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		<id>https://www.explainxkcd.com/wiki/api.php?action=feedcontributions&amp;feedformat=atom&amp;user=172.68.142.197</id>
		<title>explain xkcd - User contributions [en]</title>
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		<updated>2026-05-26T05:55:42Z</updated>
		<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2161:_An_Apple_a_Day&amp;diff=175097</id>
		<title>Talk:2161: An Apple a Day</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2161:_An_Apple_a_Day&amp;diff=175097"/>
				<updated>2019-06-10T18:05:40Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: Sharktocrab ftw&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;
I get that I shouldn't, but after the first sentence in the second paragrsph, I really wanted to say:&lt;br /&gt;
&amp;quot;For example, if an opponent controls a thief of sanity and you have a sharktocrab, you may adapt the sharktocrab to tap down the thief.&amp;quot;&lt;br /&gt;
(This is a Magic: The Gathering reference.) [[Special:Contributions/172.68.142.197|172.68.142.197]] 18:05, 10 June 2019 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2161:_An_Apple_a_Day&amp;diff=175095</id>
		<title>2161: An Apple a Day</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2161:_An_Apple_a_Day&amp;diff=175095"/>
				<updated>2019-06-10T18:04:14Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2161&lt;br /&gt;
| date      = June 10, 2019&lt;br /&gt;
| title     = An Apple a Day&lt;br /&gt;
| image     = an_apple_a_day.png&lt;br /&gt;
| titletext = Even the powerful, tart Granny Smith cultivar is proving ineffective against new Gran-negative doctors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an APPLE-RESISTANT DOCTOR. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&amp;quot;An apple a day keeps the doctor away&amp;quot; is a common expression. It suggests that eating one apple daily will keep you healthy, and, therefore, reduce your necessity to go to the doctor. However, in this comic, this expression is reinterpreted to mean that the reason an apple a day keeps a doctor away is because apples literally prevent doctors from coming. &lt;br /&gt;
&lt;br /&gt;
Next, when the comic says that some doctors are resistant to apples, this references situations where creatures can adapt to deal with threats. In this case, the comic advocates stockpiling apples to prepare a strategic assault on the doctors who adapted. &lt;br /&gt;
&lt;br /&gt;
In the title text, the gran-negative references bacteria staining, in which certain bacteria are stained and come out positive, and the others, negative.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:[Megan stands at a podium.]&lt;br /&gt;
:Megan: An apple a day keeps the doctor away.&lt;br /&gt;
:Or at least, it used to.&lt;br /&gt;
&lt;br /&gt;
:[The comic zooms out on the stage. Megan is pointing at a poster promimently featuring Doctor Ponytail and three apples.]&lt;br /&gt;
:Megan: Over time, some doctors have developed a resistance to apples. Keeping them away takes two or three apples instead of one.&lt;br /&gt;
:And there are worrying signs that a few doctors have become completely immune.&lt;br /&gt;
&lt;br /&gt;
:[The comic zooms in again on Megan and her podium.]&lt;br /&gt;
:So we must stockpile our finest apples in reserve, using them to fend off only the very worst doctors.&lt;br /&gt;
:Honeycrisps still work on most of them, but we don't know for how long.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2161:_An_Apple_a_Day&amp;diff=175094</id>
		<title>2161: An Apple a Day</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2161:_An_Apple_a_Day&amp;diff=175094"/>
				<updated>2019-06-10T18:03:26Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2161&lt;br /&gt;
| date      = June 10, 2019&lt;br /&gt;
| title     = An Apple a Day&lt;br /&gt;
| image     = an_apple_a_day.png&lt;br /&gt;
| titletext = Even the powerful, tart Granny Smith cultivar is proving ineffective against new Gran-negative doctors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an APPLE-RESISTANT DOCTOR. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&amp;quot;An apple a day keeps the doctor away&amp;quot; is a common expression. It suggests that eating one apple daily will keep you healthy, and, therefore, reduce your necessity to go to the doctor. However, in this comic, this expression is reinterpreted to mean that the reason an apple a day keeps a doctor away is because apples literally prevent doctors from coming. &lt;br /&gt;
&lt;br /&gt;
Next, when the comic says that some doctors are resistant to apples, this references situations where creatures can adapt to deal with threats. For example, if an opponent controls a thief of sanity and you have a sharktocrab, you may adapt the sharktocrab to tap down the thief. In this case, the comic advocates stockpiling apples to prepare a strategic assault on the doctors who adapted. &lt;br /&gt;
&lt;br /&gt;
In the title text, the gran-negative references bacteria staining, in which certain bacteria are stained and come out positive, and the others, negative.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
:[Megan stands at a podium.]&lt;br /&gt;
:Megan: An apple a day keeps the doctor away.&lt;br /&gt;
:Or at least, it used to.&lt;br /&gt;
&lt;br /&gt;
:[The comic zooms out on the stage. Megan is pointing at a poster promimently featuring Doctor Ponytail and three apples.]&lt;br /&gt;
:Megan: Over time, some doctors have developed a resistance to apples. Keeping them away takes two or three apples instead of one.&lt;br /&gt;
:And there are worrying signs that a few doctors have become completely immune.&lt;br /&gt;
&lt;br /&gt;
:[The comic zooms in again on Megan and her podium.]&lt;br /&gt;
:So we must stockpile our finest apples in reserve, using them to fend off only the very worst doctors.&lt;br /&gt;
:Honeycrisps still work on most of them, but we don't know for how long.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2161:_An_Apple_a_Day&amp;diff=175089</id>
		<title>2161: An Apple a Day</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2161:_An_Apple_a_Day&amp;diff=175089"/>
				<updated>2019-06-10T17:55:27Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: explanation skeleton&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2161&lt;br /&gt;
| date      = June 10, 2019&lt;br /&gt;
| title     = An Apple a Day&lt;br /&gt;
| image     = an_apple_a_day.png&lt;br /&gt;
| titletext = Even the powerful, tart Granny Smith cultivar is proving ineffective against new Gran-negative doctors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an APPLE-RESISTANT DOCTOR. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&amp;quot;An apple a day keeps the doctor away&amp;quot; is a common expression. It suggests that eating one apple daily will keep you healthy, and, therefore, reduce your necessity to go to the doctor. However, in this comic, this expression is reinterpreted to mean that the reason an apple a day keeps a doctor away is because apples literally prevent doctors from coming. &lt;br /&gt;
&lt;br /&gt;
Next, when the comic says that some doctors are resistant to apples, this references situations where creatures can adapt to deal with threats. For example, if an opponent controls a thief of sanity and you have a sharktocrab, you may adapt the sharktocrab to tap down the thief. In this case, the comic advocates stockpiling apples to prepare a strategic assault on the doctors who adapted. &lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2151:_A/B&amp;diff=174296</id>
		<title>Talk:2151: A/B</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2151:_A/B&amp;diff=174296"/>
				<updated>2019-05-19T18:48:30Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: request&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;
Came straight to this site after trying to read today's comic[[Special:Contributions/172.68.230.22|172.68.230.22]] 16:33, 17 May 2019 (UTC)&lt;br /&gt;
: Yeah, no kidding! Usually I get the majority of the comic and I come here for the finer points and title text (I browse these sites on my iPad, no mouse with which to see the &amp;quot;MouseOver text&amp;quot;). But this one, *whiff!*, right over my head! LOL! [[User:NiceGuy1|NiceGuy1]] ([[User talk:NiceGuy1|talk]]) 04:09, 18 May 2019 (UTC)&lt;br /&gt;
:: @NiceGuy: You can touch and hold on the image to see the mouseOver text. --[[Special:Contributions/172.68.182.136|172.68.182.136]] 06:47, 18 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
The title text refers to &amp;quot;Java script&amp;quot;, which probably is meant to reference both the programming language Java and the completely different programming language JavaScript. While the former is almost never referenced with the word script afterwards, the latter is also never referenced with a space in the middle of the word. Hence, it seems meant to further confuse which language is actually being referenced. [[Special:Contributions/172.68.132.77|172.68.132.77]] 16:39, 17 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
The title text is a pun. &amp;quot;Java script&amp;quot; means the writing system used on the island of Java, while &amp;quot;JavaScript&amp;quot; is a programming language used mainly in browsers.&lt;br /&gt;
[[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 16:51, 17 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
I'm not seeing any relevance to &amp;quot;It's Greek to me.&amp;quot; I think that's just a coincidence [[User:HisHighestMinion|HisHighestMinion]] ([[User talk:HisHighestMinion|talk]]) 17:58, 18 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
Is this actually an example of A/B testing? It seems like Cueball is in both the A and B groups (ie. he got to see both Linear A and Linear B, and compared the two). That doesn't seem to fit the definition of A/B testing which is about showing each of two random groups a different thing. [[User:Hawthorn|Hawthorn]] ([[User talk:Hawthorn|talk]]) 19:55, 18 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Linear A, on the other hand, . . . .&amp;quot; doesn't make much sense as the first item of a list. I would expect &amp;quot;Linear A, blah, blah blah . . . . Linear B, on the other hand,  blah, blah, blah . . . .&amp;quot;  [[Special:Contributions/162.158.214.34|162.158.214.34]] 23:34, 18 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
:I edited the explanation to try to address these last two comments from other readers. I also reworded/reordered the title text explanation to highlight the &amp;quot;Java script&amp;quot; pun a bit, as well as explain how performance testing determined that Linear A script rendered faster than Aksara Kawi script. [[User:Ianrbibtitlht|Ianrbibtitlht]] ([[User talk:Ianrbibtitlht|talk]]) 00:11, 19 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
I wonder if it's worth mentioning that per the title text the site is written in Linear A despite the fact that Cueball described it as gibberish in the main comic panel. This may be a reference to how programming languages usually appear as gibberish to normal users (i.e. non-programmers). [[User:Ianrbibtitlht|Ianrbibtitlht]] ([[User talk:Ianrbibtitlht|talk]]) 00:15, 19 May 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
== Request ==&lt;br /&gt;
&lt;br /&gt;
Can someone please make a re-mix of [https://xkcd.com/435/ xkcd #435] with this #2151 embedded inside it, ''two'' spaces over on the left (like math is one space over on the right of the scale) with the caption &amp;quot;Linguistics&amp;quot; under it? [[Special:Contributions/172.68.142.197|172.68.142.197]] 18:48, 19 May 2019 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2150:_XKeyboarCD&amp;diff=174134</id>
		<title>2150: XKeyboarCD</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2150:_XKeyboarCD&amp;diff=174134"/>
				<updated>2019-05-15T21:24:48Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* you would not have to use an optical sensor. Google slip ring for an example. Regardless, this would still be mechanically complex.  */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2150&lt;br /&gt;
| date      = May 15, 2019&lt;br /&gt;
| title     = XKeyboarCD&lt;br /&gt;
| image     = xkeyboarcd.png&lt;br /&gt;
| titletext = The key caps use LCD displays for all the vowels, so they can automatically adjust over the years to reflect ongoing vowel shifts while allowing you to keep typing phonetically.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a KEY BOAR USING AN XKEYBOARCD. Seems to be finished, could someone check it again before deleting this tag? Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
In the same vein as the [[:Category:xkcd Phones|xkcd Phone series]], the XKeyboarCD seems to be an overly inventive and borderline ludicrous keyboard intended for some unknown audience. It has an assortment of features (some fairly normal, some more exotic) which give it a...&amp;quot;diverse skill set&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
*'''54 Configurable Rubik's Keys'''&lt;br /&gt;
The smaller cubes on a {{w|Rubik's cube}} resemble computer keys, so this feature makes fun of that by adding a spinnable Rubik's cube above the keyboard.&lt;br /&gt;
&lt;br /&gt;
*'''Hardcoded Plastic Keys for the 5 Most Useful Emoji'''&lt;br /&gt;
This feature parodies the feature of some laptop-keyboards where it is possible to dynamically assign emojis to a small touchscreen area. Which emojis would be &amp;quot;the most useful&amp;quot; is highly subjective. For example in the comic it shows the quite popular laughing with tears emoji, along the octopus emoji and others. Notably, the &amp;quot;aerial tramway&amp;quot; was once the least-used emoji, and remains very rarely used.&lt;br /&gt;
The large size and central position of the keys make their usefulness even more questionable.&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
|-&lt;br /&gt;
! Emoji&lt;br /&gt;
! Name&lt;br /&gt;
|-&lt;br /&gt;
| 😰&lt;br /&gt;
| [https://emojipedia.org/face-with-open-mouth-and-cold-sweat/ Anxious Face With Sweat]&lt;br /&gt;
|-&lt;br /&gt;
| 😂&lt;br /&gt;
| [https://emojipedia.org/face-with-tears-of-joy/ Face With Tears of Joy]&lt;br /&gt;
|-&lt;br /&gt;
| 🐙&lt;br /&gt;
| [https://emojipedia.org/octopus/ Octopus]&lt;br /&gt;
|-&lt;br /&gt;
| 🏇&lt;br /&gt;
| [https://emojipedia.org/horse-racing/ Horse Racing]&lt;br /&gt;
|-&lt;br /&gt;
| 🚡&lt;br /&gt;
| [https://emojipedia.org/aerial-tramway/ Aerial Tramway]&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
*'''Serif Lock'''&lt;br /&gt;
{{w|Serifs}} are small lines on the ends of certain characters in fonts such as Times New Roman and Georgia. It is dependent on the font, not on the key pressed; &amp;quot;A&amp;quot; is represented by the same code regardless of its font. Since a given font almost always either has or doesn't have serifs, this key seems challenging to implement. This key could be implemented, however, by simply changing between a pair of fonts when it is pressed. What's more, the button is placed roughly where left shift is on most keyboards, liable to cause frustration.&lt;br /&gt;
&lt;br /&gt;
*'''Unlimited Key Travel'''&lt;br /&gt;
On a keyboard, key travel refers to the distance the key moves between its unpressed and pressed states. In reality, laptop keys only move a few millimeters before bottoming out, and conventional keyboards up to about a centimeter. An increased key travel may make typing more comfortable. However, the usefulness of having unlimited key travel is unclear, and the question of how this would be physically possible in the keyboard depicted remains unanswered. &lt;br /&gt;
&lt;br /&gt;
*'''Diagonal Spacebar'''&lt;br /&gt;
Instead of a wide key at the bottom that typists can hit easily with either thumb, we now have a tall, narrow key that requires being pressed with the right pinkie. This would not be a good change since most peoples' pinkies are their weakest finger.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
*'''Arrow Key (Rotate to Adjust Direction)'''&lt;br /&gt;
Most computers have four {{w|arrow keys}}: up, left, right, and down. However, the XKeyboarCD just has one that can be rotated. This has the added bonus of allowing the arrow keys to point more than four different directions. While theoretically useful and innovative  (it can find use as a joystick, for example), this comes at the cost of compatibility with certain programs, such as older video games. It would also be awkward to operate as going from horizontally left to horizontally right, for example, would require the user to rotate the key first and then press it which wastes precious time when playing a video game. There is also the problem of connecting the key since it would presumably have to be rotated more than 360 degrees in one direction (think of the human neck). This would be mechanically complex which adds to the cost of the keyboard. &lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
*'''15 Puzzle-Style Numberpad'''&lt;br /&gt;
A {{w|15 puzzle}} is a square containing fifteen smaller squares and one blank spot, which allows the squares to be moved around. The squares are shuffled and then reassembled as a game or pastime, and are usually labelled 1-15 (as is the case here) or, when assembled properly, create a picture. A {{w|Numeric keypad|numberpad}} in this style would be frustrating to use for typing numbers, as they could shift (or be shifted) around, but could provide a fun feature to use as a game. How this would be used to generate numeric input is unclear, but the presence of 16 positions suggests {{w|hexadecimal}} input is possible.&lt;br /&gt;
&lt;br /&gt;
*'''Ergonomic Design'''&lt;br /&gt;
&lt;br /&gt;
The cylindrical portion of the keyboard is advertised as being an ergonomic design.  Ergonomic keyboards do tend to be curved, to follow natural arm and finger movements more closely, and some ergonomic keyboards come in unconventional form factors, such as vertical keyboards, to allow the user's hands to rest in more neutral positions or to change positions throughout the day.  However, the cylinder shape presented here requires the user to lift and twist his arms to reach certain keys, which would be an even more strenuous motion than typing on a standard keyboard. &lt;br /&gt;
&lt;br /&gt;
*'''Title Text'''&lt;br /&gt;
The title text references sound changes in languages. Every language (and indeed, every dialect) routinely undergoes changes in its sounds and phonemes, in a mostly regular and systematic way. While not only vowels are affected, in languages with many vowels such as English, they're particularly likely to shift around and/or merge. While having dynamic keycaps that change can actually come in handy, the feature of only having vowels change in response to sound shifts is a bit less so.&lt;br /&gt;
&lt;br /&gt;
First, while changes in how we pronounce words are always ongoing, the way we write words down tends to stay relatively static, and thas wi wud faind that woeds bikam incomprihensibal du to nou longer biing spelled as thei woer bifor. Second, English only uses five glyphs (aeiou) and a variety of methods to represent four times as many vowel sounds, so the software would need to have a way to handling that (&amp;quot;bird&amp;quot; and &amp;quot;turn&amp;quot;, for example, have the same vowel but are represented by &amp;quot;ir&amp;quot; and &amp;quot;ur&amp;quot;). Third, vowel shifts are not ubiquitous: the {{w|Caught-cot merger}}, for example, is a phenomenon happening across some parts (but not all) of the US and UK. Therefore, while some people would say &amp;quot;caught&amp;quot; and &amp;quot;cot have the same vowel it should be spelled the same by the keyboard, but others would say they're two different vowels and should not be spelled identically. Fourth, sound shifts tend to occur over a relatively long period of time (in terms of human lifetimes), so a user would probably find the keycaps only change once or twice. All in all, this is not a very useful feature.&lt;br /&gt;
&lt;br /&gt;
An alternative explanation is that the keys actually map to the {{w|International Phonetic Alphabet}} and converts what you type into English words (and the vowel changes). The IPA is an alphabet used in linguistics and language teaching, designed to represent every phoneme present in languages of the world unambiguously, with optional modifiers to indicate more subtle nuances in pronunciation, intonation and speech pathology. This alphabet consists of 107 letters and 56 modifiers (with some letters shared with the Latin and Greek alphabets), which would explain the large number of keys. In that case, the feature remains questionable since it only handles vowel shifts and not consonants, and anybody who'd use an IPA-keyboard would probably need to type out the phonology of other languages and appreciate not having to find a key has moved because English has undergone a vowel shift.&lt;br /&gt;
&lt;br /&gt;
=Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
Introducing the &lt;br /&gt;
XKeyboarCD&lt;br /&gt;
A keyboard for powerful users and their powerful fingers&lt;br /&gt;
&lt;br /&gt;
[Arrow to the various features of a keyboard labelling them.]&lt;br /&gt;
&lt;br /&gt;
54 Configurable Rubik's Keys&lt;br /&gt;
&lt;br /&gt;
Hardcoded Plastic Keys for the 5 Most Useful Emoji&lt;br /&gt;
&lt;br /&gt;
Serif Lock&lt;br /&gt;
&lt;br /&gt;
Unlimited Key Travel&lt;br /&gt;
&lt;br /&gt;
Diagonal Spacebar&lt;br /&gt;
&lt;br /&gt;
Arrow Key (Rotate to Adjust Direction)&lt;br /&gt;
&lt;br /&gt;
15 Puzzle-Style Numberpad&lt;br /&gt;
&lt;br /&gt;
Ergonomic Design&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2102:_Internet_Archive&amp;diff=173610</id>
		<title>2102: Internet Archive</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2102:_Internet_Archive&amp;diff=173610"/>
				<updated>2019-05-05T20:46:25Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ XKCD -&amp;gt; xkcd&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2102&lt;br /&gt;
| date      = January 23, 2019&lt;br /&gt;
| title     = Internet Archive&lt;br /&gt;
| image     = internet_archive.png&lt;br /&gt;
| titletext = The fact that things like the npm left-pad incident are so rare is oddly reassuring.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
The {{w|Internet Archive}} is a project that is invaluable for internet research. It is a public archive of information, including public domain books and music. It also runs the {{w|Wayback Machine}}, an archive of backups of web pages all over the Web at various times that can be used to see past versions of a page, even if that site has since shut down. The Internet Archive accepts submissions of any type of information, including new backups of web pages and newly-made public domain content.&lt;br /&gt;
&lt;br /&gt;
Ponytail and Cueball first remark upon how weird the concept of the Internet Archive is, commenting that it would seem like an implausible concept if not for the fact that it already existed.&lt;br /&gt;
&lt;br /&gt;
This revisits a point that Randall made in [[2085: arXiv]]: in the title text for that comic, he wrote,&lt;br /&gt;
&lt;br /&gt;
:''Both arXiv and archive.org are invaluable projects which, if they didn't exist, we would dismiss as obviously ridiculous and unworkable.''&lt;br /&gt;
&lt;br /&gt;
Our culture has an overarching theme of equating profit with success, so when efforts succeed due to inherent public benefit, this can often yield surprise.&lt;br /&gt;
&lt;br /&gt;
They then become more philosophical, and wonder about invaluable systems that are maintained by a just a few individuals, meaning that they could disappear if any of those people stopped doing what they were doing. They relate this to the function of the {{w|human body}}, which does contain many {{w|List of systems of the human body|systems}} whose function and inner workings are unknown to the average person.&lt;br /&gt;
&lt;br /&gt;
Again, as in [[2085: arXiv]], the two try not to &amp;quot;jinx things&amp;quot; by drawing attention to the improbability of this system working perfectly. In arXiv, when Megan exclaims that being able to post research papers as free PDFs on arXiv &amp;quot;makes no sense at all&amp;quot;, Ponytail responds, ''&amp;quot;Shhh, you'll jinx it!&amp;quot;'' Here, Cueball tells Ponytail, &amp;quot;Probably best not to think about it.&amp;quot;  This is ironic as the inclusion of this information in a popular comic like xkcd is drawing attention to it.&lt;br /&gt;
&lt;br /&gt;
As an example of &amp;quot;invaluable systems maintained by just a few individuals&amp;quot;, the title text refers to the &amp;quot;[https://blog.npmjs.org/post/141577284765/kik-left-pad-and-npm npm left-pad incident]&amp;quot;, a 2016 incident where a package for the {{w|npm (software)|npm}} package manager was removed from the software library by its author. As this particular package was used by many projects, both directly and indirectly, this caused a severe disruption in the software world. Randall is relieved that cases like this do not occur more frequently.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Ponytail and Cueball are walking to the right.]&lt;br /&gt;
:Ponytail: The Internet Archive is so weird. If it didn't exist, it would sound totally implausible.&lt;br /&gt;
:Cueball: ''Seriously.''&lt;br /&gt;
&lt;br /&gt;
:[Ponytail and Cueball continue walking to the right.]&lt;br /&gt;
:Cueball: Do you ever worry about how reliant we are on systems that someone happens to maintain for some reason but which could disappear at any time?&lt;br /&gt;
&lt;br /&gt;
:[Ponytail and Cueball are seen in silhouette from a distance.]&lt;br /&gt;
:Ponytail: Yeah - the same thing freaks me out about having a body.&lt;br /&gt;
:Cueball: I know, right?? I don't even know what half these parts ''do''!&lt;br /&gt;
:Ponytail: And yet if they stop, we die!&lt;br /&gt;
:Cueball: Probably best not to think about it.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Biology]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Internet]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2144:_Adjusting_a_Chair&amp;diff=173518</id>
		<title>2144: Adjusting a Chair</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2144:_Adjusting_a_Chair&amp;diff=173518"/>
				<updated>2019-05-03T17:54:10Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ 2 hours&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2144&lt;br /&gt;
| date      = May 1, 2019&lt;br /&gt;
| title     = Adjusting a Chair&lt;br /&gt;
| image     = adjusting_a_chair.png&lt;br /&gt;
| titletext = When I was looking at the box, I should have thought more about what &amp;quot;360 degrees of freedom&amp;quot; meant.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an EDITOR WITH TOO MANY DEGREES OF FREEDOM. Needs review. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic shows [[Cueball]]'s attempts to adjust a swivelling chair. As many people have experienced, these chairs can be quite difficult to raise, lower, or manoeuvre if one does not know how. Typically the chairs have multiple knobs and levers underneath the seat. One typically needs to experiment with them in a new chair to understand how to work the chair, and it appears Cueball is experimenting with them. This comically culminates in a massive chair with a big central seat and several other chairs branching off of it as Cueball continues learning how to to adjust it. The chair also apparently has so many controls it takes two hours to discover them all (although Cueball may have shown off his newly-discovered abilities in the mean time, so it might not take two hours of continuous experimentation).&lt;br /&gt;
&lt;br /&gt;
Each step gets farther away from what real-life office chairs could do. In sequence, Cueball finds his chair doing more and more surprising things:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Step|| Sound || Chair's Ability&lt;br /&gt;
|-&lt;br /&gt;
| 1 || Clunk || Being able to recline the seat back. Many chairs do have this ability, which one can use for sitting comfort or perhaps to take a nap.&lt;br /&gt;
|-&lt;br /&gt;
| 2 || Hiss || Being able to raise or lower the seat. Most chairs have this ability, but the comic departs from real chairs in two ways. First, it's much higher than any real chair. Second, he can raise the height while sitting on it; under normal design, pressing the raise/lower lever while sitting on the chair is how one ''lowers'' the seat, using one's own weight to depress the spring or hydraulic piston (which is what's used here, as indicated by the sound). However, it's not uncommon to find a chair that has worn out or been improperly calibrated, so that it does rise even when sat on (especially with lighter people), or does not lower even when not sat upon with the lever active.&lt;br /&gt;
|-&lt;br /&gt;
| 3 || Poof || Being able to have the seat inflate. Although this could be useful (e.g. to help people who need to use extra seat cushions because of hemorrhoids or coccyx injury), it is not a typical office chair capability. However, in addition to simply inflating, Cueball's chair appears to actually make the seat longer and wider. This doesn't seem to have a lot of useful application in office chairs.&lt;br /&gt;
|-&lt;br /&gt;
| 4 || Unknown || Putting out branches and growing extra seats, wheels and backs. Chairs definitely cannot do this in real life{{Citation needed}} and use cases are doubtful.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
The title text refers to a common claim on such chairs, that the chair offers 360 degrees rotation and several degrees of freedom. This is a double entendre depending on if &amp;quot;360 degrees&amp;quot; or &amp;quot;degrees of freedom&amp;quot; is interpreted as an object. However, here it means there are 360 {{w|Degrees of freedom (mechanics)|mechanical degrees of freedom}}, which is the number of independent parameters that define the configuration of an object; in other words, the chair has 360 different levers and options, far more than a standard chair{{Citation needed}}.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is shown adjusting a chair by pressing a button on the bottom of the chair. There is a caption in a frame over the tope of the panel:]&lt;br /&gt;
:Adjusting a chair:&lt;br /&gt;
&lt;br /&gt;
:[The seat back of the chair swings backward with him rather fast as shown by a few movement lines.]&lt;br /&gt;
:Chair: ''Clunk''&lt;br /&gt;
&lt;br /&gt;
:[Cueball leans forward against the new chair position and presses another button.]&lt;br /&gt;
&lt;br /&gt;
:[The chair extends to several times its previous height, very fast as shown by many lines beneath the seat.]&lt;br /&gt;
:Chair: ''Hiss''&lt;br /&gt;
&lt;br /&gt;
:[At the top of this very high seat Cueball leans forward and presses another button.]&lt;br /&gt;
&lt;br /&gt;
:[The seat expands in all directions, so Cueball only sits in the middle of it with his legs on top of the inflated cushion.]&lt;br /&gt;
:Chair: ''Poof''&lt;br /&gt;
&lt;br /&gt;
