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		<updated>2026-04-15T13:47:56Z</updated>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3092:_Baker%27s_Units&amp;diff=378368</id>
		<title>3092: Baker's Units</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3092:_Baker%27s_Units&amp;diff=378368"/>
				<updated>2025-05-22T14:07:22Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 3092&lt;br /&gt;
| date      = May 21, 2025&lt;br /&gt;
| title     = Baker's Units&lt;br /&gt;
| image     = bakers_units_2x.png&lt;br /&gt;
| imagesize = 349x310px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = 169 is a baker's gross.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|This page was created by baker's bot. Don't remove this notice too soon.}}&lt;br /&gt;
&lt;br /&gt;
A '{{w|Dozen#Baker's_dozen|baker's dozen}}' is an expression referring to the number 13, as opposed to the normal 'dozen', meaning 12. This stems from a tradition in medieval times whereby salespeople would include 13 items when selling a 'dozen'. This was due to them having to pay penalties (in some regions, draconian ones) when customers were sold one item short, or not enough weight. To avoid the customer complaints and the penalty, bakers added a safety margin that allowed them to still serve a dozen in a hurry: If a miscount happened the baker would have given out twelve rolls just as ordered; if no miscount happened the baker would just be short of one inexpensive item.&lt;br /&gt;
&lt;br /&gt;
[[Randall]] proceeds to apply this principle to other things involving the number 12. A reader might anticipate this means simply applying a count of 13 of a thing, or adding one to the most prominent quantity. But it slowly becomes clear that, instead, Randall finds something about the thing that is comprised of 12 units, changes that to 13, and demonstrates the logical consequence.&lt;br /&gt;
&lt;br /&gt;
The results gradually become more unexpected and silly:&lt;br /&gt;
* Imperial feet are 12 inches long; a 'baker's foot' would be 13 inches long.&lt;br /&gt;
* Noon is 12 o'clock (also 12:00 in {{w|24-hour clock}} notation); 'baker's noon' would be 1 o'clock PM (13:00 in 24-hour notation). Local noon has often been a vital piece of information for those who need to know when the working daylight is half-way through, or specifically for noting the {{w|Solar time|local solar maximum}} for astronomical or navigation purposes (though the original &amp;quot;noon&amp;quot; {{w|Noon#Etymology|used to be}} several hours later), whilst 1PM does not usually merit any notable marker beyond those of any other &amp;quot;o'clock&amp;quot;. The inverted case to this is when it becomes a convenient time to convey a {{w|Time ball|post-noon signal}}, perhaps having observed and subsequently verified solar-noon exactly an hour earlier.&lt;br /&gt;
* Dodecahedra have 12 faces (&amp;quot;dodeca&amp;quot; = &amp;quot;twelve&amp;quot;). The best-known kind of {{w|dodecahedron}} is the regular dodecahedron, a {{w|Platonic solid}} whose faces are regular pentagons (the shape that most {{w|Dice#Polyhedral dice|d12}}s take the form of), but there are others such as the {{w|rhombic dodecahedron}} and {{w|Pyritohedron#Pyritohedron|pyritohedron}}. A 'baker's dodecahedron' would have thirteen faces, making it, in fact, a tridecahedron, typically a form with triangles, squares and pentagons. Tridecahedrons are not Platonic solids, and their use in dice-based games (though not impossible) would result in an unbalanced skew of possibilities, as well as one extra result (perhaps zero or thirteen) that a gaming system might not be designed to anticipate.&lt;br /&gt;
* Years have 12 months; a baker would celebrate 'baker's New Year's Eve' after an extra thirteenth month, on January 31 (and implying that their New Year would shift forward each year).&lt;br /&gt;
* Octaves are comprised of 12 half-steps (a half-step is the distance between adjacent notes, such as F and F#). A 'baker’s octave' would have 13 half-steps (corresponding to a minor ninth) and cause problems in musical composition, as octaves (of the baker’s variety) would be dissonant, instead of being consonant. However, Randall's musical notation actually shows a ''major'' ninth, with ''fourteen'' half-steps. If he wanted thirteen half-steps, Randall could have used D♭ instead of D, or drawn a bass clef instead of a treble clef.&lt;br /&gt;
