&lt;br /&gt;
|-&lt;br /&gt;
| CPU temperature sensor limits&lt;br /&gt;
| The CPU's temperature sensors exist to tell you when your CPU is becoming dangerously overheated (normally because of a faulty fan or overclocking). Someone who searches for information about the limits of those sensors is presumably expecting to misuse their CPU.&lt;br /&gt;
|-&lt;br /&gt;
| GIF to XLS&lt;br /&gt;
| .GIF (Graphic Interchange Format) is a file extension used to store images and sequences of images to be displayed as an animation. .XLS is the file extension for Microsoft Excel spreadsheets. The joke is that the complete difference between the two types of file makes any kind of conversion all but impossible, so the search is useless. (Although, in fact, this search turns up a number of results along the lines of OCR programs that can convert a table in a GIF image to spreadsheet format.)&lt;br /&gt;
|-&lt;br /&gt;
| Clock speed jumper sample rate&lt;br /&gt;
|  Jumper wire is a short circuit used for switching a certain function on an electronic circuit. On a motherboard, jumpers can be used to alter the clock speeds of various motherboard functions (such as the CPU or the front side bus). These jumpers should be modified when the computer is off. However, this search is asking how often the motherboard checks the status of the clock speed jumpers, implying that they intend to change these jumpers while the computer is powered on.&lt;br /&gt;
|-&lt;br /&gt;
| [https://www.google.com/search?q=clean+reinstall+keybinding Clean reinstall keybinding]&lt;br /&gt;
| This refers to keybinding, the practice of mapping a certain key to a certain function (e.g., pressing PRTSC will take a screenshot). Creating a keybinding for a task usually implies that the task is repeated often. A &amp;quot;clean reinstall&amp;quot; (presumably of an operating system) is however not generally something that should be repeated often, implying that the user is regularly breaking the OS with their tinkering.&lt;br /&gt;
|-&lt;br /&gt;
| Cron job to update crontab&lt;br /&gt;
| {{w|Cron}} is a utility that allows you to schedule commands or scripts to be run periodically. These scheduled jobs are read from a ''crontab'' file. A job that updates the crontab (therefore creating new jobs, removing old ones or editing existing ones) is highly unusual and unlikely to be what you actually want to do.&lt;br /&gt;
|-&lt;br /&gt;
| [https://www.google.com/search?q=fsck+chrome+extension fsck Chrome extension]&lt;br /&gt;
| &lt;br /&gt;
This is probably a search for an interface to the Unix '''f'''ile'''s'''ystem che'''ck'''er {{w|fsck}} via third-party software added to Chrome.  Repairing a filesystem this way would be inadvisable. {{Citation needed}} This might indicate confusion about the meaning of the term &amp;quot;online filesystem repair&amp;quot;, in which &amp;quot;online&amp;quot; means &amp;quot;while the filesystem is in use&amp;quot; rather than &amp;quot;over the internet&amp;quot;. Alternatively, the user might want to repair an installation of the operating system Chromium, in a manner less drastic than the {{w|factory reset}} preferred by Google.&lt;br /&gt;
|-&lt;br /&gt;
| Recursive font&lt;br /&gt;
| An idiosyncratic mix of {{w|Recursion}} and the font style ''{{w|cursive}}'', referring especially to text handwritten in a flowing manner. {{w|PostScript}} (the language {{w|PostScript fonts|some fonts}} are written in) is capable of recursion and PostScript Type 3 fonts are able to use the full language. This could create effects like fonts with complicated fractal borders and fill patterns - but the increase in processing time would contribute to seeming brokenness of the computer (or printer) rendering the font.&lt;br /&gt;
|-&lt;br /&gt;
| Regex matching valid EBNF&lt;br /&gt;
| EBNF refers to {{w|Extended Backus–Naur Form}}, which is used to define {{w|Formal Language|formal languages}}. It is far too complex for a {{w|Regular_Expression|regular expression}} to determine whether it is valid or not. There is some irony in using regex to test the validity of something which ''defines'' the validity of things like regex.&lt;br /&gt;
|-&lt;br /&gt;
| [https://www.google.com/search?q=Hardlinks+Turing+complete Hardlinks Turing complete]&lt;br /&gt;