:[The chair is now a massive contraption. It has 5 bases, each with wheels as the original chair. The mains seat is in the middle of the contraption with a single trunk going up from the five bases connecting them and the large cushion of the seat. Two entire chairs are branching out from underneath this central seat, they are each hanging in a thin wire more or less upside down to each side of the main trunk. Two poles are coming up from the central seat, each with a new seat and two back-to-back seat backs. Yet another seat is supported by a thin rod connecting the two top seats, looking almost like a table between the two chairs. Cueball, is still on the main seats cushion. He is holding on to one of the poles above him as he leans down and attempts to press yet another button beneath the seat. There is a caption in a frame over the tope of the panel:]&lt;br /&gt;
:Two hours later...&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2144:_Adjusting_a_Chair&amp;diff=173517</id>
		<title>2144: Adjusting a Chair</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2144:_Adjusting_a_Chair&amp;diff=173517"/>
				<updated>2019-05-03T17:51:26Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ experimentation&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2144&lt;br /&gt;
| date      = May 1, 2019&lt;br /&gt;
| title     = Adjusting a Chair&lt;br /&gt;
| image     = adjusting_a_chair.png&lt;br /&gt;
| titletext = When I was looking at the box, I should have thought more about what &amp;quot;360 degrees of freedom&amp;quot; meant.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an EDITOR WITH TOO MANY DEGREES OF FREEDOM. Needs review. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic shows [[Cueball]]'s attempts to adjust a swivelling chair. As many people have experienced, these chairs can be quite difficult to raise, lower, or manoeuvre if one does not know how. Typically the chairs have multiple knobs and levers underneath the seat. One typically needs to experiment with them in a new chair to understand how to work the chair, and it appears Cueball is experimenting with them. This comically culminates in a massive chair with a big central seat and several other chairs branching off of it as Cueball continues learning how to to adjust it.&lt;br /&gt;
&lt;br /&gt;
Each step gets farther away from what real-life office chairs could do. In sequence, Cueball finds his chair doing more and more surprising things:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Step|| Sound || Chair's Ability&lt;br /&gt;
|-&lt;br /&gt;
| 1 || Clunk || Being able to recline the seat back. Many chairs do have this ability, which one can use for sitting comfort or perhaps to take a nap.&lt;br /&gt;
|-&lt;br /&gt;
| 2 || Hiss || Being able to raise or lower the seat. Most chairs have this ability, but the comic departs from real chairs in two ways. First, it's much higher than any real chair. Second, he can raise the height while sitting on it; under normal design, pressing the raise/lower lever while sitting on the chair is how one ''lowers'' the seat, using one's own weight to depress the spring or hydraulic piston (which is what's used here, as indicated by the sound). However, it's not uncommon to find a chair that has worn out or been improperly calibrated, so that it does rise even when sat on (especially with lighter people), or does not lower even when not sat upon with the lever active.&lt;br /&gt;
|-&lt;br /&gt;
| 3 || Poof || Being able to have the seat inflate. Although this could be useful (e.g. to help people who need to use extra seat cushions because of hemorrhoids or coccyx injury), it is not a typical office chair capability. However, in addition to simply inflating, Cueball's chair appears to actually make the seat longer and wider. This doesn't seem to have a lot of useful application in office chairs.&lt;br /&gt;
|-&lt;br /&gt;
| 4 || Unknown || Putting out branches and growing extra seats and backs. Chairs definitely cannot do this in real life{{Citation needed}} and use cases are doubtful.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
The title text refers to a common claim on such chairs, that the chair offers 360 degrees rotation and several degrees of freedom. This is a double entendre depending on if &amp;quot;360 degrees&amp;quot; or &amp;quot;degrees of freedom&amp;quot; is interpreted as an object. However, here it means there are 360 {{w|Degrees of freedom (mechanics)|mechanical degrees of freedom}}, which is the number of independent parameters that define the configuration of an object; in other words, the chair has 360 different levers and options, far more than a standard chair{{Citation needed}}.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is shown adjusting a chair by pressing a button on the bottom of the chair. There is a caption in a frame over the tope of the panel:]&lt;br /&gt;
:Adjusting a chair:&lt;br /&gt;
&lt;br /&gt;
:[The seat back of the chair swings backward with him rather fast as shown by a few movement lines.]&lt;br /&gt;
:Chair: ''Clunk''&lt;br /&gt;
&lt;br /&gt;
:[Cueball leans forward against the new chair position and presses another button.]&lt;br /&gt;
&lt;br /&gt;
:[The chair extends to several times its previous height, very fast as shown by many lines beneath the seat.]&lt;br /&gt;
:Chair: ''Hiss''&lt;br /&gt;
&lt;br /&gt;
:[At the top of this very high seat Cueball leans forward and presses another button.]&lt;br /&gt;
&lt;br /&gt;
:[The seat expands in all directions, so Cueball only sits in the middle of it with his legs on top of the inflated cushion.]&lt;br /&gt;
:Chair: ''Poof''&lt;br /&gt;
&lt;br /&gt;
:[The chair is now a massive contraption. It has 5 bases, each with wheels as the original chair. The mains seat is in the middle of the contraption with a single trunk going up from the five bases connecting them and the large cushion of the seat. Two entire chairs are branching out from underneath this central seat, they are each hanging in a thin wire more or less upside down to each side of the main trunk. Two poles are coming up from the central seat, each with a new seat and two back-to-back seat backs. Yet another seat is supported by a thin rod connecting the two top seats, looking almost like a table between the two chairs. Cueball, is still on the main seats cushion. He is holding on to one of the poles above him as he leans down and attempts to press yet another button beneath the seat. There is a caption in a frame over the tope of the panel:]&lt;br /&gt;
:Two hours later...&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2144:_Adjusting_a_Chair&amp;diff=173516</id>
		<title>2144: Adjusting a Chair</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2144:_Adjusting_a_Chair&amp;diff=173516"/>
				<updated>2019-05-03T17:48:08Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ Add table, sounds&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2144&lt;br /&gt;
| date      = May 1, 2019&lt;br /&gt;
| title     = Adjusting a Chair&lt;br /&gt;
| image     = adjusting_a_chair.png&lt;br /&gt;
| titletext = When I was looking at the box, I should have thought more about what &amp;quot;360 degrees of freedom&amp;quot; meant.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an EDITOR WITH TOO MANY DEGREES OF FREEDOM. Needs review. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic shows [[Cueball]]'s attempts to adjust a swivelling chair. As many people have experienced, these chairs can be quite difficult to raise, lower, or manoeuvre if one does not know how. This comically culminates in a massive chair with a big central seat and several other chairs branching off of it as Cueball continues trying to adjust it.&lt;br /&gt;
&lt;br /&gt;
Each step gets farther away from what real-life office chairs could do. In sequence, Cueball finds his chair:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Number || Sound || Explanation&lt;br /&gt;
|-&lt;br /&gt;
| 1 || Clunk || Being able to recline the seat back. Many chairs do have this ability, which one can use for sitting comfort or perhaps to take a nap.&lt;br /&gt;
|-&lt;br /&gt;
| 2 || Hiss || Being able to raise or lower the seat. Most chairs have this ability, but the comic departs from real chairs in two ways. First, it's much higher than any real chair. Second, he can raise the height while sitting on it; under normal design, pressing the raise/lower lever while sitting on the chair is how one ''lowers'' the seat, using one's own weight to depress the spring or hydraulic piston (which is what's used here, as indicated by the sound). However, it's not uncommon to find a chair that has worn out or been improperly calibrated, so that it does rise even when sat on (especially with lighter people), or does not lower even when not sat upon with the lever active.&lt;br /&gt;
|-&lt;br /&gt;
| 3 || Poof || Being able to have the seat inflate. Although this could be useful (e.g. to help people who need to use extra seat cushions because of hemorrhoids or coccyx injury), it is not a typical office chair capability. However, in addition to simply inflating, Cueball's chair appears to actually make the seat longer and wider. This doesn't seem to have a lot of useful application in office chairs.&lt;br /&gt;
|-&lt;br /&gt;
| 4 || Unknown || Putting out branches and growing extra seats and backs. Chairs definitely cannot do this in real life{{Citation needed}} and use cases are doubtful.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
The title text refers to a common claim on such chairs, that the chair offers 360 degrees rotation and several degrees of freedom. This is a double entendre depending on if &amp;quot;360 degrees&amp;quot; or &amp;quot;degrees of freedom&amp;quot; is interpreted as an object. However, here it means there are 360 {{w|Degrees of freedom (mechanics)|mechanical degrees of freedom}}, which is the number of independent parameters that define the configuration of an object; in other words, the chair has 360 different levers and options, far more than a standard chair{{Citation needed}}.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is shown adjusting a chair by pressing a button on the bottom of the chair. There is a caption in a frame over the tope of the panel:]&lt;br /&gt;
:Adjusting a chair:&lt;br /&gt;
&lt;br /&gt;
:[The seat back of the chair swings backward with him rather fast as shown by a few movement lines.]&lt;br /&gt;
:Chair: ''Clunk''&lt;br /&gt;
&lt;br /&gt;
:[Cueball leans forward against the new chair position and presses another button.]&lt;br /&gt;
&lt;br /&gt;
:[The chair extends to several times its previous height, very fast as shown by many lines beneath the seat.]&lt;br /&gt;
:Chair: ''Hiss''&lt;br /&gt;
&lt;br /&gt;
:[At the top of this very high seat Cueball leans forward and presses another button.]&lt;br /&gt;
&lt;br /&gt;
:[The seat expands in all directions, so Cueball only sits in the middle of it with his legs on top of the inflated cushion.]&lt;br /&gt;
:Chair: ''Poof''&lt;br /&gt;
&lt;br /&gt;
:[The chair is now a massive contraption. It has 5 bases, each with wheels as the original chair. The mains seat is in the middle of the contraption with a single trunk going up from the five bases connecting them and the large cushion of the seat. Two entire chairs are branching out from underneath this central seat, they are each hanging in a thin wire more or less upside down to each side of the main trunk. Two poles are coming up from the central seat, each with a new seat and two back-to-back seat backs. Yet another seat is supported by a thin rod connecting the two top seats, looking almost like a table between the two chairs. Cueball, is still on the main seats cushion. He is holding on to one of the poles above him as he leans down and attempts to press yet another button beneath the seat. There is a caption in a frame over the tope of the panel:]&lt;br /&gt;
:Two hours later...&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2142:_Dangerous_Fields&amp;diff=173236</id>
		<title>2142: Dangerous Fields</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2142:_Dangerous_Fields&amp;diff=173236"/>
				<updated>2019-04-26T23:29:06Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Transcript */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2142&lt;br /&gt;
| date      = April 26, 2019&lt;br /&gt;
| title     = Dangerous Fields&lt;br /&gt;
| image     = dangerous_fields.png&lt;br /&gt;
| titletext = Eventually, every epidemiologist becomes another statistic, a dedication to record-keeping which their colleagues sincerely appreciate.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by an INEXORABLE PROCESS. Percentages needed to be added (like [[1895: Worrying Scientist Interviews]]). Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
This is a line graph of &amp;quot;fields of study by danger&amp;quot;, with mathematics being the least dangerous and gerontology being the most. Gerontology is shown as multiple times more dangerous than the other fields, so it is far on the right side of the graph.&lt;br /&gt;
&lt;br /&gt;
{{W|Mathematics}} is such a pure non-physical field that the probability of it being the direct cause of death is extremely low, barring any workplace disputes.&lt;br /&gt;
&lt;br /&gt;
{{W|Astronomy}} mostly deals with extremely far-away things, so assuming there isn't a meteor impact, astronomy is probably not going to kill you. Astronomy is slightly more dangerous than mathematics though, since it studies physical objects instead of abstract concepts. In addition to meteor or asteroid impacts, astronomical phenomena that might cause death include solar explosion (the likelihood of which will increase over the next few hundred million years), perturbations in earth's orbit, increased or decreased solar radiation, etc.&lt;br /&gt;
&lt;br /&gt;
{{W|Economics}} is the study of markets, which through recessions and scarcity can kill you in any way that capitalism or other economic systems can affect the availability of goods and services you need to survive.&lt;br /&gt;
&lt;br /&gt;
{{W|Law}} in this context refers to the rules people have to follow in society, and given the nature of laws (civil and criminal), the odds that your death is related to law is low. Possible causes of death more-or-less directly related to the study of law would include attacks by someone you are prosecuting or defending.&lt;br /&gt;
&lt;br /&gt;
{{W|Criminology}} is very similar to law, but is the study of crime, meaning it's more dangerous than just &amp;quot;law.&amp;quot; Criminologists may be directly involved with criminals in the course of their studies, increasing their exposure to potentially life-threatening behavior.&lt;br /&gt;
&lt;br /&gt;
{{W|Meteorology}} is the study of weather, and in large weather events such as hurricanes and tornadoes, death is a distinct possibility.&lt;br /&gt;
&lt;br /&gt;
{{W|Chemistry}} is the study of chemicals and reactions of those chemicals. Since everything in existence is made up of chemicals (and chemists often use especially reactive or dangerous chemicals), the likelihood of a chemist's death being caused by chemistry (e.g., explosions, poisoning, chemical burns, suffocation...) is not insignificant.&lt;br /&gt;
&lt;br /&gt;
{{W|Marine Biology}} is the study of marine life. Many marine creatures are venomous, many are very large, many are very hungry. Death could result from exposure to pathogenic bacteria, toxins (such as those produced by cone snails, and &amp;quot;red tide&amp;quot; dinoflagellates), allergies to shellfish, drowning (e.g. in strong ocean currents), scuba accidents, or water pollution, in addition to such perhaps more obvious (but rarer) risks as shark attacks.&lt;br /&gt;
&lt;br /&gt;
{{w|Volcanology}} involves the study of {{w|volcanoes}}, {{w|lava}}, and {{w|magma}}, with obvious risks to the scientists studying them in the field. At least 67 scientists have been killed in volcanic eruptions, as of 2017 (&amp;quot;[https://cosmosmagazine.com/geoscience/volcanologists-lose-their-lives-in-pursuit-of-knowledge Volcanologists lose their lives in pursuit of knowledge]&amp;quot;).&lt;br /&gt;
&lt;br /&gt;
{{w|Gerontology}} involves the study of aging, and of growing old in general. As everyone ages and eventually dies, those who study gerontology are not immune to dying in old age even if they evade all the other possible causes of death - thus making it the most likely among all shown fields. A gerontologist still can die from something else, though.&lt;br /&gt;
&lt;br /&gt;
This comic was posted the day after Joe Biden entered the race for the 2020 U.S. Presidential election, which is shaping up to [https://cbc.ca/1.5107181 feature] the oldest set of candidates in history.&lt;br /&gt;
&lt;br /&gt;
The title text is about {{w|Epidemiology}} or the study of health and disease conditions in populations. In the event of an epidemic, there is a strong chance that epidemiologists in the search for the causation, transmission and treatment will be exposed and become victims of the disease in their own right. However, the title text refers more broadly to the role of epidemiology in maintaining detailed statistical records of diseases and other causes of death, such that eventually and epidemiologist (whatever the cause of death) will become one of his/her own statistics.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
Graph title: Probability that you'll be killed by the thing you study&lt;br /&gt;
&lt;br /&gt;
Graph subtitle: By Field&lt;br /&gt;
&lt;br /&gt;
Graph legend: An arrow pointing from the left, or least likely to be killed, to the right, or most likely to be killed&lt;br /&gt;
&lt;br /&gt;
A line of points with fields from left to right. &lt;br /&gt;
&lt;br /&gt;
1. Mathematics&lt;br /&gt;
&lt;br /&gt;
2. Astronomy&lt;br /&gt;
&lt;br /&gt;
3. Economics&lt;br /&gt;
&lt;br /&gt;
4. Law&lt;br /&gt;
&lt;br /&gt;
5. Criminology&lt;br /&gt;
&lt;br /&gt;
6. Meteorology&lt;br /&gt;
&lt;br /&gt;
7. Chemistry&lt;br /&gt;
&lt;br /&gt;
8. Marine Biology&lt;br /&gt;
&lt;br /&gt;
9. Volcanology&lt;br /&gt;
&lt;br /&gt;
Much farther to the right is:&lt;br /&gt;
&lt;br /&gt;
10. Gerontology&lt;br /&gt;
&lt;br /&gt;
Title Text: Eventually, every epidemiologist becomes another statistic, a dedication to record-keeping which their colleagues sincerely appreciate. &lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:2141:_UI_vs_UX&amp;diff=173183</id>
		<title>Talk:2141: UI vs UX</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:2141:_UI_vs_UX&amp;diff=173183"/>
				<updated>2019-04-26T06:27:31Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: reply&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;
The comic as a whole is making fun of how meta software developers get about the user experience, seeking to name all the different types of interactions a user can have with an app or webpage. &lt;br /&gt;
This comic is massive for me on my desktop (chrome); I wonder if this is a joke about bad UX or if it is a genuine error? [[User:Fwacer|Fwacer]] ([[User talk:Fwacer|talk]]) 18:50, 24 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
:It's not this big on xkcd.com. Did it start this big and got fixed on the original site? Update: replaced with the image from xkcd.com which was much smaller. [[User:Cgrimes85|Cgrimes85]] ([[User talk:Cgrimes85|talk]]) 18:55, 24 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
::Looks like it is fixed now, but yes it was also that big on xkcd.com initially. [[User:Fwacer|Fwacer]] ([[User talk:Fwacer|talk]]) 19:19, 24 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
To me, it comes across as a hyperbolic play on the common confusion between the meaning of UI and UX. [https://twitter.com/sdw/status/709853249407361024] [[User:Ahiijny|Ahiijny]] ([[User talk:Ahiijny|talk]]) 19:06, 24 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
It makes sense that it would be alpha and omega, but I originally thought it was the &amp;quot;proportional&amp;quot; symbol. I only ask because alpha is lowercase and omega is uppercase, although perhaps this was to avoid confusion with the Latin &amp;quot;A&amp;quot;. [[User:Cgrimes85|Cgrimes85]] ([[User talk:Cgrimes85|talk]]) 19:13, 24 April 2019 (UTC)&lt;br /&gt;
:Concerning the lowercase/uppercase difference, since alpha is the beginning and omega is the end, then consider that in the beginning we are born little and then grow up - we start out as lowercase and end up as uppercase. [[User:Ianrbibtitlht|Ianrbibtitlht]] ([[User talk:Ianrbibtitlht|talk]]) 19:30, 24 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
This is a joke on integration, yes?[[Special:Contributions/172.69.68.129|172.69.68.129]] 19:33, 24 April 2019 (UTC)&lt;br /&gt;
: &amp;quot;The arc of the moral universe is long, but it bends toward justice&amp;quot; -- I guess the big in the comic being about the arc of the moral universe can reference the fight against segregation and thus for integration...&lt;br /&gt;
:: I meant mathematical integration...&lt;br /&gt;
&lt;br /&gt;
I'm happy with the explanations I just added for everything but &amp;quot;Life's experience of time&amp;quot; -- does anyone know what that phrase is from? [[Special:Contributions/172.68.133.54|172.68.133.54]] 05:48, 25 April 2019 (UTC)&lt;br /&gt;
:I thought it was made by a U[unprintable glyph] designer. [[Special:Contributions/172.68.226.64|172.68.226.64]] 07:40, 25 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
No UK - well that is about par [[Special:Contributions/141.101.107.240|141.101.107.240]] 20:45, 25 April 2019 (UTC)&lt;br /&gt;
&lt;br /&gt;
On what level are those idiots who say &amp;quot;user doesn't need this setting, it would only confuse him&amp;quot;? -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 22:20, 25 April 2019 (UTC)&lt;br /&gt;
:UG&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; - user second-guessing. [[Special:Contributions/172.68.142.197|172.68.142.197]] 06:27, 26 April 2019 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2141:_UI_vs_UX&amp;diff=173182</id>
		<title>2141: UI vs UX</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2141:_UI_vs_UX&amp;diff=173182"/>
				<updated>2019-04-26T06:23:52Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ better wording&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2141&lt;br /&gt;
| date      = April 24, 2019&lt;br /&gt;
| title     = UI vs UX&lt;br /&gt;
| image     = ui_vs_ux.png&lt;br /&gt;
| titletext = U[unprintable glyph]: The elements a higher power uses to bend that moral arc. U[even more unprintable glyph]: The higher power's overall experience bending that moral arc.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a UX DESIGNER. Each U{x} needs its own section, including the two from the title text. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[https://www.google.com/search?q=UI+vs+UX UI vs UX] is a discussion in software engineering of the differences between {{w|User_interface_design|user interface}} design (UI) and {{w|user experience}} design (UX). As explained in the comic, UI design is typically concerned with the elements of the interface that a user encounters, while UX design is more concerned about the user's overall experience in using such interface. UX design can be seen as more holistic &amp;amp; abstract than UI. This comic extends the idea, adding increasingly all-encompassing, abstract &amp;amp; fanciful design perspectives&lt;br /&gt;
&lt;br /&gt;
*UI - '''Elements of the interface that the user encounters'''&lt;br /&gt;
This standard software engineering practice involves trying to come up with a user interface - icons, colors, placement or text and elements, etc. that works well together, that isn't confusing, and that hopefully makes it easy for the user to view the information they need to digest, as well as make whatever choices the user is expected to make.  They also look at things like how long it takes to move from one screen or task to another, etc.&lt;br /&gt;
&lt;br /&gt;
*UX - '''The user's experience of using the interface to achieve goals'''&lt;br /&gt;
Sometimes a UI designer makes choices that they think are easy for the user, but it turns out not to be as easy as expected when it comes to real users and practical situations. So the UX designer focuses on observing how a user uses a product, both how they use the user interface as well as other less technical aspects of their experience such as how they come to find out about the product, what they tell others about the product, etc.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The comic takes this to absurd levels by adding these additional categories:&lt;br /&gt;
&lt;br /&gt;
*UZ - '''The psychological roots of the user's motivation for seeking out the interaction'''&lt;br /&gt;
The comic says that UZ is the investigation of the psychological roots of why the user even wants to use the interface. This is not normally something that computer programmers do{{Citation needed}}, and is usually best left in the hands of psychologists {{Citation needed}}.&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The psychological roots of motivation&amp;quot; is a [http://playbook.amanet.org/brian-tracy-the-root-of-motivation/ buzzword phrase] from [http://www.maccoby.com/books/WhyWork.php management theory] which may not have a particularly well-defined meaning. {{w|Motivation}} is itself the psychological root of behavior. While motivations certainly have causes, they are usually not clear enough to meaningfully treat in formal or clinical contexts.&lt;br /&gt;
&lt;br /&gt;
*U∝ - '''The user's self-actualization'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;{{w|Self actualization}}&amp;quot; is the most abstract, immaterial form of motivation, meaning the need to find comfort in one's own goals and achievements. Available only when more material needs such as those for food, shelter, warmth, security, and a sense of belonging are met, it forms the pinnacle of {{w|Maslow's hierarchy of needs}}. &lt;br /&gt;
&lt;br /&gt;
*UΩ - '''The arc of the user's life'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The arc of one's life,&amp;quot; means the overall thematic elements present in a person's existence. It occurs in the philosophical humor novel ''{{w|The World According to Garp}},'' which remarks on how easily the arc of any human life can turn on a single sexual relationship. &lt;br /&gt;
&lt;br /&gt;
*U∞ - '''Life's experience of time'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Life's experience of time&amp;quot; is a very rare phrase which does not seem to have a coherent meaning across the handful of times it occurs.&lt;br /&gt;
&lt;br /&gt;
*U⬤ - '''The arc of the moral universe'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The arc of the moral universe is long, but it bends toward justice,&amp;quot; is a famous line from a speech by {{w|Martin Luther King}}, referring to the slow pace at which social progress is often achieved, and paraphrasing parts of a 1853 sermon by abolitionist minister {{w|Theodore Parker}}: &amp;quot;I do not pretend to understand the moral universe. The arc is a long one. My eye reaches but little ways. I cannot calculate the curve and complete the figure by experience of sight. I can divine it by conscience. And from what I see I am sure it bends toward justice.&amp;quot; President Obama had the sentence from King's speech woven into a rug in the Oval Office.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The title text refers to a higher power bending the moral arc, but mirrors the UI and UX categories, with the implication that the list continues in a spiral through ever more rarefied levels of higher powers. &lt;br /&gt;
&lt;br /&gt;
*U[unprintable glyph] - '''The elements a higher power uses to bend that moral arc'''&lt;br /&gt;
&lt;br /&gt;
Essentially UI for the higher power's moral arc bending utility&lt;br /&gt;
&lt;br /&gt;
*U[even more unprintable glyph] - '''The higher power's overall experience bending that moral arc'''&lt;br /&gt;
&lt;br /&gt;
Essentially UX for the higher power's moral arc bending utility&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Two underlined headings are above two columns of text with seven lines. The left &amp;quot;symbol&amp;quot; is explained by the text to the right.]&lt;br /&gt;
:&amp;lt;u&amp;gt;Designer&amp;lt;/u&amp;gt; &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp; &amp;lt;u&amp;gt;What they are responsible for&amp;lt;/u&amp;gt;&lt;br /&gt;
:'''UI''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    Elements of the interface that the user encounters&lt;br /&gt;
:'''UX''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The user's experience of using the interface to achieve goals&lt;br /&gt;
:'''UZ''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The psychological roots of the user's motivation for seeking out the interaction&lt;br /&gt;
:'''U∝''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The user's self-actualization&lt;br /&gt;
:'''UΩ''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The arc of the user's life&lt;br /&gt;
:'''U∞''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    Life's experience of time&lt;br /&gt;
:'''U'''&amp;lt;small&amp;gt;⚫&amp;lt;/small&amp;gt; &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The arc of the moral universe&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Programming]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2141:_UI_vs_UX&amp;diff=173179</id>
		<title>2141: UI vs UX</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2141:_UI_vs_UX&amp;diff=173179"/>
				<updated>2019-04-26T01:34:49Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2141&lt;br /&gt;
| date      = April 24, 2019&lt;br /&gt;
| title     = UI vs UX&lt;br /&gt;
| image     = ui_vs_ux.png&lt;br /&gt;
| titletext = U[unprintable glyph]: The elements a higher power uses to bend that moral arc. U[even more unprintable glyph]: The higher power's overall experience bending that moral arc.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a UX DESIGNER. Each U{x} needs its own section, including the two from the title text. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[https://www.google.com/search?q=UI+vs+UX UI vs UX] is a discussion in software engineering of the differences between {{w|User_interface_design|user interface}} design (UI) and {{w|user experience}} design (UX). As explained in the comic, UI design is typically concerned with the elements of the interface that a user encounters, while UX design is more concerned about the user's overall experience in using such interface. UX design can be seen as more holistic &amp;amp; abstract than UI. This comic extends this idea, adding increasingly all-encompassing, abstract &amp;amp; fanciful design perspectives&lt;br /&gt;
&lt;br /&gt;
*UI - '''Elements of the interface that the user encounters'''&lt;br /&gt;
This standard software engineering practice involves trying to come up with a user interface - icons, colors, placement or text and elements, etc. that works well together, that isn't confusing, and that hopefully makes it easy for the user to view the information they need to digest, as well as make whatever choices the user is expected to make.  They also look at things like how long it takes to move from one screen or task to another, etc.&lt;br /&gt;
&lt;br /&gt;
*UX - '''The user's experience of using the interface to achieve goals'''&lt;br /&gt;