* Trial juries in the Anglo-Saxon law tradition ({{w|Common Law}}) consist of 12 peers. The 'baker’s jury' would have 13 peers. This might be considered to make little practical difference, though it does mean that (in situations where a jury is allowed to present a majority verdict instead of requiring unanimity), the odd number of jurors would prevent exact ties. (Note that {{w|Trial by jury in Scotland|Scottish juries}}, in particular, start with the expectation of there being 15 jurors, and may well end up reduced to 13 or even 12.)&lt;br /&gt;
* The {{w|Flag of Europe}} has 12 stars forming a circle (as a symbol of harmony); unlike in the US flag, the stars do not represent member states. The flag was first adopted by the Council of Europe in 1955, when it already had 13 members - today there are over 40. The European Communities adopted the Flag of Europe in 1986 before the EC turned into the European Union. A 13th star could potentially be added to the baker's EU flag, to make a 'baker's EU flag', without major damage to the symbol. In the United States, thirteen stars in a circle is associated with the {{w|Betsy Ross flag}}, the first U.S. flag.&lt;br /&gt;
* Magnesium is the element with the ordinal number 12, with twelve protons. Aluminum is number 13, and is a very different material.{{Citation needed}} 'Baker's magnesium' actually has more applications than standard magnesium in baking (namely, tinfoil, which is actually made of aluminum, not tin), but it does not have as much nutritional value.&lt;br /&gt;
* In the title text, a count of 144 (12x12) is a gross. Thus, 169 (13x13) would be a 'baker's gross', an addition of not just one but 25 units.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Don't remove too soon.}}&lt;br /&gt;
:&amp;lt;u&amp;gt;Baker's units&amp;lt;/u&amp;gt;&lt;br /&gt;
:[A formation comprising of 13 items] - Baker's dozen&lt;br /&gt;
:[A ruler divided into 13 parts] - Baker's foot&lt;br /&gt;
:1:00 PM - Baker's noon&lt;br /&gt;
:[A polyhedron with 13 faces] - Baker's dodecahedron&lt;br /&gt;
:January 31st - Baker's New Year's Eve&lt;br /&gt;
:[Two notes on a staff 13 half-steps apart] - Baker's octave&lt;br /&gt;
:[13 people standing in a row] - Baker's jury&lt;br /&gt;
:[A flag with 13 stars forming a circle] - Baker's EU flag&lt;br /&gt;
:Aluminum - Baker's magnesium&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&amp;lt;noinclude&amp;gt;&lt;br /&gt;
[[Category:Food]]&lt;br /&gt;
[[Category:Music]]&lt;br /&gt;
[[Category:Chemistry]]&lt;br /&gt;
[[Category:Math]]&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=3088:_Deposition&amp;diff=377730</id>
		<title>3088: Deposition</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=3088:_Deposition&amp;diff=377730"/>
				<updated>2025-05-13T15:11:42Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 3088&lt;br /&gt;
| date      = May 12, 2025&lt;br /&gt;
| title     = Deposition&lt;br /&gt;
| image     = deposition_2x.png&lt;br /&gt;
| imagesize = 740x272px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = P.S. If you have time travel, come to my birthday party Saturday!&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|This page was created by BEDROCK INSPECTOR NO 4. Don't remove this notice too soon.}}&lt;br /&gt;
A {{w|continental margin}} is the place on the edge of a continent where the {{w|continental crust}} is underwater, covered by relatively shallow coastal waters. A stone thrown into the river by [[Ponytail]] will potentially be {{w|Fluvial sediment processes|washed down the river}} during flood events, until it reaches coastal waters, making it a 'fluvial erratic' (see also {{w|Glacial erratic}}). Though not much more than with similar stones ''not'' thrown into the riverz which would probably also be gradually transported by a subsequent series of rising floodwaters. This continental margin is said to be {{w|passive margin|passive}}, which means that it is not currently undergoing {{w|subduction}}, where the oceanic crust slips under the continental crust, or a {{w|strike-slip fault}}, where one slides along the other, both of which can mechanically or thermally transform any seafloor material. Absent such occurrences, this causes piles of {{w|sediment}} to accumulate on the {{w|continental shelf}} with a minimum of additional geological disturbance.&lt;br /&gt;