| In some filesystems, for example {{w|ext4}} and {{w|NTFS}}, a single file may be referenced by different names anywhere in the filesystem.  These filenames are termed &amp;quot;hard links&amp;quot; to the file because they are automatically resolved by the operating system to the file metadata.  &amp;quot;Soft&amp;quot; or &amp;quot;symbolic&amp;quot; links are resolved indirectly via a filename, which may reside anywhere.  A file is deleted when the last hard link to it is unlinked; a soft link exists independently of its target.&lt;br /&gt;
&lt;br /&gt;
{{w|Turing completeness}} is the {{w|computational complexity}} required to simulate any other Turing complete system (given an infinite amount of memory).  Recently there have been cases where unexpected mechanisms from card games to text parsers were proved to be Turing complete. Hardlinks being Turing complete would imply that creating and deleting hardlinks alone is enough to statisfy the requirements of Turing completeness.&lt;br /&gt;
|-&lt;br /&gt;
| Opposite of safe mode&lt;br /&gt;
| {{w|Safe mode}} is a diagnostic mode of an operating system or application which allows the user to troubleshoot problems by disabling unnecessary functionality. The &amp;quot;opposite of safe mode&amp;quot; implies a &amp;quot;dangerous&amp;quot; mode where the purpose is to cause problems rather than fix them.&lt;br /&gt;
|-&lt;br /&gt;
| Predictive touchpad&lt;br /&gt;
| {{w|Predictive text}} is a feature of many smartphone keyboards that predicts the most likely word the user wishes to type, and then gives the user the option to place the word in the sentence without typing the whole word. A {{w|touchpad}} is a computer pointing device, similar to a {{w|computer mouse}}. The idea of a &amp;quot;predictive touchpad&amp;quot; seems absurd because, as opposed to typed words, there are not a limited number of swipe combinations that are possible on a touchpad. A &amp;quot;predictive touchpad&amp;quot; implies that a computer could predict where the user was going to move the mouse or click, which is clearly unreasonable. {{Citation needed}} &lt;br /&gt;
|-&lt;br /&gt;
| Google docs from bootloader&lt;br /&gt;
| Google docs relies on programs and libraries much more complex than a bootloader could run.&lt;br /&gt;
|-&lt;br /&gt;
| Hardware acceleration red channel only&lt;br /&gt;
| {{w|Hardware acceleration}} means that certain calculations are not performed by the computer's {{w|CPU}} but by a &amp;quot;specialized&amp;quot; processor, e.g. a {{w|GPU}} which is part of the graphics adapter. This speeds up output, especially if complex 3D calculations are required and reduces CPU load. To use this function only on a single color channel seems pretty useless, but one may want to troubleshoot a program that displays only red when hardware acceleration is enabled.&lt;br /&gt;
|-&lt;br /&gt;
| autoexec code posted by verified twitter users&lt;br /&gt;
| Automatically executing code from the internet is generally a terrible idea, because it could be written by someone with malicious intent and harm your computer. The joke here is that the code would only be executed if written by someone who has been &amp;quot;verified&amp;quot; on Twitter. Twitter's verification service only serves to show that a user is who they claim to be, not whether or not their code can be trusted, so this would provide little protection.&lt;br /&gt;
|-&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Coloured and styled as the logo]&lt;br /&gt;
:Google&lt;br /&gt;
&lt;br /&gt;
:[Google Search bar, with a drop down box with faded text, implying recent searches]&lt;br /&gt;
:Google translate syntax highlighting&lt;br /&gt;
:Autodetect mixed bash zsh&lt;br /&gt;
:CPU temperature sensor limits&lt;br /&gt;
:GIF to XLS&lt;br /&gt;
:Clock speed jumper sample rate&lt;br /&gt;
:Clean reinstall keybinding&lt;br /&gt;
:Cron job to update crontab&lt;br /&gt;
:fsck Chrome extension&lt;br /&gt;
:Recursive font&lt;br /&gt;
:Regex matching valid EBNF&lt;br /&gt;
:Hardlinks Turing complete&lt;br /&gt;
:Opposite of safe mode&lt;br /&gt;
:Predictive touchpad&lt;br /&gt;
:Google docs from bootloader&lt;br /&gt;
:Hardware acceleration red channel only&lt;br /&gt;
&lt;br /&gt;
:[Bold, below page outline]&lt;br /&gt;
:I have no idea why my computers are always broken&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>141.101.75.245</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1597:_Git&amp;diff=104326</id>
		<title>Talk:1597: Git</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1597:_Git&amp;diff=104326"/>