Sometimes a UI designer makes choices that they think are easy for the user, but it turns out not to be as easy as expected when it comes to real users and practical situations. So the UX designer focuses on observing how a user uses a product, both how they use the user interface as well as other less technical aspects of their experience such as how they come to find out about the product, what they tell others about the product, etc.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The comic takes this to absurd levels by adding these additional categories:&lt;br /&gt;
&lt;br /&gt;
*UZ - '''The psychological roots of the user's motivation for seeking out the interaction'''&lt;br /&gt;
The comic says that UZ is the investigation of the psychological roots of why the user even wants to use the interface. This is not normally something that computer programmers do{{Citation needed}}, and is usually best left in the hands of psychologists {{Citation needed}}.&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The psychological roots of motivation&amp;quot; is a [http://playbook.amanet.org/brian-tracy-the-root-of-motivation/ buzzword phrase] from [http://www.maccoby.com/books/WhyWork.php management theory] which may not have a particularly well-defined meaning. {{w|Motivation}} is itself the psychological root of behavior. While motivations certainly have causes, they are usually not clear enough to meaningfully treat in formal or clinical contexts.&lt;br /&gt;
&lt;br /&gt;
*U∝ - '''The user's self-actualization'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;{{w|Self actualization}}&amp;quot; is the most abstract, immaterial form of motivation, meaning the need to find comfort in one's own goals and achievements. Available only when more material needs such as those for food, shelter, warmth, security, and a sense of belonging are met, it forms the pinnacle of {{w|Maslow's hierarchy of needs}}. &lt;br /&gt;
&lt;br /&gt;
*UΩ - '''The arc of the user's life'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The arc of one's life,&amp;quot; means the overall thematic elements present in a person's entire existence, and is used as such in philosophical humor novels such as ''{{w|The World According to Garp}},'' which remarks on how easily the arc of any human life can turn on a single sexual relationship. &lt;br /&gt;
&lt;br /&gt;
*U∞ - '''Life's experience of time'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Life's experience of time&amp;quot; is a very rare phrase which does not seem to have a coherent meaning across the handful of times it occurs.&lt;br /&gt;
&lt;br /&gt;
*U⬤ - '''The arc of the moral universe'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The arc of the moral universe is long, but it bends toward justice,&amp;quot; is a famous line from a speech by {{w|Martin Luther King}}, referring to the slow pace at which social progress is often achieved, and paraphrasing parts of a 1853 sermon by abolitionist minister {{w|Theodore Parker}}: &amp;quot;I do not pretend to understand the moral universe. The arc is a long one. My eye reaches but little ways. I cannot calculate the curve and complete the figure by experience of sight. I can divine it by conscience. And from what I see I am sure it bends toward justice.&amp;quot; President Obama had the sentence from King's speech woven into a rug in the Oval Office.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The title text refers to a higher power bending the moral arc, but mirrors the UI and UX categories, with the implication that the list continues in a spiral through ever more rarefied levels of higher powers. &lt;br /&gt;
&lt;br /&gt;
*U[unprintable glyph] - '''The elements a higher power uses to bend that moral arc'''&lt;br /&gt;
&lt;br /&gt;
Essentially UI for the higher power's moral arc bending utility&lt;br /&gt;
&lt;br /&gt;
*U[even more unprintable glyph] - '''The higher power's overall experience bending that moral arc'''&lt;br /&gt;
&lt;br /&gt;
Essentially UX for the higher power's moral arc bending utility&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Two underlined headings are above two columns of text with seven lines. The left &amp;quot;symbol&amp;quot; is explained by the text to the right.]&lt;br /&gt;
:&amp;lt;u&amp;gt;Designer&amp;lt;/u&amp;gt; &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp; &amp;lt;u&amp;gt;What they are responsible for&amp;lt;/u&amp;gt;&lt;br /&gt;
:'''UI''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    Elements of the interface that the user encounters&lt;br /&gt;
:'''UX''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The user's experience of using the interface to achieve goals&lt;br /&gt;
:'''UZ''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The psychological roots of the user's motivation for seeking out the interaction&lt;br /&gt;
:'''U∝''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The user's self-actualization&lt;br /&gt;
:'''UΩ''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The arc of the user's life&lt;br /&gt;
:'''U∞''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    Life's experience of time&lt;br /&gt;
:'''U'''&amp;lt;small&amp;gt;⚫&amp;lt;/small&amp;gt; &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The arc of the moral universe&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Programming]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2141:_UI_vs_UX&amp;diff=173167</id>
		<title>2141: UI vs UX</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2141:_UI_vs_UX&amp;diff=173167"/>
				<updated>2019-04-25T15:35:52Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ social progress&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2141&lt;br /&gt;
| date      = April 24, 2019&lt;br /&gt;
| title     = UI vs UX&lt;br /&gt;
| image     = ui_vs_ux.png&lt;br /&gt;
| titletext = U[unprintable glyph]: The elements a higher power uses to bend that moral arc. U[even more unprintable glyph]: The higher power's overall experience bending that moral arc.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a UX DESIGNER. Each U{x} needs its own section, including the two from the title text. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[https://www.google.com/search?q=UI+vs+UX UI vs UX] is a discussion in software engineering of the differences between {{w|User_interface_design|user interface}} design (UI) and {{w|user experience}} design (UX). As explained in the comic, UI design is typically concerned with the elements of the interface that a user encounters, while UX design is more concerned about the user's overall experience in using such interface.&lt;br /&gt;
&lt;br /&gt;
*UI - '''Elements of the interface that the user encounters'''&lt;br /&gt;
This standard software engineering practice involves trying to come up with a user interface - icons, colors, placement or text and elements, etc. that works well together, that isn't confusing, and that hopefully makes it easy for the user to view the information they need to digest, as well as make whatever choices the user is expected to make.  They also look at things like how long it takes to move from one screen or task to another, etc.&lt;br /&gt;
&lt;br /&gt;
*UX - '''The user's experience of using the interface to achieve goals'''&lt;br /&gt;
Sometimes a UI designer makes choices that they think are easy for the user, but it turns out not to be as easy as expected when it comes to real users and practical situations. So the UX designer focuses on observing how a user uses a product, both how they use the user interface as well as other less technical aspects of their experience such as how they come to find out about the product, what they tell others about the product, etc.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The comic takes this to absurd levels by adding these additional categories:&lt;br /&gt;
&lt;br /&gt;
*UZ - '''The psychological roots of the user's motivation for seeking out the interaction'''&lt;br /&gt;
The comic says that UZ is the investigation of the psychological roots of why the user even wants to use the interface. This is not normally something that computer programmers do{{Citation needed}}, and is usually best left in the hands of psychologists {{Citation needed}}.&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The psychological roots of motivation&amp;quot; is a [http://playbook.amanet.org/brian-tracy-the-root-of-motivation/ buzzword phrase] from [http://www.maccoby.com/books/WhyWork.php management theory] which may not have a particularly well-defined meaning. {{w|Motivation}} is itself the psychological root of behavior. While motivations certainly have causes, they are usually not clear enough to meaningfully treat in formal or clinical contexts.&lt;br /&gt;
&lt;br /&gt;
*U∝ - '''The user's self-actualization'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;{{w|Self actualization}}&amp;quot; is the most abstract, immaterial form of motivation, meaning the need to find comfort in one's own goals and achievements. Available only when more material needs such as those for food, shelter, warmth, security, and a sense of belonging are met, it forms the pinnacle of {{w|Maslow's hierarchy of needs}}. &lt;br /&gt;
&lt;br /&gt;
*UΩ - '''The arc of the user's life'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The arc of one's life,&amp;quot; means the overall thematic elements present in a person's entire existence, and is used as such in philosophical humor novels such as ''{{w|The World According to Garp}},'' which remarks on how easily the arc of any human life can turn on a single sexual relationship. &lt;br /&gt;
&lt;br /&gt;
*U∞ - '''Life's experience of time'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Life's experience of time&amp;quot; is a very rare phrase which does not seem to have a coherent meaning across the handful of times it occurs.&lt;br /&gt;
&lt;br /&gt;
*U⬤ - '''The arc of the moral universe'''&lt;br /&gt;
&lt;br /&gt;
&amp;quot;The arc of the moral universe is long, but it bends toward justice,&amp;quot; is a famous line from a speech by {{w|Martin Luther King}}, referring to the slow pace at which social progress is often achieved, and paraphrasing parts of a 1853 sermon by abolitionist minister {{w|Theodore Parker}}: &amp;quot;I do not pretend to understand the moral universe. The arc is a long one. My eye reaches but little ways. I cannot calculate the curve and complete the figure by experience of sight. I can divine it by conscience. And from what I see I am sure it bends toward justice.&amp;quot; President Obama had the sentence from King's speech woven into a rug in the Oval Office.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
The title text refers to a higher power bending the moral arc, but mirrors the UI and UX categories, with the implication that the list continues in a spiral through ever more rarefied levels of higher powers. &lt;br /&gt;
&lt;br /&gt;
*U[unprintable glyph] - '''The elements a higher power uses to bend that moral arc'''&lt;br /&gt;
&lt;br /&gt;
Essentially UI for the higher power's moral arc bending utility&lt;br /&gt;
&lt;br /&gt;
*U[even more unprintable glyph] - '''The higher power's overall experience bending that moral arc'''&lt;br /&gt;
&lt;br /&gt;
Essentially UX for the higher power's moral arc bending utility&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Two underlined headings are above two columns of text with seven lines. The left &amp;quot;symbol&amp;quot; is explained by the text to the right.]&lt;br /&gt;
:&amp;lt;u&amp;gt;Designer&amp;lt;/u&amp;gt; &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp; &amp;lt;u&amp;gt;What they are responsible for&amp;lt;/u&amp;gt;&lt;br /&gt;
:'''UI''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    Elements of the interface that the user encounters&lt;br /&gt;
:'''UX''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The user's experience of using the interface to achieve goals&lt;br /&gt;
:'''UZ''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The psychological roots of the user's motivation for seeking out the interaction&lt;br /&gt;
:'''U∝''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The user's self-actualization&lt;br /&gt;
:'''UΩ''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The arc of the user's life&lt;br /&gt;
:'''U∞''' &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    Life's experience of time&lt;br /&gt;
:'''U'''&amp;lt;small&amp;gt;⚫&amp;lt;/small&amp;gt; &amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;&amp;amp;nbsp;    The arc of the moral universe&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Programming]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2139:_Email_Settings&amp;diff=172886</id>
		<title>2139: Email Settings</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2139:_Email_Settings&amp;diff=172886"/>
				<updated>2019-04-19T14:18:35Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ Sun&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2139&lt;br /&gt;
| date      = April 19, 2019&lt;br /&gt;
| title     = Email Settings&lt;br /&gt;
| image     = email_settings.png&lt;br /&gt;
| titletext = What are all these less-than signs? What's an HREF? Look, we know you live in a fancy futuristic tech world, but not all of us have upgraded to the latest from Sun Microsystems.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by someone who can't use e-mail. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
The comic shows some email settings with a few less than helpful options.&lt;br /&gt;
&lt;br /&gt;
'''Default Reply Behavior:''' Normal reply behavior would be to reply to the person who sent the original email. Reply all is a potentially annoying option to send your reply to all other recipients of the original email. Forward to address book takes this one step further by sending your reply to every person who is in your address book, whether they received the original email or not.&lt;br /&gt;
&lt;br /&gt;
'''Vacation Autoresponder:''' This is a message that is automatically sent out in reply to an email to let them know that you are away and won't be replying until you return. While on vacation is the usual behavior, but since email systems typically have no way of knowing that you're on vacation other than this setting itself, it won't be able to comply Always is a less useful option.&lt;br /&gt;
&lt;br /&gt;
'''Reply to all newsletters with &amp;quot;thank you for the newsletter!&amp;quot;:''' This option is completely unnecessary, in that newsletters are usually automated and shotgunned out to thousand of addresses at once, often with a do-not-reply from address. &lt;br /&gt;
&lt;br /&gt;
'''Attachment limit:''' These attachment limits are all pretty small, with 300 kilobytes being fairly useless for anything, 1.4 megabytes being the size of an old floppy disk, and 5 megabytes, while better, is smaller than most high resolution cell phone camera pictures. It being in beta means that it might not be as dependable. However, setting the maximum attachment size would likely not be a user setting; it would be a setting the email system enforces on the user. There would be no purpose in having the user set this themselves.&lt;br /&gt;
&lt;br /&gt;
'''Default email format:''' plain text is self explanatory; plain text with no special formatting options. HTML means that it can have markup to allow for bold text, colors, etc. CSS is in reference to cascading style sheets, which is a styling option often combined with HTML, but useless on it's own.&lt;br /&gt;
&lt;br /&gt;
'''Reply to HTML emails with &amp;quot;Whoa, buddy, what's all this code?&amp;quot;:''' HTML email is a format for sending email with rich-text contents, which may include images and links. If your email client isn't configured for HTML, the content may look like text interspersed with a bunch of weird code. Since HTML email is a common format, replying this way to every HTML email you receive can be an effective way to annoy people. This may be a &amp;quot;throwback&amp;quot; option: a few years ago, email systems didn't always recognize HTML emails, so if you sent an HTML email you might very well receive this kind of reply.&lt;br /&gt;
&lt;br /&gt;
'''Character set:''' ASCII is the character group containing all of the letters in the English alphabet, as well as the digits and common symbols. The Non-ASCII set contains all of the non-English alphabets and the rest of they (lesser used) symbols.  Lacking the ASCII characters however, would make the second option useless for most European languages.&lt;br /&gt;
&lt;br /&gt;
'''Smart autocomplete:''' Some email platforms, including Gmail, have the ability to use machine learning to suggest possible, usually short reply options for you to choose from. If the original email asks if you want to go to dinner, the auto-complete replies might be, &amp;quot;Yes&amp;quot;, &amp;quot;No&amp;quot;, &amp;quot;How about Friday?&amp;quot; and then you could choose one, or type your own reply. The third option to automatically respond to all emails with suggested reply is putting a lot of faith in the computer, and is likely to backfire quickly.&lt;br /&gt;
&lt;br /&gt;
'''Important emails:''' Showing important emails is the expected behavior, and hiding them would be a very strange thing to want to do.&lt;br /&gt;
&lt;br /&gt;
'''Show unread email count...:''' Seeing your unread email count is normal behavior, and a good way to see what a failure you are at reading your email. A projected unread email count based on when the system expects you to die, and how well you do at reading your email on a day to day basis is probably going to be depressing.&lt;br /&gt;
&lt;br /&gt;
'''Signature:''' A signature is a bit of canned text that gets added to the end of an email, often containing your name, and sometimes a bit of other information like a title and other contact information. Having the choices being None and &amp;quot;That's my email. Hope you liked it!&amp;quot; is less useful.&lt;br /&gt;
&lt;br /&gt;
The title text also references HTML email, in which greater than and less than symbols are used to show the opening and closing tags of elements. &amp;quot;href&amp;quot; is a common attribute in HTML elements denoting the location a hyperlink will take you to upon being clicked. This is likely another &amp;quot;throwback&amp;quot; reference, Sun Microsystems being a former maker of Unix workstations popular in the late 1990s and 2000s (now part of Oracle Corporation).&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
:EMAIL SETTINGS&lt;br /&gt;
:[A list of controls with radio buttons and checkboxes]&lt;br /&gt;
:Default reply behavior&lt;br /&gt;
::( ) Reply&lt;br /&gt;
::( ) Reply All&lt;br /&gt;
::(*) Forward to address book&lt;br /&gt;
&lt;br /&gt;
:Vacation autoresponder&lt;br /&gt;
::(*) While on vacation&lt;br /&gt;
::( ) Always&lt;br /&gt;
&lt;br /&gt;
:[x]Reply to all newsletters with &amp;quot;Thank you for the newsletter!&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:Attachment limit&lt;br /&gt;
::( ) 300 KB&lt;br /&gt;
::(*) 1.4 MB&lt;br /&gt;
::( ) 5 MB (Beta)&lt;br /&gt;
&lt;br /&gt;
:Default email format&lt;br /&gt;
::(*) Plain text&lt;br /&gt;
::( ) HTML&lt;br /&gt;
::( ) CSS&lt;br /&gt;
&lt;br /&gt;
:[x]Reply to HTML emails with &amp;quot;Whoa, buddy, what's all this code?&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:Character set&lt;br /&gt;
::( ) ASCII (Unicode 0-127 only)&lt;br /&gt;
::(*) Non-ASCII (Unicode 128+ only)&lt;br /&gt;
&lt;br /&gt;
:Smart autocomplete&lt;br /&gt;
::( ) Do not suggest replies&lt;br /&gt;
::( ) Suggest replies&lt;br /&gt;
::(*) Automatically respond to all emails with suggested reply&lt;br /&gt;
&lt;br /&gt;
:Important emails&lt;br /&gt;
::(*) Show&lt;br /&gt;
::( ) Hide&lt;br /&gt;
&lt;br /&gt;
:Show unread email count...&lt;br /&gt;
::(*) Now&lt;br /&gt;
::( ) On my projected day of death&lt;br /&gt;
&lt;br /&gt;
:Signature&lt;br /&gt;
::(*) &amp;quot;That's my email. Hope you liked it!&amp;quot;&lt;br /&gt;
::( ) None&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2139:_Email_Settings&amp;diff=172885</id>
		<title>2139: Email Settings</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2139:_Email_Settings&amp;diff=172885"/>
				<updated>2019-04-19T14:16:32Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ Autorespond, attachment limit, HTML&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2139&lt;br /&gt;
| date      = April 19, 2019&lt;br /&gt;
| title     = Email Settings&lt;br /&gt;
| image     = email_settings.png&lt;br /&gt;
| titletext = What are all these less-than signs? What's an HREF? Look, we know you live in a fancy futuristic tech world, but not all of us have upgraded to the latest from Sun Microsystems.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by someone who can't use e-mail. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
The comic shows some email settings with a few less than helpful options.&lt;br /&gt;
&lt;br /&gt;
'''Default Reply Behavior:''' Normal reply behavior would be to reply to the person who sent the original email. Reply all is a potentially annoying option to send your reply to all other recipients of the original email. Forward to address book takes this one step further by sending your reply to every person who is in your address book, whether they received the original email or not.&lt;br /&gt;
&lt;br /&gt;
'''Vacation Autoresponder:''' This is a message that is automatically sent out in reply to an email to let them know that you are away and won't be replying until you return. While on vacation is the usual behavior, but since email systems typically have no way of knowing that you're on vacation other than this setting itself, it won't be able to comply Always is a less useful option.&lt;br /&gt;
&lt;br /&gt;
'''Reply to all newsletters with &amp;quot;thank you for the newsletter!&amp;quot;:''' This option is completely unnecessary, in that newsletters are usually automated and shotgunned out to thousand of addresses at once, often with a do-not-reply from address. &lt;br /&gt;
&lt;br /&gt;
'''Attachment limit:''' These attachment limits are all pretty small, with 300 kilobytes being fairly useless for anything, 1.4 megabytes being the size of an old floppy disk, and 5 megabytes, while better, is smaller than most high resolution cell phone camera pictures. It being in beta means that it might not be as dependable. However, setting the maximum attachment size would likely not be a user setting; it would be a setting the email system enforces on the user. There would be no purpose in having the user set this themselves.&lt;br /&gt;
&lt;br /&gt;
'''Default email format:''' plain text is self explanatory; plain text with no special formatting options. HTML means that it can have markup to allow for bold text, colors, etc. CSS is in reference to cascading style sheets, which is a styling option often combined with HTML, but useless on it's own.&lt;br /&gt;
&lt;br /&gt;
'''Reply to HTML emails with &amp;quot;Whoa, buddy, what's all this code?&amp;quot;:''' HTML email is a format for sending email with rich-text contents, which may include images and links. If your email client isn't configured for HTML, the content may look like text interspersed with a bunch of weird code. Since HTML email is a common format, replying this way to every HTML email you receive can be an effective way to annoy people. This may be a &amp;quot;throwback&amp;quot; option: a few years ago, email systems didn't always recognize HTML emails, so if you sent an HTML email you might very well receive this kind of reply.&lt;br /&gt;
&lt;br /&gt;
'''Character set:''' ASCII is the character group containing all of the letters in the English alphabet, as well as the digits and common symbols. The Non-ASCII set contains all of the non-English alphabets and the rest of they (lesser used) symbols.  Lacking the ASCII characters however, would make the second option useless for most European languages.&lt;br /&gt;
&lt;br /&gt;
'''Smart autocomplete:''' Some email platforms, including Gmail, have the ability to use machine learning to suggest possible, usually short reply options for you to choose from. If the original email asks if you want to go to dinner, the auto-complete replies might be, &amp;quot;Yes&amp;quot;, &amp;quot;No&amp;quot;, &amp;quot;How about Friday?&amp;quot; and then you could choose one, or type your own reply. The third option to automatically respond to all emails with suggested reply is putting a lot of faith in the computer, and is likely to backfire quickly.&lt;br /&gt;
&lt;br /&gt;
'''Important emails:''' Showing important emails is the expected behavior, and hiding them would be a very strange thing to want to do.&lt;br /&gt;
&lt;br /&gt;
'''Show unread email count...:''' Seeing your unread email count is normal behavior, and a good way to see what a failure you are at reading your email. A projected unread email count based on when the system expects you to die, and how well you do at reading your email on a day to day basis is probably going to be depressing.&lt;br /&gt;
&lt;br /&gt;
'''Signature:''' A signature is a bit of canned text that gets added to the end of an email, often containing your name, and sometimes a bit of other information like a title and other contact information. Having the choices being None and &amp;quot;That's my email. Hope you liked it!&amp;quot; is less useful.&lt;br /&gt;
&lt;br /&gt;
The title text also references HTML email, in which greater than and less than symbols are used to show the opening and closing tags of elements. &amp;quot;href&amp;quot; is a common attribute in HTML elements denoting the location a hyperlink will take you to upon being clicked.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
:EMAIL SETTINGS&lt;br /&gt;
:[A list of controls with radio buttons and checkboxes]&lt;br /&gt;
:Default reply behavior&lt;br /&gt;
::( ) Reply&lt;br /&gt;
::( ) Reply All&lt;br /&gt;
::(*) Forward to address book&lt;br /&gt;
&lt;br /&gt;
:Vacation autoresponder&lt;br /&gt;
::(*) While on vacation&lt;br /&gt;
::( ) Always&lt;br /&gt;
&lt;br /&gt;
:[x]Reply to all newsletters with &amp;quot;Thank you for the newsletter!&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:Attachment limit&lt;br /&gt;
::( ) 300 KB&lt;br /&gt;
::(*) 1.4 MB&lt;br /&gt;
::( ) 5 MB (Beta)&lt;br /&gt;
&lt;br /&gt;
:Default email format&lt;br /&gt;
::(*) Plain text&lt;br /&gt;
::( ) HTML&lt;br /&gt;
::( ) CSS&lt;br /&gt;
&lt;br /&gt;
:[x]Reply to HTML emails with &amp;quot;Whoa, buddy, what's all this code?&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:Character set&lt;br /&gt;
::( ) ASCII (Unicode 0-127 only)&lt;br /&gt;
::(*) Non-ASCII (Unicode 128+ only)&lt;br /&gt;
&lt;br /&gt;
:Smart autocomplete&lt;br /&gt;
::( ) Do not suggest replies&lt;br /&gt;
::( ) Suggest replies&lt;br /&gt;
::(*) Automatically respond to all emails with suggested reply&lt;br /&gt;
&lt;br /&gt;
:Important emails&lt;br /&gt;
::(*) Show&lt;br /&gt;
::( ) Hide&lt;br /&gt;
&lt;br /&gt;
:Show unread email count...&lt;br /&gt;
::(*) Now&lt;br /&gt;
::( ) On my projected day of death&lt;br /&gt;
&lt;br /&gt;
:Signature&lt;br /&gt;
::(*) &amp;quot;That's my email. Hope you liked it!&amp;quot;&lt;br /&gt;
::( ) None&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1871:_Bun_Alert&amp;diff=157496</id>
		<title>1871: Bun Alert</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1871:_Bun_Alert&amp;diff=157496"/>
				<updated>2018-05-23T18:56:20Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Trivia */ Add trivia around the real-world Bun Alert project.&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1871&lt;br /&gt;
| date      = August 2, 2017&lt;br /&gt;
| title     = Bun Alert&lt;br /&gt;
| image     = bun_alert.png&lt;br /&gt;
| titletext = Since buns range from crepuscular to nocturnal, it's recommended that you enable the scheduled &amp;quot;Do Not Disturb&amp;quot; mode on your phone to avoid being woken by alerts about Night Buns.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
The comic opens with [[Beret Guy]] identifying a &amp;quot;bun&amp;quot;, an informal term for a {{w|rabbit}} also used in [[1682: Bun]]. The title text of that former comic specifically refers of sending out a &amp;quot;BUN ALERT&amp;quot; to friends and family with location and photographic evidence of the bun, so in this comic that concept appears to have been elevated from a simple mass SMS/MMS message to a standalone application.&lt;br /&gt;
&lt;br /&gt;
Upon seeing the bun, Beret Guy uses his phone to send an alert about the &amp;quot;Bun&amp;quot; with a [[wikipedia:Push technology|push notification]]. He is still looking for investors, though such an app would likely not appeal to a wide market. In response to [[Ponytail]]'s confusion, he explains that bunnies are &amp;quot;like loaves of bread that hop&amp;quot; perhaps making a pun by comparing rabbits to bread, as &amp;quot;bun&amp;quot; can commonly refer to a small loaf of bread. Beret Guy is known to be fascinated with bakeries, as shown in the comics [[434: xkcd Goes to the Airport]], [[442: xkcd Loves the Discovery Channel ]], or [[452: Mission]], so it makes sense that this sort of comparison occurs to him. It is known that the word &amp;quot;bun&amp;quot; is similar to the word &amp;quot;pun&amp;quot;. Beret Guy has a history of misinterpreting statements and phrases (and often making said misinterpretations correct through some strange power of his), so it is not implausible that he actually genuinely thinks that these &amp;quot;buns&amp;quot; are bread products that somehow behave exactly like rabbits.&lt;br /&gt;
&lt;br /&gt;
As Ponytail leaves, apparently to remove herself from the situation, [[Megan]] hurriedly approaches, excited to see the &amp;quot;bun&amp;quot;. This serves as a punchline as despite Ponytail appearing to be the voice of reason, it seems that Beret Guy's inane bun alert system has gathered a dedicated following after all.&lt;br /&gt;
&lt;br /&gt;
Megan's question &amp;quot;Is it small?&amp;quot; and her amazement when she find out that it is parallels the idea in [[1682: Bun]] where the bun's size is said to be inversely correlated with its status; smaller buns such as the one in this comic are thought of as higher-ranking &amp;quot;king buns&amp;quot; by the characters in both strips. In real life, smaller rabbits are more likely to simply be young. It is also possible that she simply thinks smaller buns are cuter, which might have been the motivation for the whole bun-ranking system thing in the first place.&lt;br /&gt;
&lt;br /&gt;
The title text refers to buns being {{w|crepuscular}} and {{w|nocturnal}} animals, meaning they are primarily active at twilight and night, respectively. This means that someone with the app would get a lot of notifications while they would most likely be asleep.&lt;br /&gt;
&lt;br /&gt;
The bun alert reappears in [[1903: Bun Trend]], where Beret Guy receives the alert.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Beret Guy and Ponytail see a rabbit sitting in the grass; Beret Guy points to the bun.]&lt;br /&gt;
:Beret Guy: Bun alert!&lt;br /&gt;
:Ponytail: Oh, yeah! Cute!&lt;br /&gt;
:Beret Guy: Gotta document this. I'll notify everyone, send out a push alert.&lt;br /&gt;