&lt;br /&gt;
This rock's eventual resting place in the sediment seems destined to be compressed by further overlying sedimentation and solidify over geologic timescales into {{w|shale}} or other similar sedimentary rock types. As shown, 100 million years later the sea level has gone down (and/or the bedrock has risen), exposing the shale, and recent erosion/quarrying has caused it to become a cliff face that eventually re-exposes the original rock that Ponytail threw into the river, apparently just at the right time and place to be discovered or uncovered by [[2990: Late Cenozoic|aliens/far-future-earthlings]].&lt;br /&gt;
&lt;br /&gt;
These beings, who appear to be digging with relatively primitive hand-tools that are anachronistic, given the apparent use of antigravity personal conveyors with mechanical manipulators, have found a rock. Whether or not they comprehend it, this seems to be one of those left with a carved message by Ponytail, saying &amp;quot;This bedrock inspected by No. 5&amp;quot;. This is a parody of a typical {{w|quality control}} label left attached to (or hidden within) clothing, to reassure any purchaser and/or help identify which manufacturing and inspection path any newly discovered {{w|product defect}} had passed through.&lt;br /&gt;
&lt;br /&gt;
In the title text, Ponytail suggests that the aliens may have access to {{w|time travel}} technology, and invites them to her birthday party (next) Saturday, which is rather at odds with the official tone of the original message.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Don't remove this notice too soon.}}&lt;br /&gt;
&lt;br /&gt;
:[Cueball approaches Ponytail, chiselling a rock on a shoreline next to a river with shallow rolling hills in the background]&lt;br /&gt;
:Cueball: What are you doing?&lt;br /&gt;
:Ponytail: This river empties onto a passive continental margin.&lt;br /&gt;
&lt;br /&gt;
:[Cueball and Ponytail stand talking, Ponytail holding several flat rocks, in an otherwise empty and frameless panel]&lt;br /&gt;
:Ponytail: If I chisel notes onto these rocks and throw them into the sea, they might be incorporated into some shale cliff in the distant future.&lt;br /&gt;
&lt;br /&gt;
:[Silhouetted scene of Ponytail as she throws multiple rocks off frame to the right, Cueball watching from behind her]&lt;br /&gt;
:[From off-panel, sound effect of a rock hitting water:] PLOP&lt;br /&gt;
&lt;br /&gt;
:[Two 'bug-eyed aliens', sitting in personal 'hover-saucers' look rightwards at an exposed rock-face. A pick and shovel are left stuck in the ground, and one of the 'saucers' sports a mechanical arm currently holding a loose fragment of rock]&lt;br /&gt;
:[Panel label:] 100 million years later&lt;br /&gt;
:[Text originating from the held rock fragment:] This bedrock inspected by No. 5&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&amp;lt;noinclude&amp;gt;&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Geology]]&lt;br /&gt;
[[Category:Aliens]]&amp;lt;!-- or future-earthlings! --&amp;gt;&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2708:_Mystery_Asterisk_Destination&amp;diff=376345</id>
		<title>2708: Mystery Asterisk Destination</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2708:_Mystery_Asterisk_Destination&amp;diff=376345"/>
				<updated>2025-05-05T09:30:49Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: ...punc&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2708&lt;br /&gt;
| date      = December 7, 2022&lt;br /&gt;
| title     = Mystery Asterisk Destination&lt;br /&gt;
| image     = mystery_asterisk_destination_2x.png&lt;br /&gt;
| imagesize = 288x248px&lt;br /&gt;
| noexpand  = true&lt;br /&gt;
| titletext = If you ever see the † dagger symbol with no unmatched footnote, it means the writer is saying the phrase while threatening you with a dagger.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