				<updated>2015-11-02T10:56:41Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.75.245: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;If someone is interested, the best book I've read on it is [http://www.git-scm.com/book/en/v2 Pro Git]. The chapters 2 and 3 explain pretty well this mess of branching and merging. But it's true that it takes a bit of patience to go over it all. [[Special:Contributions/108.162.228.35|108.162.228.35]] 08:47, 30 October 2015 (UTC)&lt;br /&gt;
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Also take a look at [http://nvie.com/posts/a-successful-git-branching-model/ GitFlow: A Successful Git Branching Model]. Though Randall is correct there usually comes a time when it is easier to give up and &amp;quot;start again&amp;quot;. [[Special:Contributions/162.158.34.147|162.158.34.147]] 08:53, 30 October 2015 (UTC)&lt;br /&gt;
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I never liked the name of this piece of software; in British English, the name &amp;quot;git&amp;quot; is mildly rude :-)  &lt;br /&gt;
https://en.wikipedia.org/wiki/Git_(slang) . [[User:Gearoid|Gearóid]] ([[User talk:Gearoid|talk]]) 09:20, 30 October 2015 (UTC)&lt;br /&gt;
:According to word of god it was on purpose: https://en.wikipedia.org/wiki/Git_(software)#History [[Special:Contributions/162.158.22.46|162.158.22.46]] 11:41, 30 October 2015 (UTC)&lt;br /&gt;
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'Internally, Git works by saving the differences between various versions of the files, rather than creating a new copy each time the user &amp;quot;commits&amp;quot; the current version of the code.' - It is exactly the opposite. It stores whole files, or rather all committed pieces of data (blobs). See http://gitready.com/beginner/2009/02/17/how-git-stores-your-data.html [[Special:Contributions/141.101.88.202|141.101.88.202]] 09:38, 30 October 2015 (UTC)TK&lt;br /&gt;
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: It is stored as diffs in pack file. Whole file (loose object) are packed automatically by default. &lt;br /&gt;
:&lt;br /&gt;
: See  https://schacon.github.io/gitbook/7_the_packfile.html and https://www.kernel.org/pub/software/scm/git/docs/git-pack-objects.html &lt;br /&gt;
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[[Special:Contributions/162.158.177.59|162.158.177.59]] 10:15, 30 October 2015 (UTC)&lt;br /&gt;
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::Not sure what pack files are used for, but data is stored as is and named by the SHA-1 of its contents.  See [https://schacon.github.io/gitbook/1_the_git_object_model.html object model] in the same reference.  [[User:Walenc|Walenc]] ([[User talk:Walenc|talk]]) 16:02, 30 October 2015 (UTC)&lt;br /&gt;
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I feel like this article should end with a quick guide to git commands. {{unsigned ip|108.162.216.27}}&lt;br /&gt;
&lt;br /&gt;
Well, I feel this article focuses on explaning git too much that it loses the point of the joke. We have Wikipedia to refer readers to ... The thing is, not just users who are unable to use git beyond a few basic commands, but also those who understand git often use some sort of &amp;quot;start over&amp;quot; method because an action looking perfectly legit got the repository into unusable state, where recovery is much more difficult than reapplying patches. For one of the most common, search for &amp;quot;detached head&amp;quot;, for example - especially funny when git insists on falling into that state after checking out master which is in direct contradiction to what docs say when it happens. But I don't feel like rewriting that, sorry :-/ --kavol, [[Special:Contributions/141.101.96.206|141.101.96.206]] 16:04, 30 October 2015 (UTC)&lt;br /&gt;
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I feel you've all been nerd-sniped. [[Special:Contributions/108.162.216.8|108.162.216.8]] 19:33, 30 October 2015 (UTC)Pat&lt;br /&gt;
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The problem is not about the working copy and about the branching tree structure and some git internals that is quite confusing.&lt;br /&gt;
This 4 years old reddit post can be used as a funny reference: https://www.reddit.com/r/programming/comments/embdf/git_complicated_of_course_not_commits_map_to/&lt;br /&gt;
&lt;br /&gt;
http://tartley.com/?p=1267&lt;br /&gt;