:Ponytail: ...to who?&lt;br /&gt;
&lt;br /&gt;
:[Zoom in on Beret Guy and Ponytail; Beret Guy taps on his phone.]&lt;br /&gt;
:Beret Guy: Everyone subscribed to the alert system.&lt;br /&gt;
:Ponytail: Alert system?&lt;br /&gt;
:Beret Guy: Yeah! We built it over the last few years. It's pretty small. Still looking for investors.&lt;br /&gt;
:Ponytail: But...''why'' are you alerting people about rabbits?&lt;br /&gt;
&lt;br /&gt;
:[Zoom out; Beret Guy puts away his phone, points at the bun.]&lt;br /&gt;
:Beret Guy: I mean...look at them. They're like loaves of bread that hop.&lt;br /&gt;
:Ponytail: I see.&lt;br /&gt;
:Beret Guy: ''People need to know.''&lt;br /&gt;
&lt;br /&gt;
:[Zoom on Beret Guy in a frameless panel.]&lt;br /&gt;
:Beret Guy: They need to know:&lt;br /&gt;
:Beret Guy: '''''There are buns.'''''&lt;br /&gt;
&lt;br /&gt;
:[Ponytail walks off, Megan comes running towards Beret Guy with a phone in her hand.]&lt;br /&gt;
:Ponytail: Okay, uhh, I'm gonna go.&lt;br /&gt;
:Megan: ''I got the alert!'' Where's the bun? '''''Is it small?'''''&lt;br /&gt;
:Beret Guy: ''Extremely.''&lt;br /&gt;
:Megan: Oh my God.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*In [[1682: Bun]], it was Ponytail who was infatuated with &amp;quot;buns&amp;quot;, while Megan was the incredulous one questioning the situation. In this comic, the roles are reversed. This is a strong indication that the characters represented by Ponytail and Megan in this comic are not the same characters from ''1682: Bun''.&lt;br /&gt;
&lt;br /&gt;
*On August 6th, 2017 a [http://jgreenemi.com/bun-alert-an-afternoon-xkcd-project/ real-world Bun Alert] was created by a developer following inspiration from [[1871: Bun Alert]]. The project was shutdown by the developer on January 29th, 2018 and no longer sends out alerts, although [https://bunalert.jgreenemi.com/ the webpage] is still accessible.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Beret Guy]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Beret Guy's Business]]&lt;br /&gt;
[[Category:Buns]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=167:_Nihilism&amp;diff=143645</id>
		<title>167: Nihilism</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=167:_Nihilism&amp;diff=143645"/>
				<updated>2017-08-05T19:08:27Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 167&lt;br /&gt;
| date      = October 6, 2006&lt;br /&gt;
| title     = Nihilism&lt;br /&gt;
| image     = nihilism.png&lt;br /&gt;
| titletext = Why can't you have normal existential angst like all the other boys?&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
It is argued by some that {{w|atheism}} leads to {{w|nihilism}}. One rebuttal would be to reject the premise that there is no purpose outside of fulfilling divine intention, but Randall instead rejects the premise that nihilism ought to be burdensome. As a result, [[Beret Guy]] resolves that, if everything is ultimately meaningless, then it would be more fun to spend one's meaningless existence having fun rather than constantly moping. As reinforced by the title text, the complete lack of angst on Beret Guy's part is off-putting to other nihilists.&lt;br /&gt;
&lt;br /&gt;
This comic is, perhaps not coincidentally, a contraction of the philosophy exposed by Frederick Nietzsche. Cueball represents &amp;quot;the Last Man&amp;quot;, a mopey nihilist who refuses to make anything of himself. Beret Guy represents the &amp;quot;Übermensch&amp;quot;, a clearly superior figure with the will to create and act upon his own beliefs and values.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Beret Guy and Cueball approach a tree while talking.]&lt;br /&gt;
:Cueball: There is no God. Our existence is without purpose.&lt;br /&gt;
:Beret Guy: Oh, definitely.&lt;br /&gt;
:Beret Guy: We are adrift in an uncaring void indifferent to all our mortal toil.&lt;br /&gt;
:Cueball: Exactly! In the end, nothing we do matters.&lt;br /&gt;
:[Beret Guy climbs the tree.]&lt;br /&gt;
:Beret Guy: Totally.&lt;br /&gt;
:Cueball: We just... Why are you climbing that tree?&lt;br /&gt;
:[Beret Guy is now completely submerged in the tree.]&lt;br /&gt;
:Beret Guy: Because the future is an adventure! Come on!&lt;br /&gt;
:Cueball: But--&lt;br /&gt;
:Beret Guy: Hey! I found ''squirrels''!&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*This strip is the first appearance of Beret Guy.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Beret Guy]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Philosophy]]&lt;br /&gt;
[[Category:Religion]]&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Squirrels]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1870:_Emoji_Movie_Reviews&amp;diff=143412</id>
		<title>1870: Emoji Movie Reviews</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1870:_Emoji_Movie_Reviews&amp;diff=143412"/>
				<updated>2017-08-01T16:41:56Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1870&lt;br /&gt;
| date      = July 31, 2017&lt;br /&gt;
| title     = Emoji Movie Reviews&lt;br /&gt;
| image     = emoji_movie_reviews.png&lt;br /&gt;
| titletext = There's this idea that emoji are bad for communication because they replace ambiguity and nuance with a limited set of preselected emotions, but it doesn't really survive a collision with real-world usage of the thinking face or upside-down smiley.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Need to discuss title text and the signifigance of Wikipedia plotpoint and why it's ridiculous.}}&lt;br /&gt;
&lt;br /&gt;
This comic discusses {{w|The Emoji Movie}} between the cynical, Internet-equipped point of view of Megan and Cueball's language-enthusiasm. They ultimately agree the movie is bad.&lt;br /&gt;
&lt;br /&gt;
Many critics of {{w|The Emoji Movie}} point to superficial problems like the subject matter and the product placement. Here, that train of thought is articulated a bit more, and ultimately it's argued that the real reason the film is bad is because the creators cashed in on a trend without doing any research into it.&lt;br /&gt;
&lt;br /&gt;
When [[Megan]] first mentions The Emoji Movie's panned reviews, [[Cueball]] initially accuses the audience of being overly judgemental of the subject matter. He further expresses his fondness for {{w|emoji}} as an interesting and quirky part of language.&lt;br /&gt;
&lt;br /&gt;
Cueball offers an early defense of ''The Emoji Movie'' by comparing it to ''{{w|The Lego Movie}}'', which – despite effectively being an entire movie of {{w|product placement}} for {{w|Lego}} – received generally positive reviews.&lt;br /&gt;
&lt;br /&gt;
They start talking about a &amp;quot;Meh&amp;quot; emoji, who is the main character of the movie. The idea of &amp;quot;{{w|meh}}&amp;quot; as an emoji is actually ambiguous, as various emoji can be used to describe being unimpressed or neutral towards something. As given in examples from comic those are 😒 (U+1F612 Unamused face), 😐 (U+1F610 Neutral face) or 😕 (U+1F615 Confused face). The selection of a less identifiable emoji for the leading role also contrasts with the fact that the movie also features more iconic emojis.&lt;br /&gt;
&lt;br /&gt;
Megan mentions that one of the attempted jokes in the film is a room full of emojis that are unpopular. Bizarrely, the eggplant emoji (🍆, U+1F346 Aubergine) is featured among them. This is a clear sign that the creative team in charge of this movie had limited first-hand experience with SMS messaging; as any millennial will tell you, the 🍆 is a sly stand-in for a penis, due to its similar shape. [http://knowyourmeme.com/memes/eggplant-emoji-%F0%9F%8D%86] Cueball's reaction is to ask whether the creators of this film might be trying to be controversial on purpose, as it is popular lately (like for example in film {{w|Sausage Party}})&lt;br /&gt;
&lt;br /&gt;
The line from the Wikipedia plot summary was a {{w|Special:Permalink/793251548|direct quote from Wikipedia}}. The sentence was introduced to the article by editor {{w|User:Voicebox64|Voicebox64}} on {{w|Special:Diff/792689187|July 28, 2017}}, and the exact phrasing quoted in the comic came from editor {{w|User:SubZeroSilver|SubZeroSilver}} on {{w|Special:Diff/793088884|July 30}}.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete|Could someone check if the emojis are all correct? Thanks in advance.}}&lt;br /&gt;
[Cueball and Megan are walking. Megan is checking her phone, presumably to check reviews about The Emoji Movie.]&lt;br /&gt;
:Megan: Reviews for The Emoji Movie are... not good.&lt;br /&gt;
:Cueball: People are just snobs about emoji. I like them! Language is cool and weird.&lt;br /&gt;
[Megan stops; Cueball is now outside the frame.]&lt;br /&gt;
:Megan: It's apparently 80% product placement.&lt;br /&gt;
:Cueball (off-screen): Whatever. So was The Lego Movie, and I liked ''that''.&lt;br /&gt;
[Cueball looks at Megan's phone.]&lt;br /&gt;
:Megan: It features the emoji we all know and love - with a &amp;quot;Meh&amp;quot; emoji in the starring role!&lt;br /&gt;
:Cueball: Wait... a &amp;quot;Meh&amp;quot; emoji?&lt;br /&gt;
:Megan: I wondered about that, too; the others are all familiar. Do they mean 😒? Or 😐 or 😕?&lt;br /&gt;
:Cueball: That's a little confusing...&lt;br /&gt;
[Zooms in; Megan is now looking at her phone by herself.]&lt;br /&gt;
:Megan: There's a joke in the movie about the &amp;quot;emoji that no one uses&amp;quot; that includes the eggplant emoji.&lt;br /&gt;
:Cueball: ...was that on purpose? Or did they not run the script by enough people?&lt;br /&gt;
[Megan and Cueball continue walking.]&lt;br /&gt;
:Megan: Here's a line from the Wikipedia plot summary:&lt;br /&gt;
:Megan: ''Gene and Hi-5 come to a piracy app where they meet the hacker emoji Jailbreak, who wants to reach Dropbox so that she can live in the cloud.''&lt;br /&gt;
:Cueball: Okay.&lt;br /&gt;
:Cueball: It's possible this movie is bad.&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:Comics with color]]&lt;br /&gt;
[[Category:Emoji]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1474:_Screws&amp;diff=142229</id>
		<title>1474: Screws</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1474:_Screws&amp;diff=142229"/>
				<updated>2017-07-03T04:16:33Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1474&lt;br /&gt;
| date      = January 16, 2015&lt;br /&gt;
| title     = Screws&lt;br /&gt;
| image     = screws.png&lt;br /&gt;
| titletext = If you encounter a hex bolt, but you only brought screwdrivers, you can try sandwiching the head of the bolt between two parallel screwdriver shafts, squeezing the screwdrivers together with a hand at either end, then twisting. It doesn't work and it's a great way to hurt yourself, but you can try it!&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
Appliance makers sometimes use strange screw heads to hinder attempts from users to remove appliance covers. Users usually have handy screwdrivers for the first two screw types drawn, Phillips and Flat. More advanced users usually have some less standard drivers, such as Torx or Allen, however appliance makers keep designing increasingly strange screw heads and users keep acquiring increasingly strange screwdrivers.&lt;br /&gt;
&lt;br /&gt;
The comic is about the frustration a user may feel when faced with a screw for which they have no screwdriver. Usually the user will try to fit one of the drivers they have handy into the strange screw, leading to damaging the screw and/or the driver and/or the person wielding the tool.&lt;br /&gt;
&lt;br /&gt;
The types of screws listed are the following:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! style=&amp;quot;width: 25%&amp;quot;|Screw type&lt;br /&gt;
! Description&lt;br /&gt;
|-&lt;br /&gt;
| Phillips head&lt;br /&gt;
| {{w|List of screw drives#Phillips|Phillips screw drive}} and its corresponding screw head is one of the most recognizable types of screw heads that is commonly used in construction. This type of screw head was named after its inventor, a US businessman {{w|Henry F. Phillips}}. Neither the inventor nor his invention have any relationship to the Dutch electronics manufacturing company with similar, but not exactly the same name {{w|Philips}}.&lt;br /&gt;
|-&lt;br /&gt;
| Flat head&lt;br /&gt;
|  {{w|List_of_screw_drives#Slot|Slot head screws}} are frequently erroneously referred to as flat heads (a flat head screw refers, in fact, to the shape of the screw head, regardless of the shape of the drive socket). The slot head is also commonly used in construction. Although the diagram shows the slot truncated, the slot almost always runs across the entire head of the screw (as in the case of the &amp;quot;uranium screw&amp;quot; below).&lt;br /&gt;
|-&lt;br /&gt;
| Uh oh. Maybe it's on Amazon? (star-shaped screw)&lt;br /&gt;
| Manufacturers sometimes use screws that require special screwdrivers in order to prevent the customer from opening the product. The reference to Amazon is presumably a suggestion to search Amazon.com for the screwdriver. A number of star-shaped screw heads exist, notably the six-pointed {{w|Torx}}, and Apple's rounded {{w|Pentalobe screw|pentalobe screw}}, although there is no popular design that uses the 5-pointed star shape depicted in the comic. Torx screws are common in automotive applications — Phillips heads are designed to &amp;quot;cam out&amp;quot; at high torque to protect the screw, whereas Torx do not — and on bicycles where a higher tightening torque is needed than hex screws can support. They are also commonly used on disk brake mounts and in Smartphones.&lt;br /&gt;
&lt;br /&gt;
|-&lt;br /&gt;
| Cursed -1 Phillips head&lt;br /&gt;
| The head of a screw can be stripped by overuse, tightening the screw too much, using the wrong size screwdriver, or other misuse. As the driving surfaces wear away, removing the screw becomes more difficult, and the added pressure needed to drive the screw usually damages it further. &lt;br /&gt;
&lt;br /&gt;
The addition of &amp;quot;cursed&amp;quot; and &amp;quot;-1&amp;quot; in the titles is a reference to various role playing games (e.g. Dungeons and Dragons), where magical &amp;quot;cursed&amp;quot; items appear frequently. This often makes the cursed equipment (in the case of armor or weapons) incredibly difficult to remove, as it will cling to the wielder. Similarly, the cursed Phillips Head screw becomes difficult to remove due to the stripped head.&lt;br /&gt;
Alternatively, this may imply that the damage to the screw head was caused ''because'' the screw is &amp;quot;cursed&amp;quot; and therefore difficult to remove.&lt;br /&gt;
&lt;br /&gt;
The &amp;quot;-1&amp;quot; refers to the damage of the screw head. In role playing games, items such as weapons and armor may have an &amp;quot;enchantment&amp;quot;, with a positive enchantment making the item more effective, and a negative enchantment making the item less effective. Negatively enchanted items are often also cursed, as is the case with this screw head. The &amp;quot;-1&amp;quot; does not appear to be a reference to a Philips bit-size number, as those are always positive.&lt;br /&gt;
&lt;br /&gt;
Notably, the stripped screw bears a resemblance to a {{w|List_of_screw_drives#Pozidriv|Pozidriv head}}, a modified version of the Phillips head designed to resist slipping and subsequent stripping. Using a Phillips head screwdriver in a Pozidriv screw is very likely to damage the screw head and cause a real Pozidriv screwdriver to no longer mate correctly.&lt;br /&gt;
|-&lt;br /&gt;
| Crap, it's a ''rivet''.&lt;br /&gt;
| A {{w|rivet}} is not a screw - it is a permanent fastener which is secured by deforming the body of the fastener. Rivets cannot be removed with a screwdriver, they must be &amp;quot;drilled out&amp;quot;. Some bolts also have rounded rivet-style heads, though, which need a collet style tool to grip and remove.&lt;br /&gt;
|-&lt;br /&gt;
| Phillips head ruiner ''(actually a hex screw)''&lt;br /&gt;
| A reference to the fact that {{w|List_of_screw_drives#Hex_socket|hex socket}} screws can, in a pinch, be removed with a Phillips screwdriver (rather than the intended {{w|Allen wrench}}) but this will likely ruin the screwdriver in the process. &lt;br /&gt;
|-&lt;br /&gt;
| Uranium screw&lt;br /&gt;
| Uranium screws were [http://blog.nuclearsecrecy.com/2014/11/10/fat-mans-uranium/ used] in the [http://www.scintillators.ru/booc/criticality/reports/ref_050.pdf construction] of [http://www.osti.gov/scitech/servlets/purl/769001 nuclear weapons] during the twentieth century. Multiple radially extending short wave-like lines around the screw head symbolize radiant energy output, although real uranium screws were most likely made of depleted uranium, which is [http://www.gulflink.osd.mil/du_ii/du_ii_tabc.htm 40 percent less radioactive] than &amp;quot;raw&amp;quot; naturally-occurring uranium.&lt;br /&gt;
|-&lt;br /&gt;
| Phillip's head&lt;br /&gt;
| This is a morbidly literal interpretation of the misuse of an apostrophe in &amp;quot;Phillip's head&amp;quot;. This &amp;quot;screw&amp;quot; is actually a bloody bag containing the severed head of someone named Phillip. Intentionally or otherwise, this last punchline could be described as a &amp;quot;[http://www.tvtropes.org/pmwiki/pmwiki.php/Main/MindScrew mind screw]&amp;quot;.&lt;br /&gt;
|-&lt;br /&gt;
|Hex bolt (title text)&lt;br /&gt;
|A {{w|List_of_screw_drives#Hex|hex bolt}} has six external sides, so it could in theory be held by squeezing two screwdriver shafts together with the bolt in between. The amount of force on the two screwdriver shafts needed to turn the hex bolt will probably exceed the strength of human hands - the attempt would most likely only result in causing your hands to cramp or causing the screwdrivers to slip and cause further injury. The title text is making a play on the phrase &amp;quot;you can try&amp;quot;, which normally implies something with a reasonable chance of success, but here is only pointing out &amp;quot;just because you CAN try it doesn't mean you should&amp;quot;.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Eight drawings of different types of heads each with a caption:]&lt;br /&gt;
:[Plus sign-shaped screw.]&lt;br /&gt;
:Phillips head&lt;br /&gt;
:[Minus sign-shaped screw.]&lt;br /&gt;
:Flat head&lt;br /&gt;
:[Star-shaped screw.]&lt;br /&gt;
:Uh oh. Maybe it's on Amazon?&lt;br /&gt;
:[Plus sign-shaped screw with worn edges.]&lt;br /&gt;
:Cursed -1 Phillips head&lt;br /&gt;
:[No screw, just a circle.]&lt;br /&gt;
:Crap, it's a ''rivet''.&lt;br /&gt;
:[Hexagon-shaped screw.]&lt;br /&gt;
:Phillips-head ruiner&lt;br /&gt;
:[Minus sign-shaped screw going through the whole circle. Also giving off radiation.]&lt;br /&gt;
:Uranium screw (a real thing)&lt;br /&gt;
:[A sack with blood oozing out of it.]&lt;br /&gt;
:Phillip's head&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=161:_Accident&amp;diff=141779</id>
		<title>161: Accident</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=161:_Accident&amp;diff=141779"/>
				<updated>2017-06-23T20:56:48Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 161&lt;br /&gt;
| date      = September 22, 2006&lt;br /&gt;
| title     = Accident&lt;br /&gt;
| image     = accident.png&lt;br /&gt;
| titletext = As far as treachery-as-driving-music goes, Katamari music is matched only by Guitar Hero music.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
After someone plays a game enough, various instincts develop. One might be ready to push the right button when a right arrow comes up on screen. One might learn the tricky sequences of moves needed for a situation in the game, and find oneself doing them in another game in a similar situation. Or, as in this case, one might get used to pushing a giant ball around trying to collect smaller objects, and try doing so with your car when the [https://www.youtube.com/watch?v=iMH49ieL4es game's theme song] starts playing. &lt;br /&gt;
&lt;br /&gt;
In the game {{w|Katamari Damacy}}, the player has to grow a large ball of clutter by rolling the ball over smaller objects in the playfield, which become attached to the ball, growing the clutter ball larger and larger. As the clutter ball gets larger, bigger things in the environment will begin sticking to the clutter ball instead of acting as obstacles, giving hte player more clutter to grab. How big the player can get this clutter ball, or &amp;quot;katamari&amp;quot;, determines how well the player does in the game, as is also mentioned in [[83: Katamari]].&lt;br /&gt;
&lt;br /&gt;
When Katamari Damacy's theme song comes on in the third panel, [[Cueball]] begins acting out the game's premise, and drives his car into a mailbox - which &amp;quot;looked smaller&amp;quot; than his car - trying to get it to attach. This doesn't work so well outside of the game. &lt;br /&gt;
&lt;br /&gt;
The title text implies that music used in the game {{w|Guitar Hero}} is equally hazardous when driving. Anyone who's become accustomed to rocking out on a fake guitar to a particular song could find themselves involuntarily playing the air guitar when said song comes on the radio unexpectedly. Randall is pointing out that Guitar Hero-induced spontaneous air guitar performances are not safe activities while driving. Alternatively, one may try to hit all incoming objects in an attempt to mimic hitting strings of notes as they move down the fretboard, which would be immediately more disastrous.&lt;br /&gt;
&lt;br /&gt;
The theme song from Katamari Damacy is also mentioned in [[851: Na]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball driving in a car while listening to some music.]&lt;br /&gt;
:Music: ♫ ♩ ♬&lt;br /&gt;
:[Another panel of Cueball listening to music while driving. Cueball's head is turned to the right.]&lt;br /&gt;
:Music: ♬ ♪ ♩&lt;br /&gt;
:[A third panel. Cueball's head is turned to the left.]&lt;br /&gt;
:Music: ♫ NAAAA NA NA NANA NANA NA NA KATAMARI DAMACY ♪ ♩&lt;br /&gt;
:[Cueball and Megan talking.]&lt;br /&gt;
:Megan: And that's when you veered into the mailbox?&lt;br /&gt;
:Cueball: It looked smaller then me. It was just instinct.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
* According to this comic's official transcript, Megan is the owner of the mailbox.&lt;br /&gt;
&lt;br /&gt;
{{Comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Video games]]&lt;br /&gt;
[[Category:Music]]&lt;br /&gt;
[[Category:Guitar Hero]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=157:_Filler_Art&amp;diff=141778</id>
		<title>157: Filler Art</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=157:_Filler_Art&amp;diff=141778"/>
				<updated>2017-06-23T20:52:21Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 157&lt;br /&gt;
| date      = September 15, 2006&lt;br /&gt;
| title     = Filler Art&lt;br /&gt;
| image     = filler_art.png&lt;br /&gt;
| titletext = Maybe I should let up on Megatokyo a little?&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
There are times in which the owner of a webcomic can not make a comic on time for the next scheduled update (for example, needing to attend to a family emergency). Some deal with these situations by creating a &amp;quot;buffer&amp;quot; of comics (that is, making several comics ahead of time) in anticipation for these events. However, if the buffer runs out (or if there was no buffer in the first place), the owner might have to resort to uploading whatever is available (e.g. concept art, random sketches, a draft of the planned comic, etc.). Many webcomic owners prefer to upload filler art so that their more fickle fans can see that they have not abandoned the comic.&lt;br /&gt;
&lt;br /&gt;
Here, [[Randall]] parodies this situation with two separate punchlines. First, he tells us that he has to go to the doctor to get his thighs rotated, which is medically unnecessary (as a &amp;quot;thigh rotation&amp;quot; is physically impossible, and is likely a play on {{w|tire rotation}}). Second, he refers to &amp;quot;new character art&amp;quot; for his comic. The punchline here is that, since the characters are drawn in a [[stick figure]] style, there are no distinguishable features between the man here and most other males in the comic series. In addition, the fact that this stick figure should not have taken more than 10 seconds to draw makes the notion that Randall has been &amp;quot;working on&amp;quot; it ridiculous.&lt;br /&gt;
&lt;br /&gt;
The title text refers to {{w|Megatokyo}}, a popular webcomic widely known for its use of filler art. Creator {{w|Fred Gallagher (cartoonist)|Fred Gallagher}}, who goes by his online moniker Piro, frequently makes use of what have come to be called &amp;quot;[http://www.megatokyo.com/index.php?strip_id=27 Dead Piro Days]&amp;quot;, in which he posts character art, or concept art often based in the comic's world or characters, generally of draft or unfinished quality. By his own admission, these days of filler art are sometimes the result of nothing more than his feeling too under the weather, or tired, or emotionally depressed to put in the necessary amount of work to finish a proper update. While Gallagher has been raked over the coals for this by the broader webcomics community, longtime fans of Megatokyo tend to be highly tolerant and have been described as &amp;quot;[http://ca.ign.com/articles/2006/06/21/take-a-trip-to-megatokyo some of the most patient and forgiving]&amp;quot; readers, often viewing these lapses as endearing rather than inconvenient.&lt;br /&gt;
&lt;br /&gt;
[[Randall]]'s mention of letting up on Megatokyo refers to [[142: Parody Week: Megatokyo]], in which Megatokyo and Gallagher were also teased.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:Sorry guys no comic today. I've gotta go to the doctor to get my thighs rotated. But here's some new character art I'm working on!&lt;br /&gt;
:[Cueball.]&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1854:_Refresh_Types&amp;diff=141777</id>
		<title>1854: Refresh Types</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1854:_Refresh_Types&amp;diff=141777"/>
				<updated>2017-06-23T20:49:07Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Normal refresh */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1854&lt;br /&gt;
| date      = June 23, 2017&lt;br /&gt;
| title     = Refresh Types&lt;br /&gt;
| image     = refresh_types.png&lt;br /&gt;
| titletext = The hardest refresh requires both a Mac keyboard and a Windows keyboard as a security measure, like how missile launch systems require two keys to be turned at once.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|This is chaos - multiple explanations should be merged and condensed. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
This Comic lists five different levels of refresh operations for web applications. The first three (soft, normal, and hard refresh) are different operations done in the browser to request that information be retrieved from the server. The other two (harder and hardest refresh) are further, imaginary operations that perform &amp;quot;refresh&amp;quot; operations on remote resources.&lt;br /&gt;
&lt;br /&gt;
=== Soft refresh ===&lt;br /&gt;
&lt;br /&gt;
Soft refresh refers to an operation in a web page that requests new information without reloading the page. The given example, Gmail, includes a feature that allows users to pull down new emails without reloading the inbox interface. It is a command given to the web page using {{w|Javascript}}, rather than to the browser.&lt;br /&gt;
&lt;br /&gt;
=== Normal refresh ===&lt;br /&gt;
&lt;br /&gt;
A &amp;quot;normal refresh&amp;quot; is a browser operation that reloads portions of a web page that have changed since the original load. It is the refresh operation triggered by refresh buttons in browsers, though can also be activated using the three common keyboard commands listed by Randall, and will generally accomplish the same thing as a soft refresh, with the additional cost of reloading the web page.&lt;br /&gt;
&lt;br /&gt;
=== Hard refresh ===&lt;br /&gt;
&lt;br /&gt;
Hard refresh is a less common browser operation that clears any cached files associated with the page before requesting a new copy. Browser caching is a way to store webpage resources locally in order to decrease load time and data transmitted. Hard refreshes are usually used when a webapp has changed in such a way that the cached data is interfering with the proper display of the page. A hard refresh is slower because it forces the browser to download the entire page, but it ensures that the page is displayed as it is currently being served.&lt;br /&gt;
&lt;br /&gt;
Interestingly, hard refresh HTTP request contains special headers (associated metadata) that command all intermediate proxy servers to drop their caches too. These headers can be seen by end application running on the web server, that can choose to reload some data from database and redo some long-running calculations in this case, even though this is not mandated by HTTP standard. In {{w|Orchestration (computing)|orchestrated}} environment it may indirectly cause some virtual machines to be rebooted. Rebooting actual physical server upon web page hard refresh is of course not normal, but additional processing may trigger some hardware or operating system bug that will cause exactly this.&lt;br /&gt;
&lt;br /&gt;
=== Harder refresh ===&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Harder refresh&amp;quot; is a joke that extends the existing naming scheme. The joke is that if a &amp;quot;hard refresh&amp;quot; resets the browser display and cache, a harder refresh should reset the source of the data by cycling power in the data center. Assuming no damage was done, this would reset the memory on the server, erasing any information that had not been written to disk, and setting the server to the state it was in at launch. This would cause considerable downtime, and would be unlikely to help the user at all.&lt;br /&gt;
&lt;br /&gt;
=== Hardest refresh ===&lt;br /&gt;
&lt;br /&gt;
The fifth option, &amp;quot;hardest refresh&amp;quot;, moves beyond resetting the source of the data and resets the entire internet back to {{w|ARPANET}}, an early military network which was a forerunner to the modern internet. The implications of this are not made clear, but it should be noted that it wouldn't help to fix any problems a user is experiencing in-browser, as {{w|HTTP}}, the protocol by which web pages are sent, was not developed until late 1990, the year ARPANET was decommissioned.&lt;br /&gt;
&lt;br /&gt;
The Keyboard shortcuts listed for the three real actions are, in fact, standard shortcuts. shortcuts tend to be longer and more complicated for less common operations, and the fake shortcuts play to this idea. The &amp;quot;harder refresh&amp;quot; uses six keys, including the non-standard '[https://askubuntu.com/questions/19558/what-are-the-meta-super-and-hyper-keys HYPER]' key, a feature of the {{w|Space cadet keyboard}}.&lt;br /&gt;
&lt;br /&gt;
The &amp;quot;hardest refresh&amp;quot; shortcut uses fifteen keys, including non-standard ones such as Ø and ⏏. (The latter is the &amp;quot;eject&amp;quot; key found on [older?] Mac keyboards.) The shortcut makes amusing comparisons about a shortcut that includes not only the F5 function key, but also the keys for the letter &amp;quot;F&amp;quot; and the digit &amp;quot;5&amp;quot;, as well as the similarity in appearance between O, 0, and Ø.&lt;br /&gt;