&lt;br /&gt;
This comic pertains to the use of asterisks and other symbols for [[1208|footnotes]] or endnotes.* It jokes that when an asterisk appears after a word without a corresponding footnote, it refers to this comic.* Missing footnotes can be frustrating, so this comic may provide closure for some readers; similar in spirit to [[391: Anti-Mindvirus]] and opposite to the tension created by the unmatched parenthesis in [[859: (]]. Better close that).&lt;br /&gt;
&lt;br /&gt;
The title text jokes that unmatched instances of † (the dagger symbol, also used for footnotes) are threats being made by the author to the reader with a physical dagger. As of this writing, it states &amp;quot;If you ever see the † dagger symbol with no '''''un'''''matched footnote...&amp;quot;, forming a double negative. This is likely a typo intended as &amp;quot;...no matching footnote.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
† In some contexts, an unpaired asterisk or dagger may not refer to a footnote, and thus not constitute a mystery. Examples include programming languages and mathematical expressions using asterisks such as for the multiplication operator, and dates of birth and death which are sometimes indicated with an asterisk or dagger respectively.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[A blank panel with text at the bottom.]&lt;br /&gt;
:'''*'''Whenever you see a mystery asterisk that doesn't have a matching footnote, it points here.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Footnotes]]&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Category:Dynamic_comics&amp;diff=376344</id>
		<title>Category:Dynamic comics</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Category:Dynamic_comics&amp;diff=376344"/>
				<updated>2025-05-05T09:29:00Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: That's a static comic.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;There are various types of dynamic xkcd comics, including animated ones, interactive ones, and ones that modify their content based on specific factors. There are several potential reasons why a comic can have been made dynamic, such as:&lt;br /&gt;
&lt;br /&gt;
*[[:Category:April fools' comics|April fools' comics]], such as: [[unixkcd]], [[880: Headache]], [[1037: Umwelt]], [[1193: Externalities]], [[1350: Lorenz]], [[1506: xkcloud]], [[1663: Garden]], [[1975: Right Click]], [[2131: Emojidome]], [[2288: Collector's Edition]], [[2445: Checkbox]], [[2601: Instructions]], [[2765: Escape Speed]], [[2916: Machine]], [[3074: Push Notifications]].&lt;br /&gt;
&lt;br /&gt;
*Simple cyclic animations, such as: [[961: Eternal Flame]], [[1116: Traffic Lights]], [[1264: Slideshow]], [[1331: Frequency]], [[1335: Now]], [[2293: RIP John Conway]], [[dot]].&lt;br /&gt;
&lt;br /&gt;
*Progressively revealing frames of a storyboard, such as: [[Countdown in header text]], [[1190: Time]], [[1446: Landing]].&lt;br /&gt;
&lt;br /&gt;
*Extensive explorable environments, such as: [[826: Guest Week: Zach Weiner (SMBC)]], [[1110: Click and Drag]], [[1608: Hoverboard]], [[1416: Pixels]], [[2067: Challengers]], [[2712: Gravity]], [[980: Money]].&lt;br /&gt;
&lt;br /&gt;
*Other (miscellaneously) interactive comics, such as: [[1525: Emojic 8 Ball]], [[2198: Throw]], [[Simple Writer]].&lt;br /&gt;
&lt;br /&gt;
[[Category:Distinctive comics]]&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2459:_March_2020&amp;diff=376079</id>
		<title>Talk:2459: March 2020</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2459:_March_2020&amp;diff=376079"/>
				<updated>2025-05-02T09:26:33Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: Undo revision 376024 by Gatorized (talk) Unsigned, top-posted, nonsensical, trolling *and* not properly punctuated.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~ and don't delete this text. New comments should be added at the bottom.--&amp;gt;&lt;br /&gt;
&lt;br /&gt;