&amp;quot;One of the things that tripped me up as a novice user was the way Git handles branches. Unlike more primitive version control systems, git repositories are not linear, they support branching, and are thus best visualised as trees, upon the nodes of which your current commit may add new leaf nodes. To visualise this, it’s simplest to think of the state of your repository as a point in a high-dimensional ‘code-space’, in which branches are represented as n-dimensional membranes, mapping the spatial loci of successive commits onto the projected manifold of each cloned repository.&amp;quot; {{unsigned ip|108.162.210.212}}&lt;br /&gt;
&lt;br /&gt;
Should someone mention how git is by default used through a terminal - which is often more confusing than a GUI for most people - and that while there are graphical shells for git, some people refuse to use them because they're not fully-featured? [[Special:Contributions/108.162.221.36|108.162.221.36]] 11:43, 30 October 2015 (UTC)&lt;br /&gt;
&lt;br /&gt;
Shit. I use git for almost a year and I delete my repos more often than I'd like to admit. I'm going to read [https://www.git-scm.com/book/en/v2] and (hopefully) fix this once and for all. [[User:Kripmo|Kripmo]] ([[User talk:Kripmo|talk]]) 02:04, 31 October 2015 (UTC)&lt;br /&gt;
:It was way easier than I thought. This is what I needed: git reset --hard &amp;lt;commit before fuck up&amp;gt;. Its alias will be fu. [[User:Kripmo|Kripmo]] ([[User talk:Kripmo|talk]]) 08:10, 31 October 2015 (UTC)&lt;br /&gt;
&lt;br /&gt;
The really sad part of all this is that if you work in a multi-dev environment and &amp;lt;i&amp;gt;anyone&amp;lt;/i&amp;gt; on the team is doing what Cueball suggests, it negates every other user's ability to use the main trunk properly. [[User:Ericm301|Ericm301]] ([[User talk:Ericm301|talk]]) 02:26, 31 October 2015 (UTC)&lt;br /&gt;
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Hasn't it got too extensive about git? I've never used git but quite understood the comedy. I just visited this page to know about git.txt and there's nothing about it but just long text that doesn't help whatsoever to understand the comic.  [[Special:Contributions/141.101.84.125|141.101.84.125]] 08:45, 31 October 2015 (UTC)&lt;br /&gt;
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:I agree completely! I've stripped out the overlong discussion of git's features. --[[User:Slashme|Slashme]] ([[User talk:Slashme|talk]]) 00:12, 1 November 2015 (UTC)&lt;br /&gt;
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AFAIK, the git.txt is not the part of the Git itself. I just added it to explanation. [[Special:Contributions/162.158.114.231|162.158.114.231]] 20:21, 31 October 2015 (UTC)&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;This comic is a play on how git, a popular version control system, is misused by people who have a very poor understanding of its inner workings.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
Comically missing the point. That is NOT what the comic is about, that is a poor excuse from a fanboy. --[[Special:Contributions/162.158.90.159|162.158.90.159]] 12:00, 1 November 2015 (UTC)&lt;br /&gt;
: I agree the verbose &amp;quot;explanation&amp;quot; misses the point. The reality is that git is a confusing mess from a user's point of view. It's a very nice and powerful design from a technical point of view yet one that will mostly confuse anyone who encounters it at first; most people are afraid of admitting it because they don't want to look dumb. There's beauty in a design that is user-friendly at its core, and git misses that mark. [[User:Ralfoide|Ralfoide]] ([[User talk:Ralfoide|talk]]) 17:38, 1 November 2015 (UTC)&lt;br /&gt;
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: The same can be said of Linux.  It seems to be a common theme in Linus Torvalds' work. [[Special:Contributions/108.162.249.163|108.162.249.163]] 23:52, 1 November 2015 (UTC)&lt;br /&gt;
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In pretty much every team I've worked I found there ends up being one &amp;quot;git expert&amp;quot; that raises above the rest and people continuously go see that person with &amp;quot;I don't know how to do X&amp;quot;, to which the expert will often reply with a magic unheard-of-before git command line that looks pretty much like perl line noise. [[User:Ralfoide|Ralfoide]] ([[User talk:Ralfoide|talk]]) 17:38, 1 November 2015 (UTC)&lt;br /&gt;
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In what world are telephones not an electronic mean of communication ? [[Special:Contributions/141.101.75.245|141.101.75.245]] 10:56, 2 November 2015 (UTC)&lt;/div&gt;</summary>
		<author><name>141.101.75.245</name></author>	</entry>

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