&lt;br /&gt;
The title text suggests that the inclusion of both the windows key and command key in the &amp;quot;Hardest refresh&amp;quot; shortcut is a security measure akin to the {{w|Two-man rule}}, as it would require two keyboards to enter.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon. No table is the preferred version, just describe what's in the picture including the special keys.}}&lt;br /&gt;
:{| class=wikitable&lt;br /&gt;
! Refresh Type&lt;br /&gt;
! Example Shortcuts&lt;br /&gt;
! Effect&lt;br /&gt;
|-&lt;br /&gt;
| Soft Refresh &lt;br /&gt;
| Gmail &amp;lt;span style=&amp;quot;border: 1px solid black&amp;quot;&amp;gt;REFRESH&amp;lt;/span&amp;gt; Button &lt;br /&gt;
| Requests update within Javascript&lt;br /&gt;
|-&lt;br /&gt;
| Normal Refresh &lt;br /&gt;
| F5, CTRL-R,  &amp;amp;#x2318;-R&lt;br /&gt;
 |Refreshes page&lt;br /&gt;
|-&lt;br /&gt;
|Hard Refresh &lt;br /&gt;
| CTRL-F5, CTRL-&amp;amp;#x21E7;,  &amp;amp;#x2318;-&amp;amp;#x21E7;-R &lt;br /&gt;
| Refreshes page including cached files&lt;br /&gt;
|-&lt;br /&gt;
|Harder Refresh &lt;br /&gt;
| CTRL-&amp;amp;#x21E7;-HYPER-ESC-R-F5 &lt;br /&gt;
| Remotely cycles power to datacenter&lt;br /&gt;
|-&lt;br /&gt;
|Hardest Refresh &lt;br /&gt;
|CTRL- &amp;amp;#x2318;&amp;lt;span title=&amp;quot;Windows key logo&amp;quot;&amp;gt;&amp;amp;#x229E;&amp;lt;/span&amp;gt;&amp;amp;#x21E7;#-R-F5-F-5-ESC-O-0-Ø-&amp;amp;#x23CF;-SCROLL LOCK &lt;br /&gt;
|Internet starts over from Arpanet&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Computers]]&lt;br /&gt;
[[Category:Internet]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1854:_Refresh_Types&amp;diff=141776</id>
		<title>1854: Refresh Types</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1854:_Refresh_Types&amp;diff=141776"/>
				<updated>2017-06-23T20:47:53Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Soft refresh */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1854&lt;br /&gt;
| date      = June 23, 2017&lt;br /&gt;
| title     = Refresh Types&lt;br /&gt;
| image     = refresh_types.png&lt;br /&gt;
| titletext = The hardest refresh requires both a Mac keyboard and a Windows keyboard as a security measure, like how missile launch systems require two keys to be turned at once.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|This is chaos - multiple explanations should be merged and condensed. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
This Comic lists five different levels of refresh operations for web applications. The first three (soft, normal, and hard refresh) are different operations done in the browser to request that information be retrieved from the server. The other two (harder and hardest refresh) are further, imaginary operations that perform &amp;quot;refresh&amp;quot; operations on remote resources.&lt;br /&gt;
&lt;br /&gt;
=== Soft refresh ===&lt;br /&gt;
&lt;br /&gt;
Soft refresh refers to an operation in a web page that requests new information without reloading the page. The given example, Gmail, includes a feature that allows users to pull down new emails without reloading the inbox interface. It is a command given to the web page using {{w|Javascript}}, rather than to the browser.&lt;br /&gt;
&lt;br /&gt;
=== Normal refresh ===&lt;br /&gt;
&lt;br /&gt;
A &amp;quot;normal refresh&amp;quot; is a browser operation that reloads portions of a web page that have changed since the original load. It is the refresh operation triggered by refresh buttons in browsers, and will generally accomplish the same thing as a soft refresh, with the additional cost of reloading the web page.&lt;br /&gt;
&lt;br /&gt;
=== Hard refresh ===&lt;br /&gt;
&lt;br /&gt;
Hard refresh is a less common browser operation that clears any cached files associated with the page before requesting a new copy. Browser caching is a way to store webpage resources locally in order to decrease load time and data transmitted. Hard refreshes are usually used when a webapp has changed in such a way that the cached data is interfering with the proper display of the page. A hard refresh is slower because it forces the browser to download the entire page, but it ensures that the page is displayed as it is currently being served.&lt;br /&gt;
&lt;br /&gt;
Interestingly, hard refresh HTTP request contains special headers (associated metadata) that command all intermediate proxy servers to drop their caches too. These headers can be seen by end application running on the web server, that can choose to reload some data from database and redo some long-running calculations in this case, even though this is not mandated by HTTP standard. In {{w|Orchestration (computing)|orchestrated}} environment it may indirectly cause some virtual machines to be rebooted. Rebooting actual physical server upon web page hard refresh is of course not normal, but additional processing may trigger some hardware or operating system bug that will cause exactly this.&lt;br /&gt;
&lt;br /&gt;
=== Harder refresh ===&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Harder refresh&amp;quot; is a joke that extends the existing naming scheme. The joke is that if a &amp;quot;hard refresh&amp;quot; resets the browser display and cache, a harder refresh should reset the source of the data by cycling power in the data center. Assuming no damage was done, this would reset the memory on the server, erasing any information that had not been written to disk, and setting the server to the state it was in at launch. This would cause considerable downtime, and would be unlikely to help the user at all.&lt;br /&gt;
&lt;br /&gt;
=== Hardest refresh ===&lt;br /&gt;
&lt;br /&gt;
The fifth option, &amp;quot;hardest refresh&amp;quot;, moves beyond resetting the source of the data and resets the entire internet back to {{w|ARPANET}}, an early military network which was a forerunner to the modern internet. The implications of this are not made clear, but it should be noted that it wouldn't help to fix any problems a user is experiencing in-browser, as {{w|HTTP}}, the protocol by which web pages are sent, was not developed until late 1990, the year ARPANET was decommissioned.&lt;br /&gt;
&lt;br /&gt;
The Keyboard shortcuts listed for the three real actions are, in fact, standard shortcuts. shortcuts tend to be longer and more complicated for less common operations, and the fake shortcuts play to this idea. The &amp;quot;harder refresh&amp;quot; uses six keys, including the non-standard '[https://askubuntu.com/questions/19558/what-are-the-meta-super-and-hyper-keys HYPER]' key, a feature of the {{w|Space cadet keyboard}}.&lt;br /&gt;
&lt;br /&gt;
The &amp;quot;hardest refresh&amp;quot; shortcut uses fifteen keys, including non-standard ones such as Ø and ⏏. (The latter is the &amp;quot;eject&amp;quot; key found on [older?] Mac keyboards.) The shortcut makes amusing comparisons about a shortcut that includes not only the F5 function key, but also the keys for the letter &amp;quot;F&amp;quot; and the digit &amp;quot;5&amp;quot;, as well as the similarity in appearance between O, 0, and Ø.&lt;br /&gt;
&lt;br /&gt;
The title text suggests that the inclusion of both the windows key and command key in the &amp;quot;Hardest refresh&amp;quot; shortcut is a security measure akin to the {{w|Two-man rule}}, as it would require two keyboards to enter.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
{{incomplete transcript|Do NOT delete this tag too soon. No table is the preferred version, just describe what's in the picture including the special keys.}}&lt;br /&gt;
:{| class=wikitable&lt;br /&gt;
! Refresh Type&lt;br /&gt;
! Example Shortcuts&lt;br /&gt;
! Effect&lt;br /&gt;
|-&lt;br /&gt;
| Soft Refresh &lt;br /&gt;
| Gmail &amp;lt;span style=&amp;quot;border: 1px solid black&amp;quot;&amp;gt;REFRESH&amp;lt;/span&amp;gt; Button &lt;br /&gt;
| Requests update within Javascript&lt;br /&gt;
|-&lt;br /&gt;
| Normal Refresh &lt;br /&gt;
| F5, CTRL-R,  &amp;amp;#x2318;-R&lt;br /&gt;
 |Refreshes page&lt;br /&gt;
|-&lt;br /&gt;
|Hard Refresh &lt;br /&gt;
| CTRL-F5, CTRL-&amp;amp;#x21E7;,  &amp;amp;#x2318;-&amp;amp;#x21E7;-R &lt;br /&gt;
| Refreshes page including cached files&lt;br /&gt;
|-&lt;br /&gt;
|Harder Refresh &lt;br /&gt;
| CTRL-&amp;amp;#x21E7;-HYPER-ESC-R-F5 &lt;br /&gt;
| Remotely cycles power to datacenter&lt;br /&gt;
|-&lt;br /&gt;
|Hardest Refresh &lt;br /&gt;
|CTRL- &amp;amp;#x2318;&amp;lt;span title=&amp;quot;Windows key logo&amp;quot;&amp;gt;&amp;amp;#x229E;&amp;lt;/span&amp;gt;&amp;amp;#x21E7;#-R-F5-F-5-ESC-O-0-Ø-&amp;amp;#x23CF;-SCROLL LOCK &lt;br /&gt;
|Internet starts over from Arpanet&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Computers]]&lt;br /&gt;
[[Category:Internet]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1853:_Once_Per_Day&amp;diff=141677</id>
		<title>1853: Once Per Day</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1853:_Once_Per_Day&amp;diff=141677"/>
				<updated>2017-06-22T07:25:53Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1853&lt;br /&gt;
| date      = June 21, 2017&lt;br /&gt;
| title     = Once Per Day&lt;br /&gt;
| image     = once_per_day.png&lt;br /&gt;
| titletext = I'm not totally locked into my routine—twice a year, I take a break to change the batteries in my smoke detectors.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Links for cup of tea, exercise and sleep missing.}}&lt;br /&gt;
&lt;br /&gt;
Many news reports on health recommend the &amp;quot;best&amp;quot; way to perform the processes, such as eating, drinking, exercising, and sleeping, that are required to live. These reports tend to give such factors as a type of food to consume regularly, the amount of a nutrient to consume, or how long to exercise, in terms of what or how much to do daily. A simple example of this is the proverb, &amp;quot;An apple a day keeps the doctor away.&amp;quot; Perhaps this kind of advice is [[1592|overthinking]] things, but [[Cueball]] decides to follow it strictly as explained in the caption.&lt;br /&gt;
&lt;br /&gt;
So when [[Megan]] asks Cueball what his plans are, he just list his routine consisting only of things that the news has told him exactly how often to do. &lt;br /&gt;
&lt;br /&gt;
His list includes the following, which he has to do once per day:&lt;br /&gt;
*Eat an [//www.care2.com/greenliving/10-reasons-to-eat-an-apple-a-day.html apple] &lt;br /&gt;
*Eat an [//www.nhs.uk/news/2016/11November/Pages/Eating-one-egg-a-day-may-lower-risk-of-stroke.aspx egg]&lt;br /&gt;
*Take one [//www.webmd.com/men/features/aspirin-day-not aspirin]&lt;br /&gt;
*Eat a piece of [//www.everydayhealth.com/diet-and-nutrition-pictures/delicious-reasons-to-eat-dark-chocolate.aspx dark chocolate]&lt;br /&gt;
*Drink [//www.lifescript.com/diet-fitness/tips/y/your_weight-loss_solution_drink_6_glasses_of_water_a_day.aspx six glasses of water]&lt;br /&gt;
*Drink [//www.health.com/health/article/0,,20410287,00.html one glass of red wine]&lt;br /&gt;
*Drink [//www.huffingtonpost.com/2013/10/17/coffee-health-benefits_n_4102133.html a cup of coffee]&lt;br /&gt;
*Drink a cup of tea&lt;br /&gt;
*Get 30 minutes of exercise&lt;br /&gt;
*Get 8 hours of sleep&lt;br /&gt;
&lt;br /&gt;
Of course, if Cueball ''only'' does these things, then he can't/doesn't attend to other important matters, such as going to work, which most likely allows him to buy the recommended materials in the first place. And the routine is subject to change as soon as he hears another such daily recommendation on the news.&lt;br /&gt;
&lt;br /&gt;
In the title text Cueball explains that his daily routine is not completely fixed. It is broken twice a year, since he also follows public information campaigns suggesting the replacement {{w|Smoke_detector#Batteries|smoke detector batteries}} twice a year. While the US {{w|National Fire Protection Association}} recommends a replacement at least once per year others suggest every time when the clock changes according to {{w|daylight saving time}}, i.e. twice a year. (All such recommendations will likely become irrelevant as citizens of the United States, starting in California, are encouraged to replace their existing smoke detectors with new models containing irremovable ten-year batteries.) This is just another example for official overdone recommendations nobody follows, in this case since smoke detectors make annoying beeps when their batteries run low and thus rarely need routine replacements before then. Fire alarms was the subject of [[1794: Fire]] not so long before this comic.&lt;br /&gt;
&lt;br /&gt;
Drinking six glasses of water per day has been the subject recently in [[1708: Dehydration]], and earlier it was more common to say eight glasses per day (which was also mentioned in Dehydration), and that was part of the searches in the much earlier [[715: Numbers]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Megan and Cueball are standing facing each other talking.]&lt;br /&gt;
:Megan: Got any plans for the day?&lt;br /&gt;
:Cueball: I'm going to eat an apple, an egg, one baby aspirin, and a piece of dark chocolate, drink six glasses of water, one glass of red wine, a cup of coffee, and a cup of tea, then do 30 minutes of exercise. &lt;br /&gt;
:Cueball: Then back to sleep for another 8 hours!&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
:I only do things that news stories have specifically told me to do once per day.&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:Food]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1852:_Election_Map&amp;diff=141576</id>
		<title>1852: Election Map</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1852:_Election_Map&amp;diff=141576"/>
				<updated>2017-06-20T01:44:39Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1852&lt;br /&gt;
| date      = June 19, 2017&lt;br /&gt;
| title     = Election Map&lt;br /&gt;
| image     = election_map.png&lt;br /&gt;
| titletext = Luckily for my interpretation, no precincts were won by the Green Party.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|I think it's okay now...?}}&lt;br /&gt;
A wave (e.g. an electromagnetic wave, like light) changes its frequency and wavelength when its source is moving relative to the observer, due to the {{w|Doppler effect}}. In the case of light, increased frequency &amp;amp;mdash; indicating movement towards the observer &amp;amp;mdash; is called {{w|blueshift}}, while reduced frequency &amp;amp;mdash; indicating movement away from the observer &amp;amp;mdash; is called {{w|redshift}}. These names apply even if the effect is outside of the visible spectrum (e.g. infrared light that has reduced frequency is called redshifted, even though its frequency is further away from that of visible red light than normally). Red and blue colors are used accordingly to indicate the effect.&lt;br /&gt;
&lt;br /&gt;
If one object (like the galaxy) is redshifted on one of the edges, and blueshifted on the other, it usually means that it's rotating (and the axis of rotation isn't completely parallel to the line of sight).&lt;br /&gt;
&lt;br /&gt;
The map [[Cueball]] shows represents election results. Red regions mark where one of the parties won, while blue regions indicate some other party (as Randall lives in the United States the parties are probably {{w|Democratic party (United States)|Democratic}} (blue) and {{w|Republican party (United States)|Republican}} (red), although it's not explicitly stated in the comic). Cueball analyzes the map as if it showed magnitude of Doppler effect by the light emitted by the region. This, however, is not what the viewers expect to hear during the election night from election analysis. That's why Cueball was fired from the job rather quickly, as the caption states.&lt;br /&gt;
&lt;br /&gt;
The title text states that the {{w|Green Party of the United States|Green Party}} did not win any {{w|Precinct#Elections|precincts}}. If the Green Party won, its regions would likely be colored green, which would not fit to Cueball's Doppler effect analysis. Sometimes, however, green is used to indicate lack of movement. And since the center of rotating object isn't moving, green-coloured spaces could actually be interpreted accodding to Doppler analysis - but only if they appeared near the center of the district.&lt;br /&gt;
&lt;br /&gt;
The map appears to depict {{w|Georgia's 6th congressional district}}, which is set for a special election on June 20, 2017, the day after the comic ran.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[On a TV-screen Cueball is seen pointing at a map on the left which is colored in red and blue. There is a header on the map and in the top right corner of the screen the title of the program is shown. Below this at the bottom of the screen text indicate that the program is broad live. Cueball explains the map, with his text shown above the TV.]&lt;br /&gt;
:Header: Results&lt;br /&gt;
:Title: ''Election'' Night&lt;br /&gt;
:Live&lt;br /&gt;
&lt;br /&gt;
:Cueball: These northern precincts appear red, which probably means they're moving away from us, whereas these bluer regions are approaching us. I believe the district may be rotating in space.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]  &lt;br /&gt;
:My career as an election analyst was short-lived.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*Cueball was fired from his job a number of times before. Many are listed in [[1428: Move Fast and Break Things]].&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Maps]]&lt;br /&gt;
[[Category:Politics]]&lt;br /&gt;
[[Category:Astronomy]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1737:_Datacenter_Scale&amp;diff=141391</id>
		<title>1737: Datacenter Scale</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1737:_Datacenter_Scale&amp;diff=141391"/>
				<updated>2017-06-16T02:03:59Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1737&lt;br /&gt;
| date      = September 23, 2016&lt;br /&gt;
| title     = Datacenter Scale&lt;br /&gt;
| image     = datacenter_scale.png&lt;br /&gt;
| titletext = Asimov's Cosmic AC was created by linking all datacenters through hyperspace, which explains a lot. It didn't reverse entropy--it just discarded the universe when it reached end-of-life and ordered a new one.&lt;br /&gt;
}}&lt;br /&gt;
==Explanation==&lt;br /&gt;
&lt;br /&gt;
This comic expands, to the limit, the strategy that it's a net cost saving to allow cheap hardware to fail and simply replace it than to have robust but much more expensive systems to start with. The technique was made famous by [https://books.google.com/books?id=zdlZ2rrcZWEC&amp;amp;pg=PA19&amp;amp;lpg=PA19#v=onepage&amp;amp;q&amp;amp;f=false Google circa 1999,] when its successful cost-effective server designs were actually using sub-consumer, nearly junk, hardware. &lt;br /&gt;
&lt;br /&gt;
{{w|RAID}} (&amp;quot;redundant array of independent disks&amp;quot;) is a technology that splits data across several hard drives as if they were one. RAID comes in several levels (varieties) which have different applications, but one of the big applications of RAID is creating mirrored hard disks that back each other up. If one disk drive in such a RAID fails, no data is lost.&lt;br /&gt;
&lt;br /&gt;
However, RAID is complicated to configure, so you don't want to be constantly setting it up. An alternative technique for data centers is, therefore, to simply send the data to several servers at once. This makes maintenance easier, but without RAID, one hard disk crash basically breaks the server. However, this is what the woman with a bun's (possibly an adult [[Science Girl]]) data center is doing since their scale is so large that fixing individual servers actually more expensive than simply buying a new one for replacement, and instead of fixing the drive they throw away the machine. (More about this approach will be explained later on)&lt;br /&gt;
&lt;br /&gt;
From here, the comic starts to exaggerate. Nowadays, servers can be made extremely small (&amp;quot;{{w|Blade server}}s&amp;quot;) and dozens of servers can be attached to one {{w|19-inch rack}} in a data center. Rather than going to the effort of unplugging and unscrewing one blade from the rack, when a blade fails at [[Cueball]]'s data center they just throw away the rack, and [[Ponytail]] agrees and mildly mocks the woman with a bun for replacing one server.&lt;br /&gt;
&lt;br /&gt;
[[Hairy]]'s data center goes one step further - they have so many servers that they would constantly have to be throwing away and replacing racks, so instead they just build a new room when one rack fails. This would be currently possible with small modular data centers that are built in shipping containers for easy transport and can be linked together to expand capacity.  Here the cargo-container &amp;quot;room&amp;quot; with the failure would be quickly swapped with a fresh one.  Cueball adds &amp;quot;like Google!&amp;quot; - [[Randall]] previously mentioned {{w|Google|Google's}} approach to hard drive failures in the [[what if?]] ''{{what if|63|Google's Datacenters on Punch Cards}}''. Back in [http://static.googleusercontent.com/media/research.google.com/de//archive/disk_failures.pdf 2007] they had one failure every few minutes, which might have increased hugely since then.&lt;br /&gt;
&lt;br /&gt;
Finally [[Megan]] appears and her company, of course, breaks the scale of silliness in exaggeration. She says that they don't have any fire extinguishers (neither {{w|Fire sprinkler system|regular sprinklers}} nor the systems that deploy gasses like FM-200 which alter the room air's ability to sustain a fire). Rather, they just rope the center off, thus letting the data center burn down. Then they simply move a town over and build a new one. This may indicate they are so big that the entire town will burn down if their center catches fire, for else they did not have to skip town. Alternatively, they just leave the center burning and this may cause problems in that town, so they simply flee the premises. &lt;br /&gt;
&lt;br /&gt;
Most big internet companies do have multiple redundant data centers around the world, in order to increase speeds for users in different countries, but Megan's idea would be very expensive, result in increased {{w|Latency (engineering)|latency}}, possibly kill people (either in their company, or other people in the town and since they do not try to put out the fire), and cause severe destruction of properties in addition to their own.  These last two items would result in additional litigation and fines, and potentially jail sentences for the people charged with implementing the policy.  They may also result in other towns being unwilling to take their business, out of fear they will wind up burning too.&lt;br /&gt;
&lt;br /&gt;
Hairy still thinks that it makes sense, while Cueball wonders what difference the roping off does. This could again be a reference to the fact that they just let the buildings burn without bothering about the local consequences, and the next step is just one more step towards the extreme of the title text. &lt;br /&gt;
&lt;br /&gt;
This comic references how, as data requirements expand, the cost of time eventually outweighs the cost of hardware at ever increasing scales (drive, rack, room, building). While this comic takes this to the extreme, with whole buildings being destroyed for simple flaws, the concept is not as far-fetched as it seems if &amp;quot;thrown out&amp;quot; is taken to include being sold to equipment refurbishers.  It could indeed be cost effective for a large data services provider to resell racks or even whole data center modules at some significant fraction of their &amp;quot;as new&amp;quot; price as opposed expending the time and effort to attempt a repair.  The equipment refurbisher would then rely on a {{w|competitive advantage|cost advantage}} like cheaper labor to repair the flaw and sell it back to Google or another company with less demanding requirements.  Equipment rental firms already operate on this model and with the added incentive customers preferring to rent newer models, this means that the equipment is often ''preemptively'' replaced before failures even occur.  &lt;br /&gt;
&lt;br /&gt;
The title text refers to {{w|Isaac Asimov}}'s science-fiction short story ''{{w|The Last Question}}'' ([http://imgur.com/gallery/9KWrH comic version]), where humanity asks, at different stages of its spatial and technological development, the same question to increasingly advanced computers: &amp;quot;How can the net amount of {{w|entropy}} of the universe be massively decreased?&amp;quot;. At each point, the computer's answer is that it does not yet have sufficient data for a meaningful answer. Ultimately, the computers are all linked through hyperspace, outside the physical boundaries of the universe, and make up a single computing entity named AC which keeps pondering the question even as the {{w|heat death of the universe}} occurs and time and space cease to exist. When AC finally discovers the answer, since there is nobody left to report it to, it decides to demonstrate it and says &amp;quot;{{w|Let there be light|LET THERE BE LIGHT!}}&amp;quot;, which are the first words said by God during the Creation, according to the {{w|Book of Genesis}}. Here, the title text implies that, as the universe died, AC no longer had a use for it as a physical support and, taking the comic's logic to the next extreme, chose to discard it and get a brand-new one instead of bothering to &amp;quot;fix&amp;quot; it by reversing its entropy. This short story was also referenced in [[1448: Question]].&lt;br /&gt;
&lt;br /&gt;
This comic's concept of taking a real world phenomenon and exaggerating it to levels currently considered implausible for comic effect closely mimics an earlier comic which describes progressively more &amp;quot;hardcore&amp;quot; programmers in [[378: Real Programmers]]. This comic might be related to [[1567: Kitchen Tips]] which suggests not throwing away your dishes but washing them.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Zoom in on a woman with a bun holding her hand palm up in front of her taking to people off-panel right.]&lt;br /&gt;
:Woman with a bun: RAID controllers don't make sense at our scale; everything is redundant at higher levels. When a drive fails, we just throw away the whole machine.&lt;br /&gt;
&lt;br /&gt;
:[In this frame-less panel it is revealed that the woman with a bun talked to Cueball and Ponytail who is looking her way.]&lt;br /&gt;
:Cueball: Machine? We throw away whole racks at a time.&lt;br /&gt;
:Ponytail: Yeah, who replaces ''one server''?&lt;br /&gt;
&lt;br /&gt;
:[Hairy has appeared from the left and holds one hand palm up towards the other three where also the woman with a bun has turned towards him.]&lt;br /&gt;
:Hairy: We just replace whole rooms at once. At our scale, messing with racks isn't economical.&lt;br /&gt;
:Woman with a bun:  Wow.&lt;br /&gt;
:Cueball: Like Google!&lt;br /&gt;
&lt;br /&gt;
:[Megan walks in from the left, and everyone including Hairy now looks towards her. Cueball has taken a hand up to his chin. The replies to Megan are written with clearly smaller font.]&lt;br /&gt;
:Megan: We don't have sprinklers or inert gas systems. When a datacenter catches fire, we just rope it off and rebuild one town over.&lt;br /&gt;
:Hairy: Makes sense.&lt;br /&gt;
:Cueball: I wonder if the rope is really necessary.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring Hairy]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Comics featuring Science Girl]]&lt;br /&gt;
[[Category:Computers]]&lt;br /&gt;
[[Category:Fiction]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1849:_Decades&amp;diff=141316</id>
		<title>1849: Decades</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1849:_Decades&amp;diff=141316"/>
				<updated>2017-06-13T23:37:44Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1849&lt;br /&gt;
| date      = June 12, 2017&lt;br /&gt;
| title     = Decades&lt;br /&gt;
| image     = decades.png&lt;br /&gt;
| titletext = In the 90s, our variety radio station used the tagline &amp;quot;the best music of the 70s, 80s, and 90s.&amp;quot; After 2000, they switched to &amp;quot;the best music of the 80s, 90s, and today.&amp;quot; I figured they'd change again in 2010, but it's 2017 and they're still saying &amp;quot;80s, 90s, and today.&amp;quot; I hope radio survives long enough for us to find out how they deal with the 2020s.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
&lt;br /&gt;
This comic shows, by use of a timeline, an interesting phenomenon where music, fashion, movies and culture created between the years 2000 and 2020 are not commonly grouped into the decade in which they were produced like previous decades. The comic asserts the reason for this is the lack of a single clear term to describe these decades, stating that the term &amp;quot;{{w|2000s}}&amp;quot; is ambiguous (as it could refer to the decade, century or millennium as a whole) and the terms &amp;quot;{{w|Aughts}}&amp;quot; and &amp;quot;Teens&amp;quot; never became the widely accepted terms for these decades. &lt;br /&gt;
&lt;br /&gt;
The time-line in the comic stretches into the future (as of the time of publication) and attempts to name the 2020-2029 decade as the 20s, but does so with an uncertain question mark, presumably because it's (presently) an open question whether this dating convention will be reinstated after a 20-year pause. As the comic points out, common vernacular has managed to operate without clear terms for that grouping for 17 years, and that may have left enough of a mark on our thinking that we'll simply continue to operate in that way. There's an argument to be made grouping culture by decades is fairly arbitrary and not essential in cultural discussions. It should also be considered that that &amp;quot;the twenties&amp;quot; is still occasionally used to refer to the 1920's, and so reusing it to refer to the 2020's could be a source of confusion. It's not impossible that decade-based grouping will fall out of favor all together in the 21st century.&lt;br /&gt;
&lt;br /&gt;
It should perhaps also be noted that culture (particularly when associated with young people) in the 2000's and 2010's is often termed &amp;quot;{{w|Millennials#Cultural_identity|millennial culture}}&amp;quot;, although {{tvtropes|TheGenerationGap|this term frequently comes with negative connotations.}}&lt;br /&gt;
&lt;br /&gt;
The title text talks about Randall's local radio station. Until the 90s, they were able to use clear decade groupings to classify music. Once the year 2000 hit, they began saying &amp;quot;today&amp;quot;, avoiding aughts or 2000s, which, as Randall says, never gained popular support. Instead of adopting a term for the 2010's, they simply continued to use &amp;quot;today&amp;quot; to refer to everything after the 1990's (this practice has been fairly common on American radio stations). Randall expresses interest in what change they will include in the 2020s (changing to the 20s or continuing their format), but includes a comedic jab at radio, suggesting that the medium might not last that long. The increasing speed and ubiquity of the internet, combined with compact digital music storage, has made radio programming increasingly obsolete in the United States and other wealthy countries. That said the joke is still based on exaggeration to an extent, since commercial radio is unlikely to disappear entirely in the next three years, but is likely to become less and less viable as an industry over time and what remains or springs from the ashes will likely shift radically in its format and delivery.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[A timeline across the top of the box marks decades from 1960 to 2030, the labels are above the line and the ticks marking each decade are below.]&lt;br /&gt;