Depending upon the local vaccine-tied gap between the two jabs, the span of time across those frames could easily be 12 weeks (1 actual month of stasis plus almost 2 more, that are not illustrated) or 8 weeks (1+1ish months between, then you may assume another unillustrated extra buffer after the second before 'normallity resumes'), making the resumed month correct after all. (Also, March being 31 days long, recycling it in a 'perpetual calendar' way would shift the month-boundaries over by ¿9? days, which might factor in. Although that'd make it hard to make it so the end of the final March ends exactly a day before the continuation-May is supposed to start for all, without some other finagling.) [[Special:Contributions/141.101.107.166|141.101.107.166]] 05:23, 6 May 2021 (UTC)&lt;br /&gt;
:In the US, the two multi-dose vaccines, Pfizer and Moderna, require 3 weeks and 4 weeks, respectively, between doses. Unsure of the reason for why there seems to be a &amp;quot;time jump&amp;quot;. [[Special:Contributions/172.69.34.26|172.69.34.26]] 06:23, 6 May 2021 (UTC)&lt;br /&gt;
::I think the only reason there is only 15 calendars in stead of 17 is because he could then make a 3x5 grid. (A 4x4grid would also be one too little). And also I think it could have made much more sense to put on all 17 months, to avoid this confusion. But I do not think he has made 15 for any time reason. If he had done this in April, and made a 4x4 grid it would have been nicer, but then there would have been a standing Cueball in the first panel of the last row. But the last month would have been April which would fit with a year plus 4 months. But having the calendars months shift through the top row works great, which would not work in 4x4 grid. And since time stood still for Randall during those 14 months, then having 12 or 14 or 10 panels doesn't really matter. The important message is that time was at a standstill until May 2021. (He also needed 14 days after the last vaccine to be fully vaccinated). In Denmark where the AstraZeneca vaccine was taken out of use, after many had only the first shot, the second shot will be with another vaccine, and will be administrated 12 weeks after the first AztraZeneca vaccine. I know, I'm one of those that will have my second dose this way, in a few weeks time. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 09:36, 6 May 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
Anyone else noticed all calendars seem to be empty, even the May 2021 one? -- Tobias [[Special:Contributions/172.68.110.38|172.68.110.38]] 09:53, 6 May 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Fifteen&amp;quot; days to slow the spread? More like 416+ (Yes, I'm counting...) [[User:Wilh3lm|Wilh3lm]] ([[User talk:Wilh3lm|talk]]) 10:16, 6 May 2021 (UTC)&lt;br /&gt;
&lt;br /&gt;
Should the calendars be seen to represent Cueball's social life / social engagements?  If so, pre-pandemic he had nothing going on.  During pandemic, he (and everyone else essentially) had nothing going on.  After full vaccination, he still apparently has nothing going on...  Or, do the calendars merely represent time passing, and Cueball's life &amp;quot;froze&amp;quot; in March 2020, and only just resumed its normal flow following his second vaccination, making May 2021 his first &amp;quot;return to normal time flow&amp;quot; month?&lt;br /&gt;
&lt;br /&gt;
There are not enough calendars. It feels like it has been March 2020 for about 10 years, so there should be about 40 more rows.&lt;br /&gt;
&lt;br /&gt;
Not sure that {{W|MacGuffin}} is the best analogy to use in the explanation.  As I understand it, a MacGuffin is just a symbolic item, with no function except as a goal.  Whereas the vaccine has a clear function in controlling the pandemic and (in this case) allowing time to progress.  [[Special:Contributions/162.158.142.164|162.158.142.164]] 18:36, 6 May 2021 (UTC)&lt;br /&gt;
:He's not saying that it's a MacGuffin in this case, but it's often a MacGuffin in the movie trope that the line is patterned off. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 19:41, 6 May 2021 (UTC)&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:622:_Haiku_Proof&amp;diff=88497</id>
		<title>Talk:622: Haiku Proof</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:622:_Haiku_Proof&amp;diff=88497"/>
				<updated>2015-04-05T14:40:57Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;A prime number must also be a natural number greater that one. {{unsigned|‎204.8.8.13}}&lt;br /&gt;
&lt;br /&gt;
I removed the paragraph about the haiku being off, as it is not &amp;quot;top prime's divisors,&amp;quot; but &amp;quot;top prime's divisors' &amp;quot; (notice the second apostrophe). So the question is actually what the (prime) factors of the product of all prime divisors plus one are. [[User:KillaBilla|KillaBilla]] ([[User talk:KillaBilla|talk]]) 21:57, 12 June 2014 (UTC)&lt;br /&gt;
&lt;br /&gt;
: I've put it back, since the paragraph is correct - the proof is incorrect. That second apostrophe just means it is the product belonging to the top prime's divisors. The product of the top prime's divisors is just the top prime. --[[Special:Contributions/141.101.98.234|141.101.98.234]] 14:40, 5 April 2015 (UTC)&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=622:_Haiku_Proof&amp;diff=88496</id>
		<title>622: Haiku Proof</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=622:_Haiku_Proof&amp;diff=88496"/>
				<updated>2015-04-05T14:37:54Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: Undo revision 69420 by KillaBilla (talk) - this paragraph is correct&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 622&lt;br /&gt;
| date      = August 12, 2009&lt;br /&gt;
| title     = Haiku Proof&lt;br /&gt;
| image     = haiku_proof.png&lt;br /&gt;
| titletext = After somewhere around 40 hours, there's no academic reason to go to the class. Only go for the hallucinations.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{w|Euclid's theorem}} states that there are an infinite number of primes, prime numbers being numbers that are only divisible by themselves and 1. The most notable proof of this theorem, and the one presented in this comic, was first given by Euclid himself in his ''{{w|Euclid's Elements|Elements}}''. A more traditional form of this proof follows:&lt;br /&gt;
&lt;br /&gt;
:If we suppose that there are a finite number of primes, then they must have a product, i.e. ''p''&amp;lt;sub&amp;gt;1&amp;lt;/sub&amp;gt;''p''&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;...''p''&amp;lt;sub&amp;gt;n&amp;lt;/sub&amp;gt; = ''q''. Now consider ''q'' + 1. If this number is prime itself, then we have discovered a new prime number, contrary to the assumption that we had listed them all. If it is not prime, it must have a prime divisor. Since all of the ''p''&amp;lt;sub&amp;gt;k&amp;lt;/sub&amp;gt; are a factor of ''q'', they cannot be a divisor of ''q'' + 1. So ''q'' + 1 is divisible by a prime not on the list, which again is a contradiction. Therefore, there must be infinitely many primes.&lt;br /&gt;
&lt;br /&gt;
The comic essentially takes this proof and states it in the form of a {{w|haiku}}, which is a traditional form of Japanese poetry which is in Japanese broken up into patterns of {{w|morae}}, a unit that measures the length of sound. A haiku consists of three lines with 5, 7 and 5 morae respectively per line. This is less easy to do in English as English doesn't use the concept of syllable length, so we count haikus according to the syllables in each line.&lt;br /&gt;
&lt;br /&gt;
The haiku proof given is slightly off, as the first line talks about the &amp;quot;top prime's divisors,&amp;quot; which makes no sense because the top prime doesn't have any divisors besides itself and one. You need to take the product of ''all'' primes, not just one. But, hey, it's a hallucination.&lt;br /&gt;
&lt;br /&gt;
The comic and title text conclude that going to class while sleep-deprived is an interesting, but entirely noneducational, experience.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Students are sitting at desks.]&lt;br /&gt;
:Megan: How do you know there are an infinite number of primes?&lt;br /&gt;
:Miss Lenhart: I'll answer in haiku!&lt;br /&gt;
&lt;br /&gt;
:Miss Lenhart: Top prime's divisors'&lt;br /&gt;
&lt;br /&gt;
:[Miss Lenhart floats into the air.]&lt;br /&gt;
:Miss Lenhart: Product (plus one)'s factors are...?&lt;br /&gt;
&lt;br /&gt;
:[Miss Lenhart wafts over the students.]&lt;br /&gt;