&lt;br /&gt;
:[Label: 1960]&lt;br /&gt;
:60s Music; 60s Fashion; 60s Movies; 60s Culture&lt;br /&gt;
&lt;br /&gt;
:[Label: 1970]&lt;br /&gt;
:70s Music; 70s Fashion; 70s Movies; 70s Culture&lt;br /&gt;
&lt;br /&gt;
:[Label: 1980]&lt;br /&gt;
:80s Music; 80s Fashion; 80s Movies; 80s Culture&lt;br /&gt;
&lt;br /&gt;
:[Label: 1990]&lt;br /&gt;
:90s Music; 90s Fashion; 90s Movies; 90s Culture&lt;br /&gt;
&lt;br /&gt;
:[Label: 2000 and 2010]&lt;br /&gt;
:[Items grouped over two decades.]&lt;br /&gt;
:Fashion; Culture; Music; Movies&lt;br /&gt;
&lt;br /&gt;
:[Label: 2020]&lt;br /&gt;
:[The text is in light grey font.]&lt;br /&gt;
:&amp;lt;font color=&amp;quot;grey&amp;quot;&amp;gt;20s Music?; 20s Fashion?; 20s Movies?; 20s Culture?&amp;lt;/font&amp;gt;&lt;br /&gt;
&lt;br /&gt;
:[Label: 2030]&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:] &lt;br /&gt;
:It's weird how for 20 years we stopped grouping our cultural memories by decade because &amp;quot;2000s&amp;quot; is ambiguous and and &amp;quot;Aughts&amp;quot; and &amp;quot;Teens&amp;quot; never really stuck.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*Randall has by mistake, written &amp;quot;and and aughts&amp;quot; in the caption for this comic, instead of &amp;quot;and aughts&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Timelines]]&lt;br /&gt;
[[Category:Time]]&lt;br /&gt;
[[Category:Music]]&lt;br /&gt;
[[Category:Language]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1310:_Goldbach_Conjectures&amp;diff=141097</id>
		<title>1310: Goldbach Conjectures</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1310:_Goldbach_Conjectures&amp;diff=141097"/>
				<updated>2017-06-09T23:39:51Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */ Citation added&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1310&lt;br /&gt;
| date      = December 30, 2013&lt;br /&gt;
| title     = Goldbach Conjectures&lt;br /&gt;
| image     = goldbach_conjectures.png&lt;br /&gt;
| titletext = The weak twin primes conjecture states that there are infinitely many pairs of primes. The strong twin primes conjecture states that every prime p has a twin prime (p+2), although (p+2) may not look prime at first. The tautological prime conjecture states that the tautological prime conjecture is true.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
In mathematics, a pair of related conjectures may be described as &amp;quot;strong&amp;quot; and &amp;quot;weak&amp;quot; (or often, a normal statement and a &amp;quot;weak&amp;quot; one). A strong conjecture, if true, can be used to easily prove the weaker one, but not vice versa (i.e. if the weak statement is true, that alone isn't enough to prove that the strong one is also true). Conversely, if the weak conjecture is false, that is enough to prove the stronger one false as well, but not vice versa. Weak conjectures are often easier to prove than related strong ones.&lt;br /&gt;
&lt;br /&gt;
Goldbach's {{w|Goldbach's weak conjecture|weak}} and {{w|Goldbach's conjecture|strong}} conjectures are a pair of real, unsolved problems relating to {{w|prime number}}s (a number with exactly two positive divisors, 1 and itself). The comic states these under the labels &amp;quot;weak&amp;quot; and &amp;quot;strong&amp;quot;.&lt;br /&gt;
* Goldbach's weak conjecture says that every odd number above 5 can be written as the sum of three prime numbers. A computer-aided proof of this was completed in 2013, but it is not yet clear whether the proof has been accepted as correct.&lt;br /&gt;
* Goldbach's strong conjecture (more often, simply &amp;quot;Goldbach's conjecture&amp;quot;) says that every even number above 2 can be written as the sum of two prime numbers. If true, this would automatically make the weak conjecture true as well, because every odd number above 5 can be written as an even number above 2 (equal to two primes), plus 3 (the third prime).&lt;br /&gt;
&lt;br /&gt;
Randall's further conjectures extend this to a whole series of progressively &amp;quot;weaker&amp;quot; and &amp;quot;stronger&amp;quot; statements. His weak conjectures are so weak that they are obviously true; his strong conjectures are so restrictive that they are obviously false. However, for the most part, they really do maintain the weak-strong relationship.&lt;br /&gt;
* The &amp;quot;very strong&amp;quot; conjecture says that every odd number is prime. This is false, but if it ''were'' true, it would make Goldbach's (strong) conjecture true as well, because every even number can be written as the sum of two odd numbers (which, by this &amp;quot;conjecture&amp;quot;, are prime).&lt;br /&gt;
* The &amp;quot;extremely strong&amp;quot; conjecture says that numbers stop at 7. {{w|8|This is false}}, but if it ''were'' true, it might make the above conjecture true as well: 9 is the first odd composite number, so stopping at 7 would eliminate all odd composite numbers. (1 is neither prime nor composite, but it ''has'' been counted as a prime number in the past. Randall may have meant 1 to be an unspoken exception, or he may be returning to the older definition that included 1 as prime.)&lt;br /&gt;
* In the other direction, the &amp;quot;very weak&amp;quot; conjecture says that every number above 7 can be written as the sum of two other numbers. This is true, but as it says nothing about primes, it isn't enough to prove Goldbach's weak conjecture. The weak conjecture being true would automatically make this one true, though (if we didn't already know it was true).&lt;br /&gt;
* The &amp;quot;extremely weak&amp;quot; conjecture says that &amp;quot;numbers just keep going&amp;quot;. This is true, but it may not actually be implied by the above conjectures. Those say that numbers above 7 have certain properties, without ''requiring'' that such numbers exist. This may seem like a nitpicky point, but mathematicians love those; also it causes problems, because the &amp;quot;extremely strong&amp;quot; and &amp;quot;extremely weak&amp;quot; conjectures contradict each other. If the other conjectures were rewritten to say &amp;quot;these numbers exist, ''and'' have these properties&amp;quot;, then they would imply this &amp;quot;extremely weak&amp;quot; conjecture, but then the &amp;quot;extremely strong&amp;quot; one would have to be stricken off.&lt;br /&gt;
&lt;br /&gt;
The title text gives the same treatment to the {{w|Twin prime|twin prime conjecture}}, which says that there are infinitely many pairs of primes ''where one is 2 more than the other'' (e.g. 3 and 5). The title text adds a &amp;quot;weak&amp;quot; conjecture, according to which there are simply infinitely many pairs of primes (with no mention of distance between them). This is true; {{w|Euclid's theorem}} says that there are an infinite number of primes, and so you can simply pick any two (e.g. 5 and 13) and call them a pair.&lt;br /&gt;
&lt;br /&gt;
It also adds a &amp;quot;strong&amp;quot; conjecture where ''every'' prime is now a twin prime. This is easily proven false; for example, 23 is prime, but 25 is not. However, Randall adds a humorous {{w|hedge (linguistics)|hedge}} that some prime numbers &amp;quot;may not look prime at first&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
Lastly, the tautological prime conjecture states that it itself is true, while making no statement about primes. It is not technically a {{w|tautology}} but more of a plain assertion. Randall has mentioned tautologies before in [[703: Honor Societies]].&lt;br /&gt;
&lt;br /&gt;
===History of Goldbach's conjecture===&lt;br /&gt;
Mathematician {{w|Christian Goldbach}} wrote a form of his conjecture (the &amp;quot;strong&amp;quot; one of the comic) in a letter to the famous {{w|Leonhard Euler}} in 1742. Euler replied that he considered it certainly true, but that he could not prove it.&lt;br /&gt;
&lt;br /&gt;
Mathematicians have been solving related problems that are &amp;quot;weaker&amp;quot; than Goldbach's weak conjecture, and working towards &amp;quot;stronger&amp;quot; ones. For example, in 1937 the weak conjecture was proven for odd numbers greater than 3&amp;lt;sup&amp;gt;14348907&amp;lt;/sup&amp;gt;. In 1995 a version was proven based on the sum of no more than seven prime numbers, and in 2012 the ceiling was lowered to five primes. In 2013 the weak conjecture was claimed proven for numbers greater than 10&amp;lt;sup&amp;gt;30&amp;lt;/sup&amp;gt;, while all numbers below 10&amp;lt;sup&amp;gt;30&amp;lt;/sup&amp;gt; have been verified by supercomputer to satisfy the conjecture; these together imply that the weak conjecture is true, although there is no ''general'' proof of it for all numbers. Goldbach's strong conjecture remains unsolved.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[The title of the comic is also written in a large font in the center of the comic. Above and then to the left and right are six boxes, each box having a caption in bold font. The weak boxes begin above and to the left of the title. And then moves down and left. The strong does the same but to the right. Starting with the title, and then taking each row from top to bottom, left to right:]&lt;br /&gt;
:'''Goldbach Conjectures'''&lt;br /&gt;
&lt;br /&gt;
:'''Weak:'''&lt;br /&gt;
:Every odd number greater than 5 is the sum of three primes&lt;br /&gt;
&lt;br /&gt;
:'''Strong:'''&lt;br /&gt;
:Every even number greater than 2 is the sum of two primes&lt;br /&gt;
&lt;br /&gt;
:'''Very weak:'''&lt;br /&gt;
:Every number greater than 7 is the sum of two other numbers&lt;br /&gt;
&lt;br /&gt;
:'''Very strong:'''&lt;br /&gt;
:Every odd number is prime&lt;br /&gt;
&lt;br /&gt;
:'''Extremely weak:'''&lt;br /&gt;
:Numbers just ''keep going''&lt;br /&gt;
&lt;br /&gt;
:'''Extremely strong:'''&lt;br /&gt;
:There are no numbers above 7&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Charts]]&lt;br /&gt;
[[Category:Math]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1843:_Opening_Crawl&amp;diff=140502</id>
		<title>1843: Opening Crawl</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1843:_Opening_Crawl&amp;diff=140502"/>
				<updated>2017-05-29T23:55:37Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1843&lt;br /&gt;
| date      = May 29, 2017&lt;br /&gt;
| title     = Opening Crawl&lt;br /&gt;
| image     = opening_crawl.png&lt;br /&gt;
| titletext = Using a classic Timothy Zahn EU/Legends novel is bad enough, but at least the style and setting aren't too far off. If you really want to mess with people, try using Splinter of the Mind's Eye.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|I have a bad feeling about this.}}&lt;br /&gt;
&lt;br /&gt;
Each &amp;lt;span style=&amp;quot;border-bottom:1px dotted&amp;quot; title=&amp;quot;thus excluding spin-offs like Rogue One&amp;quot;&amp;gt;episodic&amp;lt;/span&amp;gt; {{w|Star Wars}} film begins with an &amp;quot;{{tvtropes|OpeningScroll|opening crawl}}&amp;quot; giving the audience some of the backstory, which often reads like the prologue of a novel.  &lt;br /&gt;
&lt;br /&gt;
[[Randall]] wants to reverse this by projecting the text of a Star Wars novel and see how long this can be continued before viewers realize it is a prank.&lt;br /&gt;
&lt;br /&gt;
The title text compares different Star Wars novels' style, remarking on how well suited they would be for this prank.&lt;br /&gt;
&lt;br /&gt;
{{w|Timothy Zahn}} is a science fiction writer who has written and contributed to many novels and comics [http://starwars.wikia.com/wiki/Timothy_Zahn#Works] in the {{w|Star Wars expanded universe}}. The [http://www.mustreading.net/Thrawn_Trilogy_03.html text in the comic] is the first five paragraphs from the book ''[http://starwars.wikia.com/wiki/The_Last_Command The Last Command]''. The characters mentioned are [http://starwars.wikia.com/wiki/Mitth%27raw%27nuruodo Grand Admiral Thrawn], the primary antagonist of the ''Thrawn Trilogy'', and [http://starwars.wikia.com/wiki/Pellaeon Gilad Pellaeon], who serves as a {{w|Dr. Watson}}-type companion to Thrawn throughout much of the trilogy.&lt;br /&gt;
&lt;br /&gt;
''[http://starwars.wikia.com/wiki/Splinter_of_the_Mind%27s_Eye Splinter of the Mind's Eye]'' was an early Star Wars novel written before the original film was expanded to a trilogy (and then expanded some more), so it contains multiple aborted subplots which can make it very confusing for a fan who has seen the later works.&lt;br /&gt;
&lt;br /&gt;
The term &amp;quot;EU&amp;quot; refers to &amp;quot;Expanded Universe&amp;quot;, which was the term for the corpus of non-cinematic ''Star Wars'' content before ''Star Wars'' was acquired by {{w|Disney}}. Not wanting to be constrained by previous canon, Disney declared all &amp;quot;Expanded Universe&amp;quot; content to be non-canonical to all future movies, and re-branded the EU as &amp;quot;Legends&amp;quot; to take place in its own alternate continuity.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[On a black background with many stars is five yellow blocks of text that recedes towards a black section at the back of the panel. The last block cannot be read, but it is (almost) possible to read the second block of text at the back. The bottom line of the last text block is cut off through the middle of the letters.]&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;All systems show battle ready, Admiral,&amp;quot; the comm officer reported from the portside crew pit. &amp;quot;The task force is beginning to check in.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;Very good, Lieutenant,&amp;quot; Grand Admiral Thrawn nodded. &amp;quot;Inform me when all have done so. Captain Pellaeon?&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;Sir?&amp;quot; Pellaeon said, searching his superior's face for the stress the Grand Admiral must be feeling. The stress he himself was certainly feeling. This was not just another tactical strike against the Rebellion, after all—not a minor shipping raid or even a complex but straightforward hit-and-fade against some insignificant planetary base. After nearly a month of frenzied preparations, Thrawn's master campaign for the Empire's final victory was about to be launched.&lt;br /&gt;
&lt;br /&gt;
:But if the Grand Admiral was feeling any tension, he was keeping it to himself. &amp;quot;Begin the countdown,&amp;quot; he told &lt;br /&gt;
:[Cut off through the middle and at the end]: Pellaeon, his voice as calm as if he were ordering&lt;br /&gt;
&lt;br /&gt;
:[Caption beneath the panel:] &lt;br /&gt;
:Movie theater projection booth prank: see how many pages of a Star Wars novel you can get people to read before they figure out there's no movie coming after it.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*Some of the crawl in the comic is unreadable. But since this is text from a real book [http://www.mustreading.net/Thrawn_Trilogy_03.html the full text] can be found on-line.&lt;br /&gt;
*Here is what would have been readable up to this moment of the &amp;quot;film&amp;quot;, if the text was crawling by:&lt;br /&gt;
:Gliding through the blackness of deep space, the Imperial Star Destroyer Chimaera pointed its mighty arrowhead shape toward the dim star of its target system, three thousandths of a light-year away. And prepared itself for war.&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;All systems show battle ready, Admiral,&amp;quot; the comm officer reported from the portside crew pit. &amp;quot;The task force is beginning to check in.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;Very good, Lieutenant,&amp;quot; Grand Admiral Thrawn nodded. &amp;quot;Inform me when all have done so. Captain Pellaeon?&amp;quot;&lt;br /&gt;
&lt;br /&gt;
:&amp;quot;Sir?&amp;quot; Pellaeon said, searching his superior's face for the stress the Grand Admiral must be feeling. The stress he himself was certainly feeling. This was not just another tactical strike against the Rebellion, after all—not a minor shipping raid or even a complex but straightforward hit-and-fade against some insignificant planetary base. After nearly a month of frenzied preparations, Thrawn's master campaign for the Empire's final victory was about to be launched.&lt;br /&gt;
&lt;br /&gt;
:But if the Grand Admiral was feeling any tension, he was keeping it to himself. &amp;quot;Begin the countdown,&amp;quot; he told Pellaeon, his voice as calm as if he were ordering dinner.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Star Wars]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1840:_Genetic_Testing_Results&amp;diff=140157</id>
		<title>1840: Genetic Testing Results</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1840:_Genetic_Testing_Results&amp;diff=140157"/>
				<updated>2017-05-22T18:12:47Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1840&lt;br /&gt;
| date      = May 22, 2017&lt;br /&gt;
| title     = Genetic Testing Results&lt;br /&gt;
| image     = genetic_testing_results.png&lt;br /&gt;
| titletext = That's very exciting! The bad news is that it's a risk factor for a lot of things.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Some paragraphs are missing so that it becomes as long as the other explanations.}}&lt;br /&gt;
Ponytail [[1839|continues Cueball's medical checkup]] with a genetic test.&lt;br /&gt;
&lt;br /&gt;
{{w|Genetic test}}s show people congenital diseases that they might be at risk for and give them insight into their ancestry. In this case, the genetic results are extremely obvious: His genes are part of a long line of genes stretching back to some of the earliest life forms to have genes. This information is, on top of being obvious, so vague as to be useless for medical purposes.&lt;br /&gt;
&lt;br /&gt;
A similar joke was made in the title text of [[674|#674: Natural Parenting]]: &amp;quot;On one hand, every single one of my ancestors going back billions of years has managed to figure [having kids] out. On the other hand, that's the mother of all sampling biases.&amp;quot;&lt;br /&gt;
&lt;br /&gt;
In epidemiology, a risk factor is a variable associated with an increased risk of disease or infection. The title text says that this is a risk factor because being a living human being is, trivially, associated with every disease that could possibly afflict human beings.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is seated on an medical examination table while Ponytail stands dressed in a doctor's coat holding a file in her right hand.]&lt;br /&gt;
:Ponytail: Your genetic test results are back. Apparently you're part of an unbroken lineage stretching back billions of years to the early Earth!&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1792:_Bird/Plane/Superman&amp;diff=140080</id>
		<title>1792: Bird/Plane/Superman</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1792:_Bird/Plane/Superman&amp;diff=140080"/>
				<updated>2017-05-20T04:45:11Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Table */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1792&lt;br /&gt;
| date      = January 30, 2017&lt;br /&gt;
| title     = Bird/Plane/Superman&lt;br /&gt;
| image     = bird_plane_superman.png&lt;br /&gt;
| titletext = You can apply special translucent films to your windows to help keep birds/Superman from accidentally flying into them.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This comic is a logical comparison of observations to resolve the [http://www.imdb.com/title/tt0034247/quotes?item=qt0317455 classic Superman catchphrase] of comic book bystanders: &amp;quot;Look, up in the sky... It's a {{w|bird}}!... It's a {{w|Airplane|plane}}!... It's {{w|Superman}}!&amp;quot;, hence the title. Superman, a character originally created for comic books in the 1930's, is an alien with superpowers, including the power of unaided flight; hence the catchphrase exclaiming peoples' amazement. &lt;br /&gt;
&lt;br /&gt;
At the correct distance both birds, planes and the fictive Superman could be mistaken for each other. So this comic aims to help people identify the airborne object by listing on which properties they are alike and on which they are different. This problem was also mentioned in the title text of [[1633: Possible Undiscovered Planets]], putting Superman near the bird/plane boundary explaining why all this confusion has arisen.&lt;br /&gt;
&lt;br /&gt;
The observations compared range from the mundane to the bizarre and they are listed and explained below in the [[#Table|table]]. Here some highlights are mentioned, but for all these there are much more detail below.&lt;br /&gt;
&lt;br /&gt;
Some of the mundane observations are that birds don't fly around with people, while Superman can do it, and planes are meant for it;  and that the latter two are new &amp;quot;inventions&amp;quot;, whereas birds have flown around for millions of years. &lt;br /&gt;
&lt;br /&gt;
Interestingly enough there are actually two observations that have check mark for all three; the first being that there are enthusiasts for all three different flying objects. And these will obsess over small color details in otherwise similar looking objects. The other common thing is that they all may have sex in midair. The possibility of that happening for the all three are discussed in the table. &lt;br /&gt;
&lt;br /&gt;
Three observations only counts for birds, where all those that do not count for birds do count for both planes and superman. Two of these relates to the fact that birds are eaten by cats and humans, the last is that birds flap their wings to fly, the others have other means of flight. There are observations that rules out only planes or only superman, but none that rules out only one of them at the same time as birds are ruled out.&lt;br /&gt;
&lt;br /&gt;
There are also three direct jokes towards the bottom. The first is that {{w|David Attenborough}} may also have observed Superman's mating habits just like he has with birds in the documentary series {{w|The Life of Birds}}. The second is that not only birds poop in flight, but that Superman could and would also do so. And the third (and also final observation) is that not only birds chase insects to eat them, but Superman also chases them... though only when he is bored. These last three observations have that in common that the planes are left out of all of them, and the joke is always on Superman. As it has been before in [[1384: Krypton]] and [[1394: Superm*n]] (released just ten comics apart).&lt;br /&gt;
&lt;br /&gt;
The title text refers to black stickers (decals) in the shape of an easily recognizable predatory bird, like {{w|falcons}} to enhance the visibility of clear glass windows or doors and scare smaller birds away before they crash into the window. This may actually not work very well according to this article: [https://www.allaboutbirds.org/why-birds-hit-windows-and-how-you-can-help-prevent-it/ Why Birds Hit Windows], where a falcon decal is also shown. But they are meant to warn birds away and according to this comic they could also prevent Superman from flying through your window (and thus also stop him from possibly just continue through the building). They are not known to affect the risk of airplanes flying into the building.&lt;br /&gt;
&lt;br /&gt;
===Table===&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
!style=&amp;quot;width: style=&amp;quot;width: 55%;&amp;quot;| !!style=&amp;quot;width: style=&amp;quot;width: 15%;&amp;quot;| Bird !!style=&amp;quot;width: style=&amp;quot;width: 15%;&amp;quot;| Plane !! Superman &lt;br /&gt;
|-&lt;br /&gt;
!colspan=4| Explanation&lt;br /&gt;
|-&lt;br /&gt;
! Carries people || || ✓ || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Some birds are capable of flying off while carrying a small human away, but this happens extremely rarely (although hoax stories are often reported).  Of course an {{w|Ostrich}} can easily carry a human; they have done so often in arranged {{w|Ostrich#Racing|races}}. But as they cannot fly (with or without humans on their back), and this comic is about recognizing objects in the air, this will not affect the check mark!&amp;lt;br&amp;gt;&amp;lt;br&amp;gt; Most planes are specifically designed to carry human passengers, although many are cargo planes with humans only acting as crew, and autonomous drones without humans also exist. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman often carries other people with him, such as his {{w|Lois Lane|girlfriend}}, rescued victims or the various villains that people need to be rescued from.&lt;br /&gt;
|-&lt;br /&gt;
! Often flies in groups || ✓ || ✓ || &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Many types of birds fly in flocks, particularly during long-range {{w|Bird migration|migrations}}. Some birds often fly in the {{w|V formation}} which has also been {{w|V_formation#Military_flight_missions|copied by planes}}. This formation has been used at least twice in xkcd in [[1440: Geese]] and recently in [[1729: Migrating Geese]] (notice the similarity in number of that bird comic compared to the one for this comic).&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Planes sometimes fly in {{w|Formation flying|group formation}}, particularly when engaged in military operations where mutual support is tactically useful (or when conducting practice maneuvers for such operations). Though the people who would mistake those planes for birds will mainly see this at {{w|Air show|air shows}}. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman is a unique person, and thus does not fly in groups of Supermen. While Superman occasionally operates alongside other flying superheroes, and in some stories is duplicated or split into multiple beings, Randall apparently considers these circumstances too unusual to meet the &amp;quot;often&amp;quot; qualifier.&lt;br /&gt;
|-&lt;br /&gt;
! Created in 20&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt; century || || ✓ || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Birds evolved from dinosaurs, appearing as early as the Late Jurassic period, roughly 150 million years ago. That birds evolved from dinosaur who also had wings with feathers before they evolved on to becoming birds has often been referenced by Randall in comics like [[1104: Feathers]], [[1211: Birds and Dinosaurs]] and the title texts of [[867: Herpetology]] and [[1527: Humans]]&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;The {{w|Wright_Flyer#Flight_trials_at_Kitty_Hawk|first successful flight}} of a powered heavier-than-air craft took place on December 17, 1903 and was performed by the {{w|Wright brothers}}. There are several other claims for the first such flight, for instance {{w|Alberto_Santos-Dumont#Heavier-than-air_craft|Alberto Santos-Dumont}} from Brazil [https://youtu.be/N_qXm9HY9Ro?t=2156 was given a spot] at the {{w|2016 Summer Olympics opening ceremony|opening ceremony}} of the {{w|2016 Summer Olympics|Rio 2016 Olympic Games}}.&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman first appeared in {{w|Action Comics 1|''Action Comics'' #1}}, published in June 1938.&lt;br /&gt;
|-&lt;br /&gt;
! Uses magnetic navigation || ✓ || ✓ || &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Some types of birds use {{w|magnetoreception}} to navigate using the earth's magnetic field as a guide. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Artificial {{w|Compass#Magnetic_compass|magnetic compasses}}, along with other navigational equipment, are used by planes. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman, while possessing a {{w|Powers and abilities of Superman|plethora of super-senses/powers}}, does not appear to be particularly sensitive to {{w|magnetism}}.&lt;br /&gt;
|-&lt;br /&gt;
! Enthusiast community obsesses over small coloration details || ✓ || ✓ || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| {{w|Birdwatching|Birdwatchers}} identify bird species by a range of characteristics, including small details in the bird's color pattern which identify one species apart from another.&amp;lt;br&amp;gt;&amp;lt;br&amp;gt; Similarly, airplane hobbyists and {{w|Aircraft spotting|plane spotters}} take note of the colors of a plane's paint job and insignia. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Comics fans can similarly identify the artist and date of a depiction of Superman by the coloration and configuration of his costume and be obsessed with their favorite coloration being the canon.&lt;br /&gt;
|-&lt;br /&gt;
! Preyed on by cats || ✓ || || &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| {{w|Cats}} kill several billion birds a year, often - but not always - eating them. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt; There has never been a case of a cat successfully catching and eating a plane.&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;As Superman is a fictional character the same goes for him, but also in the comics he has never been eaten by a cat, although he has been [http://www.themarysue.com/wp-content/uploads/2011/03/power-girl-22.jpg devoured by a dinosaur] although that (probably{{Citation needed}}) did not kill him...&lt;br /&gt;
|-&lt;br /&gt;
! Occasional mid-air sex || ✓ || ✓ || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Almost no bird species have sex in flight. Hummingbirds, for example, engage in courting behavior which one might falsely identify as sex (explained in this article [http://animals.howstuffworks.com/birds/hummingbird-sex1.htm Do hummingbirds have sex in midair?]). This article [http://www.livescience.com/38379-animal-sex-bird-sex.html Animal Sex: How Birds Do It] explains how birds in general have sex. However, this article [http://www.commonswift.org/Aerial-mating.html Aerial mating] claims that the common swift (Apus Apus) sometimes engages in mid-air sex, an act presumably caught on video [https://vimeo.com/78453839 here].&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;{{w|Mile high club|Mid-air sex}} involving planes usually involves passengers (and potentially air crew), not the plane itself.  However, this could also be a metaphorical reference to {{w|Aerial refueling|in-flight refueling}} (such as the depiction, set to romantic music, in [https://www.youtube.com/watch?v=Qs7EikHQGlA the opening scene] of the movie ''{{w|Dr. Strangelove}}'', a movie Randall has referenced before for instance in [http://www.explainxkcd.com/wiki/images/2/21/1608_1020x1083y_Torpedoes_two_steps_above_Runner_with_Beret_Guy.png this scene] from [[1608: Hoverboard]]) It could also refer to [http://avstop.com/news/plantcity.html this incident] where one plane landed atop another in mid-air. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;As for Superman, there have been occasional moments in the comics which indicate or at least imply that he sometimes engages in mid-air sex.{{Citation needed}}&lt;br /&gt;
|-&lt;br /&gt;