:Miss Lenhart: Q.E.D., bitches!&lt;br /&gt;
:Cuebal [in thought bubble]: Wow, after the 48-hour sleep-dep mark, lectures get ''really'' interesting.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Miss Lenhart]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Math]]&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1288:_Substitutions&amp;diff=77694</id>
		<title>1288: Substitutions</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1288:_Substitutions&amp;diff=77694"/>
				<updated>2014-10-23T18:24:19Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1288&lt;br /&gt;
| date      = November 8, 2013&lt;br /&gt;
| title     = Substitutions&lt;br /&gt;
| image     = substitutions.png&lt;br /&gt;
| titletext = INSIDE ELON MUSK'S NEW ATOMIC CAT&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
[[Randall|Randall Munroe]] is playing off of the fact that many readers of modern news articles quickly become bored with the legal and political jargon. He suggests that by substituting certain words for others can make reading the article more interesting, albeit less accurate. Although since Randall [[558: 1000 Times|doesn't think very]] highly [[932: CIA|of the news]], he's probably suggesting this chart wouldn't make them less accurate at all.&lt;br /&gt;
&lt;br /&gt;
For example, a sentence that reads&lt;br /&gt;
:Witnesses reported that the suspect allegedly escaped unharmed.&lt;br /&gt;
would be changed to&lt;br /&gt;
:These dudes I know reported that the suspect kinda probably escaped unharmed.&lt;br /&gt;
&lt;br /&gt;
This substitution does not change the meaning much, and the original sentence does not lose much of its accuracy. However, for substitutions later in the comic, a sentence may be changed as following&lt;br /&gt;
:A new study finds that senators and other congressional leaders are increasingly likely to view election results on their smartphone.&lt;br /&gt;
into&lt;br /&gt;
:A Tumblr post finds that elf-lords and other river spirits are increasingly likely to view eating contest results on their Pokédex.&lt;br /&gt;
&lt;br /&gt;
Which is less meaningful, but more interesting.&lt;br /&gt;
&lt;br /&gt;
The final substitution returns from the realm of the ridiculous to replacing &amp;quot;could not be reached for comment&amp;quot; with &amp;quot;is guilty and everyone knows it.&amp;quot; If a journalist writes a story about an accused suspect but is unable to contact them or receives no response from them, they will write that the person &amp;quot;could not be reached for comment.&amp;quot; Randall's whimsical assumption that silence implies guilt is so common that juries are instructed that they should not infer guilt if the defendant fails to testify, particularly in nations which have a right against self-incrimination.&lt;br /&gt;
&lt;br /&gt;
[https://chrome.google.com/webstore/detail/xkcd-substitutions/jkgogmboalmaijfgfhfepckdgjeopfhk?hl=en&amp;amp;gl=001 Chrome] and [https://addons.mozilla.org/en-US/firefox/addon/xkcd-substitutions/?src=ss Firefox] extensions are available for applying the substitutions on webpages.&lt;br /&gt;
&lt;br /&gt;
'Spaaace' is a reference to the Space Core from {{w|Portal 2}}.&lt;br /&gt;
&lt;br /&gt;
The {{w|Virtual Boy}} is a table-top video game console made by Nintendo released in 1995, and discontinued about the same year. It achieved true-3D graphics through the use of a large visor containing a pair of LED screens.&lt;br /&gt;
&lt;br /&gt;
The Pokédex is a device in the {{w|Pokémon|Pokémon world}} that records the data of captured Pokémon.&lt;br /&gt;
&lt;br /&gt;
{{w|Homestar Runner}} is the title character of a Flash-animated web cartoon series, known for being an idiot.&lt;br /&gt;
&lt;br /&gt;
At the title text {{w|Elon Musk}} is mentioned who is the CEO of {{w|Tesla Motors}}, which produces electric cars (ATOMIC CATs).&lt;br /&gt;
&lt;br /&gt;
News reports about new studies (Tumblr posts) are further lampooned in [[1295: New Study|a comic posted two weeks later]].&lt;br /&gt;
&lt;br /&gt;
Has a sequel: [[1418: Horse]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:'''Substitutions''' that make reading the news more fun:&lt;br /&gt;
&lt;br /&gt;
:Witnesses → These dudes I know&lt;br /&gt;
:Allegedly → Kinda probably&lt;br /&gt;
:New study → Tumblr post&lt;br /&gt;
:Rebuild → Avenge&lt;br /&gt;
:Space → Spaaace&lt;br /&gt;
:Google Glass → Virtual Boy&lt;br /&gt;
:Smartphone → Pokédex&lt;br /&gt;
:Electric → Atomic&lt;br /&gt;
:Senator → Elf-lord&lt;br /&gt;
:Car → Cat&lt;br /&gt;
:Election → Eating contest&lt;br /&gt;
:Congressional leaders → River spirits&lt;br /&gt;
:Homeland security → Homestar Runner&lt;br /&gt;
:Could not be reached for comment → Is guilty and everyone knows it&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Language]]&lt;br /&gt;
[[Category:Video games]]&lt;br /&gt;
[[Category:Pokémon]]&lt;br /&gt;
[[Category:Politics]]&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=239:_Blagofaire&amp;diff=74494</id>
		<title>239: Blagofaire</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=239:_Blagofaire&amp;diff=74494"/>
				<updated>2014-08-28T22:48:52Z</updated>
		
		<summary type="html">&lt;p&gt;141.101.98.234: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 239&lt;br /&gt;
| date      = March 23, 2007&lt;br /&gt;
| title     = Blagofaire&lt;br /&gt;
| image     = blagofaire.png&lt;br /&gt;
| titletext = Things were better before the Structuring and the Levels.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
Facts become distorted as time moves forward. What do we know about the Elizabethan times? They spoke strange English. What will 400 years from now think of the first twenty years of the Internet? Crazy people said crazy things online. Will we even say &amp;quot;online&amp;quot; 400 years from now? Won't the internet be everywhere, and everyone on it all the time in their retinal implants that being &amp;quot;offline&amp;quot; will seem absurd?&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Ren Faire&amp;quot; is short for &amp;quot;{{w|Renaissance Faire}}&amp;quot;, described as &amp;quot;an outdoor weekend gathering, usually held in the United States, open to the public and typically commercial in nature, which emulates a historic period for the amusement of its guests.&amp;quot; &lt;br /&gt;
&lt;br /&gt;
While {{w|Cory Doctorow}} is not in this comic, the character is {{w|cosplay}}ing him. This comic inspired several xkcd readers to give Cory Doctorow a red cape and goggles when he won the 2007 EFF Pioneer Award. Cory Doctrow's balloon is featured in [[482]].&lt;br /&gt;
&lt;br /&gt;
The title Blagofaire might be an amalgamation between Blogosphere, Medieval Faire, and Blag; Randall's way of referencing [http://blag.xkcd.com his blog].&lt;br /&gt;
&lt;br /&gt;
The title text might be a reference to Terry Pratchett's Discworld series, in which several references are made to the &amp;quot;structuring and the levels&amp;quot; of the wizards of Unseen University.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:Man in Red Cape and Goggles: Hey, it worked!&lt;br /&gt;
:Cueball: What? Who are you?&lt;br /&gt;
:Man in Red Cape and Goggles: I'm from the distant future.&lt;br /&gt;
:Cueball: Wow. Hi!&lt;br /&gt;
&lt;br /&gt;
:Man in Red Cape and Goggles: Are you a blogger? I play one of you at our festivals!&lt;br /&gt;
:Cueball: Huh?&lt;br /&gt;
:Man in Red Cape and Goggles: Like the ren faires of your time — I do reenactments.&lt;br /&gt;
&lt;br /&gt;
:Man in Red Cape and Goggles: We relive the days when the internet was new and free. The days of risky sharing, slashdot, the myspace music renaissance. The generation's finest minds meeting on comment threads, battling roving bands of trolls, and holding the great dialogues of the age!&lt;br /&gt;
&lt;br /&gt;
:Cueball: Is that how you—&lt;br /&gt;
:Man in Red Cape and Goggles: We're fuzzy on some details. Did bloggers really wear red capes and goggles and blog from high-altitude balloons?&lt;br /&gt;
:Cueball: No!&lt;br /&gt;
:Cueball: Well, Cory Doctorow does. But nobody else.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Cory Doctorow]]&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Time travel]]&lt;br /&gt;
[[Category:Social networking]]&lt;/div&gt;</summary>
		<author><name>141.101.98.234</name></author>	</entry>

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