! Eaten during seasonal feasts || ✓ || || &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| {{w|Turkey (bird)|Turkeys}}, a type of bird, are eaten by Americans during {{w|Thanksgiving}}, a &amp;quot;seasonal feast&amp;quot; held on the fourth Thursday of November of each year. Britons eat Turkey or {{w|Goose}} at {{w|Christmas}}, in other countries it may be {{w|ducks}} instead.&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;It is unlikely that normal humans would eat a plane, however it has been done by {{w|Michel Lotito}} who has digested an entire {{w|Cessna 150|Cessna}} aircraft. However he used two years to consume the plane, so although he may have eaten some parts during holidays, he did not do it because there was a seasonal feast.&amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman is too strong and &amp;quot;made of steel&amp;quot; for him to let any human eat him. But as also mentioned above he has been [http://www.themarysue.com/wp-content/uploads/2011/03/power-girl-22.jpg devoured by a dinosaur] although that probably did not kill him... Referring back to the possible sex Superman has had in flight, it seems he is able to have sex with a human. Although the slang ''{{w|Cunnilingus|eat me}}'' (link NSFW), usually mean the man eating the woman,[http://www.urbandictionary.com/define.php?term=eat%20me it can also be used] the other way around. In this case Superman could have had holiday-sex with his girlfriend, where she ate him.&lt;br /&gt;
|-&lt;br /&gt;
! Propelled by flapping || ✓ || || &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Birds fly by flapping their wings. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Planes have fixed wings, and fly by maintaining forward velocity and exploiting the aerodynamic effects of air flowing over the upper and lower wing surfaces, which are shaped and angled to produce lift. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman flies using superpowers which require neither wings nor flapping.&lt;br /&gt;
|-&lt;br /&gt;
! Sometimes loses ability to fly, needs to sunbathe to regain it || ✓ || || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Birds can &amp;quot;lose&amp;quot; the ability to fly, if their wings are weighed down by water from swimming. One way for birds to dry out their wings is to [http://birding.about.com/od/birdbehavior/a/Bird-Sunning.htm sunbathe]. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt; An airplane can lose its ability to fly, but no issues occurring in modern aircraft can be fixed by sunbathing, except in some {{w|Solar Impulse|experimental solar-powered aircraft}}. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;As for Superman, he is at risk of losing his superpowers, including flight, with prolonged exposure to {{w|Kryptonite}}, which makes him weak. Also the rays from the sun at his home planet {{w|Krypton (comics)|Krypton}} can {{w|Superman_II#Plot|remove his super powers}} as it happened in {{w|Superman II}}. Superman's ability to fly is a superpower caused by &amp;quot;electromagnetic radiation from the rays of a yellow sun&amp;quot;, so he could regain his strength and superhuman abilities through sunbathing in the {{w|Sun|Sun's}} light here on Earth. Which was how he got his super powers in the first place.&lt;br /&gt;
|-&lt;br /&gt;
! Can take a punch || || ✓ || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Many birds are small and fragile creatures, whose {{w|Bird_anatomy#Skeletal_system|bone structures}} are meant to be light in order to fly, and thus are not very durable. If a man punched, say, a {{w|pigeon}}, he could probably break/dislocate most of its bones, either killing it immediately or leaving it in a state from which it will probably never ever recover on its own. However, there are definitely some big, {{w|flightless birds}} that could take a punch from a human such as ostriches and {{w|emus}}, but since both are large creatures that would probably react by fighting back, it would not be wise to try. Also Randall is (again) plainly ignoring this type of birds as they cannot fly and this comic is about making mistakes regarding things flying through the air (typically far enough away from the observer to mistake a pigeon for a plane). &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Planes are usually massive, or at least big enough to carry a human, and have to be made of materials durable enough to withstand hurtling through the sky at hundreds of miles an hour reliably on a regular basis. You could definitely punch one safely. (Meaning safe for the plane, not your hand.) &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;One of Superman's (the {{w|Man of Steel (film)|Man of Steel}}) trademark abilities is his near indestructibility; a punch from any regular human would not hurt him, but again hurt the hand.&lt;br /&gt;
|-&lt;br /&gt;
! Mating behavior often observed by a hidden David Attenborough || ✓ || || Not that we know of &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| {{w|David Attenborough}} is an English broadcaster and naturalist, who produced a documentary series ''{{w|The Life of Birds}}''. Included in the series is an episode entitled &amp;quot;Finding Partners&amp;quot;, which discussed {{w|Bird#Breeding|mating rituals of birds}}. That these can be very strange has been mentioned in the title text of [[1747: Spider Paleontology]], of course in relation to Dinosaur behavior. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Planes are dead inanimate objects with no mating behavior. However, referring back to the observations made under the ''Occasional mid-air sex'' explanation it could be discussed if this was mating behavior. Also there are movies like {{w|Planes (film)|Planes}} and it's {{w|Planes: Fire &amp;amp; Rescue|sequel}} has living planes, which could mate. But Randall may know for sure that Attenborough is not interested in those. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;The comic states that we don't know for sure if Attenborough has observed Superman's mating behavior. As Superman doesn't exist{{Citation needed}} Attenborough has not seen Superman in reality (which would lead to a &amp;quot;No&amp;quot; response), but maybe Attenborough has watched all the movies in which Superman courts {{w|Lois Lane}} just to observe Superman's (made up) mating behavior (which would lead to a &amp;quot;Yes&amp;quot; response). Since we do not know Attenborough's habits, this leads to Randall giving the &amp;quot;Not that we know of&amp;quot; response.&lt;br /&gt;
|-&lt;br /&gt;
! Capable of intentionally releasing poop mid-flight || ✓ || || ✓ &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Birds often poop during flight, often enough that people regularly get hit in the head by the poop, which has caused the unlucky people to come up with the [http://thepetwiki.com/wiki/Pets_and_Superstitions superstition] that it brings good luck. For birds it is just economical to shed excess mass when they are going to fly, and many birds poop just at take off. But on long flights it the best use of resources to not carry extra weight along, that increases their efficiency. Unlike {{w|mammals}} who pee {{w|urea}}, {{w|Bird#Excretory_system|bird poop}} is both pee and feces as birds only have one hole, a {{w|cloaca}}, and the black poop is surrounded by their pee which is the white stuff containing {{w|uric acid}}. Not peeing lots of water out reduces their water loss.  &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Some planes may be able to intentionally purge their septic tanks mid-flight, depending on the design of the waste interlocks, especially assuming the controls are inside the cockpit or cabin.  As the TV show ''MythBusters'' has shown, a leaky septic disposal system can unintentionally lose liquid waste and cause a &amp;quot;blue ice&amp;quot; sighting on the ground. This is, however, not the planes poop and also not the plane that released it intentionally, and planes are not supposed to do this. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman, being more or less human, could be capable of pooping during flight, but this would generally result in unnecessary drycleaning bills. But he has probably never been shown to either take a leak or poop in any of the {{w|Canon (fiction)|canon}} comics, books or films{{Citation needed}}. So he may not even be able to poop! But Randall assumes he can.&lt;br /&gt;
|-&lt;br /&gt;
! Chases and eats bugs || ✓ || || Only when bored &lt;br /&gt;
|-&lt;br /&gt;
|colspan=4| Many bird species prey on insects and similar-sized animals.  &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Planes often fly into and kill insects (as well as birds, and sometimes humans), but this is unintentional and doesn't provide them with nutritional value, and they certainly do not chase them around. &amp;lt;br&amp;gt;&amp;lt;br&amp;gt;Superman is not known for eating insects, but Randall implies that he does sometimes, but only when he's bored. This could be interpreted as if he then tries to avoid his boredom by chasing the bugs intensionally, but why also eat them then? So it would probably rather happen because if you fly around while bored you might yawn at the wrong time and {{w|There Was an Old Lady Who Swallowed a Fly|swallow a fly}}, just like when riding on a bike or any other relatively fast but open vehicle. &lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! !! Bird !! Plane !! Superman&lt;br /&gt;
|-&lt;br /&gt;
| Carries people || || ✓ || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Often flies in groups || ✓ || ✓ ||&lt;br /&gt;
|-&lt;br /&gt;
| Created in 20&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt; century || || ✓ || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Uses magnetic navigation || ✓ || ✓ ||&lt;br /&gt;
|-&lt;br /&gt;
| Enthusiast community obsesses over small coloration details || ✓ || ✓ || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Preyed on by cats || ✓ || ||&lt;br /&gt;
|-&lt;br /&gt;
| Occasional mid-air sex || ✓ || ✓ || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Eaten during seasonal feasts || ✓ || ||&lt;br /&gt;
|-&lt;br /&gt;
| Propelled by flapping || ✓ || ||&lt;br /&gt;
|-&lt;br /&gt;
| Sometimes loses ability to fly, needs to sunbathe to regain it || ✓ || || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Can take a punch || || ✓ || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Mating behaviour often observed by a hidden David Attenborough || ✓ || || Not that we know of&lt;br /&gt;
|-&lt;br /&gt;
| Capable of intentionally releasing poop mid-flight || ✓ || || ✓&lt;br /&gt;
|-&lt;br /&gt;
| Chases and eats bugs || ✓ || || Only when bored&lt;br /&gt;
|-&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Charts]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Comics featuring real people]]&lt;br /&gt;
[[Category:Sex]]&lt;br /&gt;
[[Category:Food]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1625:_Substitutions_2&amp;diff=140073</id>
		<title>1625: Substitutions 2</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1625:_Substitutions_2&amp;diff=140073"/>
				<updated>2017-05-19T23:47:55Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Table of substitutions */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1625&lt;br /&gt;
| date      = January 4, 2016&lt;br /&gt;
| title     = Substitutions 2&lt;br /&gt;
| image     = substitutions_2.png&lt;br /&gt;
| titletext = Within a few minutes, our roads will be full of uncontrollably-swerving cars and our skies full of Amazon delivery dogs.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This is the second comic in the [[:Category:Substitution series|Substitution series]] where [[Randall]] has suggested substitutions that will make reading the news more fun. But there have been several [[:Category:Substitutions|comics using substitutions]] both before and after these ones.&lt;br /&gt;
&lt;br /&gt;
The series as of 2016:&lt;br /&gt;
*[[1288: Substitutions]] &lt;br /&gt;
*[[1625: Substitutions 2]]&lt;br /&gt;
*[[1679: Substitutions 3]]&lt;br /&gt;
&lt;br /&gt;
In this table, [[Randall]] suggests substituting several common phrases in generic news with similar or related phrases that mean something different for comical effect. Some of the replacements are {{w|synonyms}}, some are {{w|antonyms}}, and some are plain different concepts; and, even though they would (most of the time) make a grammatically correct sentence, the resulting idea would, however, often sound absurd or bizarre.&lt;br /&gt;
&lt;br /&gt;
Some of the examples might, also, mock the fact that many news contradict the actual facts or obvious results of a situation. For example, &amp;quot;[influential person] vows to do good to the world&amp;quot; would be replaced with a more usual fact &amp;quot;[influential person] probably won't do good to the world&amp;quot; - see [[#Example of sentences|example]] below with North Korean leader.&lt;br /&gt;
&lt;br /&gt;
The title text is an example of how the closing sentence of a given article or report might sound after using the substitutions in the comic.&lt;br /&gt;
:Before substitutions: Within a few '''years''', our roads will be full of '''self-driving''' cars and our skies full of Amazon delivery '''drones'''.&lt;br /&gt;
:After substitutions: Within a few '''minutes''', our roads will be full of '''uncontrollably-swerving''' cars and our skies full of Amazon delivery '''dogs'''.&lt;br /&gt;
The flying dogs could be a reference to [[1614: Kites]]. Was the first of two in a row where Amazon is mentioned in the title text (next [[1626: Judgment Day]]).&lt;br /&gt;
&lt;br /&gt;
===Table of substitutions===&lt;br /&gt;
*In this table the difference between the original and the substituted word (and the change to the sentences) will be explained.&lt;br /&gt;
**[[#Example of sentences|Example of sentences]] are given below.&lt;br /&gt;
:{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
! Original&lt;br /&gt;
! Substitution&lt;br /&gt;
! Explanation &lt;br /&gt;
|-&lt;br /&gt;
| {{w|Debate}}&lt;br /&gt;
| [https://en.wiktionary.org/wiki/dance-off Dance-off]&lt;br /&gt;
| A 'debate' is often used between political candidates, to give the voters a chance to decide who they will vote for. One of the candidates &amp;lt;!-- ''Airbenders'' (*note correct spelling*, if this was intentional and needs restoring)--&amp;gt; is often called the winner of such a debate by some degree or other of consensus. Randall is indicating that they could just as well have performed a 'dance-off' where they would dance until one of them danced better than the other, as adjudged by the viewing crowd or a panel of judges. Such a dance-off is often seen in [http://gameshows.wikia.com/wiki/Family_Dance_Off TV-shows] or [http://www.imdb.com/title/tt3024964/combined films] etc.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Autonomous car|Self driving}}&lt;br /&gt;
| Uncontrollably [https://en.wiktionary.org/wiki/swerving swerving]&lt;br /&gt;
| 'Self driving' cars were also mentioned in [[1623: 2016 Conversation Guide]], just two comics before this one where it was stated that they would come surprisingly soon (within a few minutes according to the substitutions suggested here). But until they are safe it might be better to mention them as uncontrollably swerving cars? Self-driving cars is a [[:Category:Self-driving cars|recurring topic]] on xkcd.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Poll}}&lt;br /&gt;
| {{w|Psychic reading}}&lt;br /&gt;
| A 'poll', especially regarding political issues, refers to {{w|opinion poll|opinion}} or {{w|exit poll|exit}} polls. These tend to ask a carefully selected sample (for either balance or an intended ''inbalance'', depending on the poll's neutrality) their opinions in order to extrapolate the global consensus, e.g. the future result of an {{w|election}}. This substitution is Randall's way of saying that they could just as well have used a {{w|psychic}} person to predict the result. A true psychic (if that they are) would reveal an accurate result, whilst a false one (skilled at 'cold reading' an audience) would likely wish to provide the answer that pleases those asking the question (the actual purpose of some polls), or else attempt to provide their actual 'best guess' as to future outcomes in order to improve their own legend.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Candidate}}&lt;br /&gt;
| {{w|Airbender}}&lt;br /&gt;
| A 'candidate' usually refers to a political person who represents a certain political party in an election. He would then be that party's candidate, for instance for a presidential election. 'Airbender' refers to the show {{w|Avatar: The Last Airbender}}, where there are waterbenders, earthbenders, firebenders and (at this point) a single surviving airbender, the airbender in question being a pivotal character upon whose actions the future fate of world relies.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Unmanned aerial vehicle|Drone}}&lt;br /&gt;
| {{w|Dog}}&lt;br /&gt;
| Drones can be many things, for instance a {{w|Drone (bee)|male bee}}, but as used in the title text it refers to unmanned aerial vehicles. {{w|Amazon.com|Amazon}} is about to use small drones to deliver parcels, and Randall has referred to these before (see [[1523: Microdrones]]). However, until just before the recent trend of becoming popularised as a 'toy' or professional camera platform, the term became closely associated with ''military'' drones that have been used to observe (and, more recently, fire upon) enemy forces without risking any military personnel.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Vows}} to&lt;br /&gt;
| [https://en.wiktionary.org/wiki/probably Probably] won't&lt;br /&gt;
| Vowing to do something means that you really promise to do this. But when politicians vow something, for instance, it seems to often end up becoming a forgotten promise. Hence the antonym substitution which means the opposite. From ''really will'' to ''probably won't''.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Fugitive#Terminology|At large}} (or {{w|At-large}})&lt;br /&gt;
| Very [https://en.wiktionary.org/wiki/large large]&lt;br /&gt;
| A criminal that is on the run is said to be at large (no hyphen). At-large (with hyphen) is a political designation for members of a governing body who are elected or appointed to represent the whole membership of the body, rather than a subset of that membership. Neither of these have anything to do with the physical size or &amp;quot;largeness&amp;quot; of the subject.&lt;br /&gt;
|-&lt;br /&gt;
| [https://en.wiktionary.org/wiki/successfully Successfully]&lt;br /&gt;
| [https://en.wiktionary.org/wiki/suddenly Suddenly]&lt;br /&gt;
| The two words have nothing much to do with each other except that they both begin with ''su''.&lt;br /&gt;
|-&lt;br /&gt;
| [https://en.wiktionary.org/wiki/expand Expands]&lt;br /&gt;
| [https://en.wiktionary.org/wiki/physical Physically] expands&lt;br /&gt;
| 'Expands' often refers to a physical expansion, or inflation. But it is also possible to expand on an explanation, as is done for this comic. So that would become: This explanation is being physically expanded beyond all measures.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|First degree|First }} /{{w|second degree|second }} /{{w|third degree|third-degree}}&lt;br /&gt;
| [http://da.urbandictionary.com/define.php?term=Friggin Friggin'] awful&lt;br /&gt;
| First, second and third-degree can be used in many context. It is common to think about {{w|Burn|burns}}, which can {{w|Burn#Signs_and_symptoms|range from first to fourth degree}}, where higher is worse. Also {{w|murder}} charges can range in from first to third degree in for instance the US. Here first degree murder is the worst. But it can be used for other things, like an {{w|undergraduate degree}} or {{w|postgraduate education}} for first and second degree respectively. But the substitution fits best with murder or burn, as Friggin(g) is a &amp;quot;softer&amp;quot; swear word than for instance other more commonly used four letter words. It often replaces ''fuck''. Its original meaning was a coarse word for female masturbation (see [https://en.wiktionary.org/wiki/frigging#English frigging]).&lt;br /&gt;
|-&lt;br /&gt;
| An [https://en.wiktionary.org/wiki/unknown unknown] number&lt;br /&gt;
| Like {{w|100 (number)|hundreds}}&lt;br /&gt;
| In the news, an unknown number mostly means 'probably not zero.'  It is often used in phrases like &amp;quot;an unknown number of assailants broke into a house in Munroe Heights,&amp;quot; or &amp;quot;an unknown number of people are missing&amp;quot; after a calamity of some sort. &amp;quot;Like hundreds&amp;quot; does give a different flavor.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Front-runner |Front runner}}&lt;br /&gt;
| {{w|Blade Runner}}&lt;br /&gt;
| In American politics, a 'front-runner' is a leader in an electoral race. It can also mean the front-runner in athletic events (the namesake of the political concept). Here it is generally clear who the front-runner is, whilst the political front-runner is sometimes less clear or a more subjective viewpoint. A 'blade runner' is a person who retires (kills) rogue cyborgs in the movie Blade Runner, where {{w|Harrison Ford}} plays the lead Blade Runner.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Globe|Global}}&lt;br /&gt;
| {{w|Spherical}}&lt;br /&gt;
| Global comes from globe, but means so much more today. It is often used in contexts such as {{w|global warming}} or {{w|World war|global warfare}}. But since a globe is spherical, this substitution makes more sense than most, although talking about ''the effect of spherical warming'' would probably not get {{w|Greenpeace}} into action.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Years}}&lt;br /&gt;
| {{w|Minute|Minutes}}&lt;br /&gt;
| It will often make a sentence lose its meaning when changing the units drastically from years to minutes (there are 525600 minutes in the usual 365 days present in a year). For instance it would be unusual that a prisoner convicted for murder would get 20 minutes in jail, rather than 20 years.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Minute|Minutes}}&lt;br /&gt;
| {{w|Years}}&lt;br /&gt;
| Same as above but reversed. For instance a car might make a trip around a race track in just 7 years! One lesson at school lasted 45 years.&lt;br /&gt;
|-&lt;br /&gt;
| No {{w|Indication| indication}}&lt;br /&gt;
| Lots of {{w|Sign (disambiguation)|signs}}&lt;br /&gt;
| Scientifically, the fact that there is 'no indication' that a theorem is correct does not positively prove the theorem wrong, it merely does not support it (assuming there are no actual counter-indications, which is often the case with the more esoteric ideas). This is often seized upon by those trying to promote a pseudoscience, in that their chosen idea &amp;quot;has not been proven to be wrong&amp;quot; (and yet, conversely, &amp;quot;it's just a theory&amp;quot; is incorrectly used to refute something that has valid scientific backing). Moreover, hearsay and bad experimental practices are often cited as 'proof'. A crackpot idea may thus be unsupported by valid science (there is 'no indication' of its truth) and yet its supporters insist upon there being 'lots of signs' that it is true, selectively using only ambiguous results that (to them, at least) lend credence to it being a fact. The substitution of 'no indication' with 'lots of signs' thus automatically converts the expected conservative and cautious stance on some disputed issue or other into the weasel-words phrasing that the issue's supporters may start using in their own propaganda.&lt;br /&gt;
|-&lt;br /&gt;
| [https://en.wiktionary.org/wiki/urge Urged]{{w|Self-control|restraint}} by&lt;br /&gt;
| {{w|Alcohol intoxication|Drunkenly}} [https://en.wiktionary.org/wiki/egg_on egged on]&lt;br /&gt;
| If someone urges someone else to restrain themselves, then they are trying to make them exercise self-control, and discourage them from starting or continuing a possibly foolish act. In this substitution we have the exact opposite, as to egg someone on to do something is actively encourage an act to happen, or continue.&lt;br /&gt;
|-&lt;br /&gt;
| {{w|Horsepower}}&lt;br /&gt;
| {{w|Ton|Tons}} of {{w|horsemeat}}&lt;br /&gt;
| Cars power is measured in horsepower (hp), a typical family car having like hundred hp, being derived from the nominal amount of power that a suitably-harnessed horse could have provided. In cars, this has nothing to do with horse meat, of any quantity, but here a mechanical (or electrical) engine is envisaged as a literally horse-powered device.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
===Example of sentences===&lt;br /&gt;
*Here follows some real examples with links to the news/text:&lt;br /&gt;
**Words from the list, and the replacement words are highlighted with '''bold''' font.&lt;br /&gt;
**All words are included at least once, and the list is sort of sorted after the order the words appear in the comic, but most sentences have more than one word from the list, on purpose!&lt;br /&gt;
&lt;br /&gt;
*[http://observer.com/2015/12/fifth-republican-debate-where-each-candidate-excelled-and-faltered/ Original sentence]: Fifth Republican '''debate''': where each '''candidate''' excelled and faltered&lt;br /&gt;
:Modified sentence: Fifth Republican '''dance-off''': where each '''airbender''' excelled and faltered&lt;br /&gt;
&lt;br /&gt;
*[http://www.motorauthority.com/news/1101667_1000-horsepower-self-driving-electric-faraday-future-concept-leaked Original sentence]: 1,000-'''Horsepower''' '''Self-Driving''' Electric Faraday Future Concept Leaked?&lt;br /&gt;
:Modified sentence: 1,000-'''Tons of Horsemeat''' '''Uncontrollably Swerving''' Electric Faraday Future Concept Leaked?&lt;br /&gt;
&lt;br /&gt;
*[http://www.breitbart.com/big-government/2015/12/18/poll-donald-trump-remains-clear-gop-frontrunner-cnn-debate/ Original sentence]: A new Morning Consult '''poll''' shows real estate mogul Donald Trump remains on top as the GOP '''frontrunner''' following Tuesday’s '''debate'''.&lt;br /&gt;
:Modified sentence: A new Morning Consult '''psychic reading''' shows real estate mogul Donald Trump remains on top as the GOP '''blade runner''' following Tuesday’s '''dance-off'''.&lt;br /&gt;
&lt;br /&gt;
*[http://www.japantimes.co.jp/news/2016/01/01/asia-pacific/new-years-address-north-koreas-kim-vows-raise-living-standards/#.VouQZvnhBlZ Original sentence]: North Korea’s Kim '''vows to''' raise living standards&lt;br /&gt;
:Modified sentence: North Korea’s Kim '''probably won't''' raise living standards&lt;br /&gt;
&lt;br /&gt;
*[http://www.dailymail.co.uk/news/article-3180163/Murderers-rapists-1-153-criminals-large-recalled-prison-30-years.html Original sentence]: Murderers and rapists among 1,153 criminals still '''at large''' after being recalled to prison over the last 30 '''years'''&lt;br /&gt;
:Modified sentence: Murderers and rapists among 1,153 criminals still '''very large''' after being recalled to prison over the last 30 '''minutes'''&lt;br /&gt;
&lt;br /&gt;
*[http://www.dawn.com/news/1169341 Original sentence]:  Pakistan '''successfully''' tests first indigenous armed '''drone'''&lt;br /&gt;
:Modified sentence:  Pakistan '''suddenly''' tests first indigenous armed '''dog'''&lt;br /&gt;
&lt;br /&gt;
*[http://www.wsj.com/articles/obama-expands-gun-controls-in-executive-moves-1452012973 Original sentence]:  Obama '''Expands''' Gun Controls in Executive Moves&lt;br /&gt;
:Modified sentence: Obama '''Physically Expands''' Gun Controls in Executive Moves&lt;br /&gt;
&lt;br /&gt;
*[http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3578054/ Original sentence]: There was '''no indication''' of '''first degree''' familial relationships in the analyzed dataset.&lt;br /&gt;
:Modified sentence: There was '''lots of signs''' of '''friggin' awful''' familial relationships in the analyzed dataset&lt;br /&gt;
*[http://www.thehindu.com/thehindu/2003/06/22/stories/2003062202101200.htm Original sentence]:  …rescue crews continued to collect bodies and interview survivors, including '''an unknown number''' of wounded languishing in homes and hospitals with '''third degree''' burns&lt;br /&gt;
:Modified sentence: …rescue crews continued to collect bodies and interview survivors, including '''like hundreds''' of wounded languishing in homes and hospitals with '''friggin' awful''' burns&lt;br /&gt;
&lt;br /&gt;
*[http://edition.cnn.com/2015/12/09/politics/azealia-banks-donald-trump-idiot/ Original sentence]: The Republican presidential '''front-runner''' faces a '''global''' firestorm&lt;br /&gt;
:Modified sentence: The Republican presidential '''blade runner''' faces a '''spherical''' firestorm&lt;br /&gt;
&lt;br /&gt;
*[http://www.reuters.com/article/us-georgia-ossetia-obama-idUSWBT00953020080808 Original sentence]: U.S. presidential '''candidate''' Barack Obama on Friday '''urged restraint by''' both Russia and Georgia in the conflict over the breakaway region of South Ossetia in Georgia.&lt;br /&gt;
:Modified sentence: U.S. presidential '''airbender''' Barack Obama on Friday '''drunkenly egged on''' both Russia and Georgia in the conflict over the breakaway region of South Ossetia in Georgia.&lt;br /&gt;
&lt;br /&gt;
*[http://phors.locost7.info/phors06.htm Original sentence]: Video: 52-'''Horsepower''' Citroen AX Laps Nurburgring In Under 10 '''Minutes'''&lt;br /&gt;
:Modified sentence: Video: 52-'''Tons of horsemeat''' Citroen AX Laps Nurburgring In Under 10 '''Years'''&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Caption above the panel:]&lt;br /&gt;
:More &lt;br /&gt;
:'''Substitutions'''&lt;br /&gt;
:That make reading the news more fun&lt;br /&gt;
&lt;br /&gt;
:[A table of words/sentences on the left that change in to those on the left. Between each set of words there is a gray arrow pointing from right.]&lt;br /&gt;
:{|&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Debate&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Dance-off&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Self driving&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Uncontrollably swerving&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Poll&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Psychic reading&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Candidate&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Airbender&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Drone&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Dog&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Vows to&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Probably won't&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | At large&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Very large&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Successfully&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Suddenly&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Expands&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Physically expands&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | First/second/third-degree&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Friggin' awful&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | An unknown number&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Like hundreds&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Front runner&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Blade runner&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Global&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Spherical&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Years&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Minutes&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Minutes&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Years&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | No indication&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Lots of signs&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Urged restraint by&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Drunkenly egged on&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Horsepower&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Tons of horsemeat&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Substitution series]]&lt;br /&gt;
[[Category:Comics sharing name|Substitutions]]&lt;br /&gt;
[[Category:Charts]]&lt;br /&gt;
[[Category:Language]]&lt;br /&gt;
[[Category:Politics]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Self-driving cars]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1288:_Substitutions&amp;diff=140072</id>
		<title>1288: Substitutions</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1288:_Substitutions&amp;diff=140072"/>
				<updated>2017-05-19T23:42:46Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* 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;
This is the first comic in the [[:Category:Substitution series|Substitution series]] where [[Randall]] has suggested substitutions that will make reading the news more fun. But there have been several [[:Category:Substitutions|comics using substitutions]] both before and after these ones.&lt;br /&gt;
&lt;br /&gt;
The series as of 2016:&lt;br /&gt;
*[[1288: Substitutions]] &lt;br /&gt;
*[[1625: Substitutions 2]]&lt;br /&gt;
*[[1679: Substitutions 3]]&lt;br /&gt;
&lt;br /&gt;
[[Randall]] 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 doesn't think very  highly of the news, he's probably suggesting this chart wouldn't make them less accurate at all. (See for instance [[558: 1000 Times]] and [[932: CIA]]).&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' could be a reference to the Space Core from {{w|Portal 2}}, or to the way {{w|The Muppet Show}} presented [https://www.youtube.com/watch?v=iHsr7Chmff8 Pigs in Spaaace].&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, though it considered to have done so incredibly poorly, while also lacking any form of ergonomic comfort and sporting several critical design flaws. As a result it is commonly mocked as one of Nintendo's biggest failures (sometimes by Nintendo itself).&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;
It seems generally that Randall is no fan of Google Glass, which was also shown earlier in [[1251: Anti-Glass]] and later in [[1304: Glass Trolling]]. Thus explaining why Google Glass has such a ridiculous substitution as ''Virtual Boy''. Google Glass has become a [[:Category:Google Glass|recurring theme]] in xkcd.&lt;br /&gt;
&lt;br /&gt;
In the title text {{w|Elon Musk}} is mentioned. He is (amongst other things) the CEO of {{w|Tesla Motors}}, which produces electric cars. In the title text the sentence &amp;quot;Electric cars&amp;quot; was replaced by &amp;quot;atomic cats&amp;quot; according to the chart of the comic.&lt;br /&gt;
&lt;br /&gt;
News reports about new studies ({{w|Tumblr}} posts) are further lampooned in [[1295: New Study]], a comic posted two weeks later.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Caption above the panel:]&lt;br /&gt;
:'''Substitutions''' that make reading the news more fun:&lt;br /&gt;
&lt;br /&gt;
:[A table of words/sentences on the left that change in to those on the left. Between each set of words there is a gray arrow pointing from right.]&lt;br /&gt;
:{|&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Witnesses&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| These dudes I know&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Allegedly&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Kinda probably&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | New study&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Tumblr post&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Rebuild&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Avenge&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Space&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Spaaace&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Google Glass&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Virtual Boy&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Smartphone&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Pokédex&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Electric&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Atomic&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Senator&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Elf-lord&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Car&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Cat&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Election&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Eating contest&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Congressional leaders&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| River spirits&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Homeland security&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Homestar Runner&lt;br /&gt;
|-&lt;br /&gt;
| style=&amp;quot;text-align:right;&amp;quot; | Could not be reached for comment&lt;br /&gt;
| &amp;lt;font color=&amp;quot;gray&amp;quot;&amp;gt;➜&amp;lt;/font&amp;gt;&lt;br /&gt;
| Is guilty and everyone knows it&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Substitution series]]&lt;br /&gt;
[[Category:Comics sharing name|Substitutions]]&lt;br /&gt;
[[Category:Charts]]&lt;br /&gt;
[[Category:Comics featuring Elon Musk]]&lt;br /&gt;
[[Category:Language]]&lt;br /&gt;
[[Category:Video games]]&lt;br /&gt;
[[Category:Pokémon]]&lt;br /&gt;
[[Category:Politics]]&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:Google Glass]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=652:_More_Accurate&amp;diff=140071</id>
		<title>652: More Accurate</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=652:_More_Accurate&amp;diff=140071"/>
				<updated>2017-05-19T23:30:49Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 652&lt;br /&gt;
| date      = October 21, 2009&lt;br /&gt;
| title     = More Accurate&lt;br /&gt;
| image     = more_accurate.png&lt;br /&gt;
| titletext = We live in a world where there are actual fleets of robot assassins patrolling the skies. At some point there, we left the present and entered the future.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This comic spoofs the {{w|Terminator (franchise)|Terminator}} series, in which a super-intelligent machine from the future time travels back in time to kill {{w|Sarah Connor (Terminator)|Sarah Connor}}. As could be expected from a movie, the antagonistic robot is a human-like android.&lt;br /&gt;
&lt;br /&gt;
However, we currently have military &amp;quot;robots&amp;quot; (actually vehicles controlled remotely by people) that are completely unlike anything in the movie. Originally, {{w|Unmanned aerial vehicle|UAV}} were only used for surveillance and reconnaissance. But, now more than ever, they are used for attacks. And most importantly, they are not walking humanoids but flying machines. They are not restricted to carrying human-intended guns as in the movie but are armed with powerful explosives and long-range missiles. Thus the name of the comic: Randall points out being attacked by a flying plane-like drone -- such as the {{w|General Atomics MQ-1 Predator|Predator drone}} shown in the last panel (heavily used for offensive operations by the USAF and the CIA in Afghanistan and Pakistan) -- is a much more accurate outcome should the robots rise up against humans.&lt;br /&gt;
&lt;br /&gt;
One thing that keeps us short of a Terminator scenario is that most of the unmanned aerial vehicles are either pre-programmed or flown remotely by members of the military, and are not left to their own devices.&lt;br /&gt;
&lt;br /&gt;
The title text emphasizes this by pointing out that we have entire fleets of these drones, and notes that at some point, we entered the future.&lt;br /&gt;
&lt;br /&gt;
Similar buildup and Terminator reference are to be found in [[1177: Time Robot]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball with a shotgun approaches a woman.]&lt;br /&gt;
:Cueball: Sarah! Come with me if you want to live! A robot assassin has been sent here to kill you!&lt;br /&gt;
&lt;br /&gt;
:[Sarah holds her hands over her mouth.]&lt;br /&gt;
:Cueball: I'm here to save you. I may not be as strong or fast as a machine, but I'll fight to keep you-&lt;br /&gt;
&lt;br /&gt;
:[There's a huge orange and yellow explosion. The two are disintegrated.]&lt;br /&gt;
:''BOOM''&lt;br /&gt;
&lt;br /&gt;
:[A flying robot assassin is above the bomb site.]&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Robots]]&lt;br /&gt;
[[Category:Time travel]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1839:_Doctor_Visit&amp;diff=140069</id>
		<title>1839: Doctor Visit</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1839:_Doctor_Visit&amp;diff=140069"/>
				<updated>2017-05-19T23:27:50Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1839&lt;br /&gt;
| date      = May 19, 2017&lt;br /&gt;
| title     = Doctor Visit&lt;br /&gt;
| image     = doctor_visit.png&lt;br /&gt;
| titletext = According to these blood tests, you're like 30% cereal.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a BOT - Edited by a human. Needs more humans.}}&lt;br /&gt;
[[Cueball]] is visiting his doctor [[Ponytail]], apparently for a general medical checkup.&lt;br /&gt;
&lt;br /&gt;
While there is nothing wrong with him medically, the doctor wonders why he has continued to work for many years despite his body parts' individual fragility. Compared to man-made structures - like the USB cables mentioned by Ponytail, which quickly begin to fray - it's surprising that the body can survive for so long while sustaining so much wear and tear. Actually the body gets stronger and more fit the more it is used, as opposed to USB cables.&lt;br /&gt;
&lt;br /&gt;
Ponytail specifically mentions his eyes which are so fragile and exposed. Yet most people go through a whole life with both eyes intact, although the vision itself may be impaired. The human reflexes and the shape of the skull around the eyes has a lot to do with the fact that it is possible to protect such fragile structures for a lifetime.&lt;br /&gt;
&lt;br /&gt;
Ponytail also remarks that the body is composed of high pressure fluids (particularly blood, intracellular and extracellular fluids) and intricate parts (like the nervous system and the heart). If the fluids stopped flowing or the intricate parts stopped working, the entire body would fail, killing Cueball.&lt;br /&gt;
&lt;br /&gt;
It should be noted that the human body is constantly replacing dead/injured cells and proteins. In a young human body, everything in the body is continually refurbished, and nothing is able to become old enough to deteriorate unintentionally; this requires a constant supply of energy and nutrients to keep this process going. As the body ages, these self-repair mechanisms eventually slow and can no longer keep up with the required repairs; this manifests as the various symptoms of old age (wrinkled skin, graying and balding hair, worsening eyesight and hearing, etc.)&lt;br /&gt;
&lt;br /&gt;
USB cables are built to withstand far more wear and tear than the human body. But while this makes them tougher than blood vessels on the outset, they inevitably fray and fail faster than blood vessels because they lack the self-repair mechanisms of organic material.&lt;br /&gt;
&lt;br /&gt;
The doctor's final  remark is that Cueball is mainly made from dissolved bread, which is true from the perspective that the food (bread) he eats is digested in his alimentary system, absorbed into his bloodstream and used as nutrients for growth and repair.&lt;br /&gt;
&lt;br /&gt;
This is taken further in the title text, where she states that the blood tests reveal he is 30% {{w|cereal}}.&lt;br /&gt;
&lt;br /&gt;
All things taken into consideration, we don't actually have any confirmation that Ponytail is a real doctor. As Randall has stated before, [[699: Trimester|anybody can just buy a lab coat]]. Although Ponytail's answer in the final panel lacks [[1644: Stargazing|the usual &amp;quot;I have no idea&amp;quot; or equivalent non-answer]], so it's still somewhat possible she's a real doctor having an existential episode.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball is seated on an medical examination table while Ponytail stands dressed in a doctor's coat holding a file in her right hand.]&lt;br /&gt;
:Cueball: Everything look good?&lt;br /&gt;
:Ponytail: I don't get how your body has been moving around for years and still works at all. My USB cables fray after like a month.&lt;br /&gt;
&lt;br /&gt;
:Ponytail: Your heart has been pumping for decades without pausing for even a few minutes.&lt;br /&gt;
:Ponytail: And your ''eyes!'' They're so fragile and exposed!&lt;br /&gt;
&lt;br /&gt;
:[Zoom in on Cueball gazing at his palms.]&lt;br /&gt;
:Ponytail (off-panel): You're full of all these high-pressure fluids and intricate parts that could kill you in seconds if they stopped working!&lt;br /&gt;
&lt;br /&gt;
:[Zoom out again to the entire scene.]&lt;br /&gt;
:Cueball: ...can you just tell me whether I'm healthy?&lt;br /&gt;
:Ponytail: Yeah, you're fine.&lt;br /&gt;
:Ponytail: Which is weird, given that your body is basically made from dissolved bread.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=652:_More_Accurate&amp;diff=139987</id>
		<title>652: More Accurate</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=652:_More_Accurate&amp;diff=139987"/>
				<updated>2017-05-18T01:07:06Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 652&lt;br /&gt;
| date      = October 21, 2009&lt;br /&gt;
| title     = More Accurate&lt;br /&gt;
| image     = more_accurate.png&lt;br /&gt;
| titletext = We live in a world where there are actual fleets of robot assassins patrolling the skies. At some point there, we left the present and entered the future.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This comic spoofs the {{w|Terminator (franchise)|Terminator}} series, in which a super-intelligent machine from the future time travels back in time to kill {{w|Sarah Connor (Terminator)|Sarah Connor}}. As could be expected in the movie, the antagonistic robot is a human-like android.&lt;br /&gt;
&lt;br /&gt;
However, we currently have military &amp;quot;robots&amp;quot; (actually vehicles controlled remotely by people) that are completely unlike anything in the movie. Originally, {{w|Unmanned aerial vehicle|UAV}} were only used for surveillance and reconnaissance. But, now more than ever, they are used for attacks. And most importantly, they are not walking humanoids but flying machines. They are not restricted to carrying human-intended guns as in the movie but are armed with powerful explosives and long-range missiles. Thus the name of the comic: Randall points out being attacked by a flying plane-like drone -- such as the {{w|General Atomics MQ-1 Predator|Predator drone}} shown in the last panel (heavily used for offensive operations by the USAF and the CIA in Afghanistan and Pakistan) -- is a much more accurate outcome should the robots rise up against humans.&lt;br /&gt;
&lt;br /&gt;
One thing that keeps us short of a Terminator scenario is that most of the unmanned aerial vehicles are either pre-programmed or flown remotely by members of the military, and are not left to their own devices.&lt;br /&gt;
&lt;br /&gt;
The title text emphasizes this by pointing out that we have entire fleets of these drones, and notes that at some point, we entered the future.&lt;br /&gt;
&lt;br /&gt;
Similar buildup and Terminator reference are to be found in [[1177: Time Robot]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball with a shotgun approaches a woman.]&lt;br /&gt;
:Cueball: Sarah! Come with me if you want to live! A robot assassin has been sent here to kill you!&lt;br /&gt;
&lt;br /&gt;
:[Sarah holds her hands over her mouth.]&lt;br /&gt;
:Cueball: I'm here to save you. I may not be as strong or fast as a machine, but I'll fight to keep you-&lt;br /&gt;
&lt;br /&gt;
:[There's a huge orange and yellow explosion. The two are disintegrated.]&lt;br /&gt;
:''BOOM''&lt;br /&gt;
&lt;br /&gt;
:[A flying robot assassin is above the bomb site.]&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Robots]]&lt;br /&gt;
[[Category:Time travel]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=591:_Troll_Slayer&amp;diff=139812</id>
		<title>591: Troll Slayer</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=591:_Troll_Slayer&amp;diff=139812"/>
				<updated>2017-05-14T23:24:39Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 591&lt;br /&gt;
| date      = June 1, 2009&lt;br /&gt;
| title     = Troll Slayer&lt;br /&gt;
| image     = troll slayer.png&lt;br /&gt;
| titletext = We have met the enemy and he is us.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
== Explanation ==&lt;br /&gt;
{{w|Stephenie Meyer}} is the author of the {{w|Twilight (novel series)|Twilight novels}}, a series of {{w|vampire}} novels popular with young teens. It is a love it or hate it type of novel, with a large following and a large portion of haters as well.&lt;br /&gt;
&lt;br /&gt;
In the comic, {{w|4chan}}, an {{w|imageboard}}, is featured. Imageboards such as 4chan have the feature to post anonymously. The users of 4chan launch an attack on a Twilight board and Stephenie Meyer asks them to stop. When they refuse, Meyer writes 4chan into her next novel, thereby drawing in a large number of fans of her novel as a counter-attack to what 4chan ran on the Twilight forum. This results in what the original 4chan users consider a ruined imageboard (not that this plan would have any chance of success in the real 4chan, but there's the joke as presented).&lt;br /&gt;
&lt;br /&gt;
The title of the comic is drawn from the internet slang term {{w|troll (internet)|troll}}, which refers to actively attempting to get a rise out of a forum. In this instance, 4chan attempted to troll a Twilight board and Meyer acted against the troll, making her a &amp;quot;slayer&amp;quot; of them. Obviously the pimpled boy she chats with is very dismayed by this result, as there are now so many more vampire-book-fans than computer geeks on 4chan, and they cannot get through with any of their funny/evil plans anymore. There may also be a reference to the famous {{w|vampire slayer}} known as {{w|Buffy the Vampire Slayer|Buffy}}, seeing that Stephenie's main character vampires do not need to be slain, but she then turns on those who tries to do so in real life on the message board.&lt;br /&gt;
&lt;br /&gt;
The pictures used on the two panels showing the 4chan imageboard tells a lot about their users. It is unclear what the text page refers to. And also what it is that [[Cueball]] is standing next to. But a black hat, as shown in the third picture is typical for an internet troll (see the xkcd version of [[Black Hat]]), and also the guy saying {{w|LOL}} is already lauging out loud at you before you read his text. He also LOL's in his comment about the angsty teens that reads the books, and who'm he look forward to trolling.&lt;br /&gt;
&lt;br /&gt;
In the second 4chan panel all four images relate to ''Twilight''. The first picture most likely depicts {{w|Edward Cullen}} and {{w|Bella Swan}} (from the movies) standing with their backs against each other. This person enjoys being anonymous.&lt;br /&gt;
The second picture with the text ''Dawnz'' refers, in &amp;quot;plural&amp;quot; form, to the last book ''{{w|Breaking Dawn}}'' which was split into two films {{w|The Twilight Saga: Breaking Dawn – Part 1|part 1}} and {{w|The Twilight Saga: Breaking Dawn – Part 2|part 2}}. This person wish to know about peoples favorite vampire, exactly the kind of questions the trolls would have mocked on the Twilight board, now infesting their own site. The third picture is of a person (man/woman?) who have tried to dress up like a {{w|goth}} vampire, even commenting on the darkness of the picture. The last picture depicts the cover of the last book ''Breaking Dawn'' with the two chess pieces. This fan seems to be searching for a date around Dallas...&lt;br /&gt;
&lt;br /&gt;
The title text refers to {{w|Walt Kelly}}'s famous {{w|Pogo_(comic_strip)#.22We_have_met_the_enemy_and_he_is_us..22|saying}}. Kelly used it to refer to all of mankind, whereas here it refers to the users of 4chan, by bringing on the enemy of their forum themselves.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[A list of post comments alongside pictures on a website. The first picture shows a page from a book/website with a small black picture with a white feature in the upper left corner and text to the right and below it. The second picture shows Cueball in front of three people, with a unclear drawing to the right (is it a canon?). The third picture shows a man with a black hat holding up a sword to the left and a trumpet to the right. The fourth and last picture is cut off in the middle at the bottom of the frame. The visible top part shows a drawing of a mans face from the nose/ears and up. The man has black hair and says LOL].&lt;br /&gt;
:Text picture: Hey, let's troll the fuck out of the Twilight boards&lt;br /&gt;
:Cueball picture: I'm in. Should be fun&lt;br /&gt;
:Man with sword picture: Me too. Signing on now.&lt;br /&gt;
:LOL face picture: Lol angsty teens.&lt;br /&gt;
&lt;br /&gt;
:[Stephenie Meyer is shown sitting facing right and chatting at her computer. She get's a reply from the screen. It looks like she actually speaks the lines of text to someone, but she only types it in via the keyboard. This becomes clear in in the next panel where the pimpled boy she talks to obviously types his reply on the keyboard. Across the top border of the frame is a smaller frame with a caption:]&lt;br /&gt;
:Hours Later:&lt;br /&gt;
&lt;br /&gt;
:Stephenie Meyer (typing): Hi, it's Stephenie Meyer. Fine, you don't like my books. But please leave us alone.&lt;br /&gt;
:Pimpled boy (from computer): Show us your tits.&lt;br /&gt;
:Stephenie Meyer (typing): I asked politely. Don't make me get tough.&lt;br /&gt;
&lt;br /&gt;
:[A boy with lots of pimples and black hair is sitting at his computer typing (facing the other way towards Stephenie in the previous panel). He writes his reply on the keyboard and receives a reply from Stephenie coming out of the computer.]&lt;br /&gt;
:Pimpled boy (typing): And what, call the internet police? You don't get it, do you? We've been trolling for years. We're all anonymous. There's nothing you can do to hurt us. We're the net's hate machine.&lt;br /&gt;
:Stephenie Meyer (from computer): Okay. Just remember, I gave you a chance. &amp;lt;code&amp;gt;*Disconnected*&amp;lt;/code&amp;gt;.&lt;br /&gt;
&lt;br /&gt;
:[A page from a book is shown lying slanted across the panel. Some of the text is thus cut off at the edges of the frame. The first eight lines can be read clearly, even though the last letter in both the 2nd and sixth line is partly cut-off. Below that there are four incomplete lines, where only the visible part will be transcribed, but a good guess at the missing text is written in square brackets. Across the top border of the frame is a smaller frame with a caption:]&lt;br /&gt;
:Six Months Later:&lt;br /&gt;
&lt;br /&gt;
:Vampires! Book VI&lt;br /&gt;
&lt;br /&gt;
:Edward ran a pale hand &lt;br /&gt;
:through his perfect golden-&lt;br /&gt;
:bronze hair, then signed &lt;br /&gt;
:on to 4chan.org, the darkest&lt;br /&gt;
:place on the internet, where&lt;br /&gt;
:all his vampire compatriots &lt;br /&gt;
:spent their time.&lt;br /&gt;
:Suddenly, there was [a]&lt;br /&gt;
:[sha]rp knock at the d[oor]&lt;br /&gt;
:[?e?] swept in [?]&lt;br /&gt;
:[?r?]ing&lt;br /&gt;
&lt;br /&gt;
:[Another list of post comments alongside pictures on the same website as in the first panel.  The first picture shows a man with black hair and a woman with long hair standing with their backs against each other (probably Edward and Bella from the books). The second picture is just a white frame with the text Dawnz. The third picture shows a person from the chest and up. The person has black hair and black clothes, with some kind of collar. The fourth and last picture shows two chess piece a large one in front of the other. The picture is shown completely but the text message seems to be more than two lines long, but only the top two lines are shown. Across the top border of the frame is a smaller frame with a caption:]&lt;br /&gt;
:Shortly thereafter:&lt;br /&gt;
&lt;br /&gt;
:Two people picture: OMG I love this place it's so edgy being anonymous&lt;br /&gt;
:Dawnz picture: Whos your favorite vampire&lt;br /&gt;
:Collared person picture: Check out my pic Im so dark just like this site&lt;br /&gt;
:Chess piece picture: Any Twilight fans in Dallas want to meet a lonely&lt;br /&gt;
&lt;br /&gt;
:[Back to the boy with lots of pimples now sitting resigned at his computer without typing.]&lt;br /&gt;
:Hairy: Oh... Oh God.&lt;br /&gt;
&lt;br /&gt;
{{Comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring real people]]&lt;br /&gt;
[[Category:Comics featuring Cueball]] &amp;lt;!-- the second picture in the first panel shows Cueball --&amp;gt;&lt;br /&gt;
[[Category:Twilight]]&lt;br /&gt;
[[Category:Internet]]&lt;br /&gt;
&amp;lt;!-- not a comics featuring Hairy - this is a computer geek boy with pimples, and thus clearly not the hairy every-man that is named Hairy --&amp;gt;&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1834:_Lunch_Order&amp;diff=139754</id>
		<title>1834: Lunch Order</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1834:_Lunch_Order&amp;diff=139754"/>
				<updated>2017-05-12T21:01:25Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1834&lt;br /&gt;
| date      = May 8, 2017&lt;br /&gt;
| title     = Lunch Order&lt;br /&gt;
| image     = lunch order.png&lt;br /&gt;
| titletext = GO FOR LUNCH, REPEAT, GO FOR LUNCH.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|New page}}&lt;br /&gt;
Autocorrect is a feature in many software text-entry applications (such as smartphone &amp;quot;keyboards&amp;quot;) that will make changes to entered text that it identifies as misspelled in order to quickly increase legibility of the final text. While this process typically makes text entry quicker and easier for users, sometimes the automatically corrected text will not match what the user intended to send, which can lead to miscommunication.&lt;br /&gt;
&lt;br /&gt;
In most circumstances, military units charged with the maintenance of active nuclear weapons will receive their orders to employ those weapons based on direct communication from a commanding authority, these forces in the United States are commanded by the United States Strategic Command. The majority of modern nuclear weapons are prepared to be deployed by rocket launch.&lt;br /&gt;
&lt;br /&gt;
The joke involves anachronisms. To our knowledge, the last time the United States were at readiness to launch nuclear missiles at a hostile power was [http://www.rawstory.com/2014/04/nukes-were-almost-used-13-times-since-1962-and-the-risk-of-nuclear-accidents-is-rising-report/ June 1980], while the function we know today as Autocorrect would not enter development until [https://www.wired.com/2014/07/history-of-autocorrect/ the 1990's]. That said, the comic might be playing off recent fears involving [http://www.complex.com/life/2017/04/china-warns-united-states-north-korea-war-possible hostilities between the United States and North Korea]; if any launch preparations have been taken in 2017, they were not declassified by the time this comic was published.&lt;br /&gt;
&lt;br /&gt;
The comic plays on the similarity of the words &amp;quot;launch&amp;quot; and &amp;quot;lunch.&amp;quot; By receiving an order to &amp;quot;Lunch&amp;quot; instead of &amp;quot;Launch,&amp;quot; nuclear conflict was avoided.&lt;br /&gt;
&lt;br /&gt;
The title text plays on the similarity between two phrases: &amp;quot;GO FOR LAUNCH&amp;quot; is the standard way to express the {{w|Launch status check}} for a rocket (and means that all checks have passed and launch can proceed), whereas &amp;quot;GO FOR LUNCH&amp;quot; expresses the more mundane act of simply beginning one's lunch break. Despite the repetition (which is intended to reduce the chance of a miscommunication), the autocorrect still managed to distort the message a further two times.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
[A control panel is showed, three Hairy's are in there, the rightmost one is controlling the panel, the two others are talking.]&lt;br /&gt;
&lt;br /&gt;
Hairy 1: Sir-Strategic command has sent us a lunch order.&lt;br /&gt;
&lt;br /&gt;
Hairy 2: Don't they have anything better to do?&lt;br /&gt;
&lt;br /&gt;
[Below the panel is a caption.]&lt;br /&gt;
&lt;br /&gt;
Caption: Everyone complains about autocorrect, but we forget about the time it prevented a nuclear war.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&amp;lt;!-- Include any categories below this line. --&amp;gt;&lt;br /&gt;
[[Category:Comics featuring Hairy]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1836:_Okeanos&amp;diff=139734</id>
		<title>Talk:1836: Okeanos</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1836:_Okeanos&amp;diff=139734"/>
				<updated>2017-05-12T16:19:54Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
Take it from here guys. Also, glad the website is back online! [[User:Nialpxe|Nialpxe]] ([[User talk:Nialpxe|talk]]) 06:58, 12 May 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
&amp;quot;Who else is watching...&amp;quot; is used as some form of community bonding on Youtube to connect with other people re-watching (or watching for the first time) (much) older videos at a later date. COmpare with &amp;quot;Who else got here from XKCD [or similar]&amp;quot; if the video was linked from a particular site and it's users are trying to recognize each other. [[Special:Contributions/162.158.222.76|162.158.222.76]] 07:03, 12 May 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Yay! The website's finally back online! --[[User:JayRulesXKCD|'''JayRules''XKCD'''  ]]&amp;lt;sup&amp;gt;[[User talk:JayRulesXKCD|what's up?]]&amp;lt;/sup&amp;gt; 11:35, 12 May 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Isn't often Randall does color.  Hmmm, must be Fake.  :)  --[[Special:Contributions/108.162.238.11|108.162.238.11]] 11:37, 12 May 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
&amp;quot;When I went on a boat I dropped my phone can you look for it&amp;quot; I wonder if this is supposed to mean that the phone [insert name here] dropped is the one live-streaming or if [insert name here] is asking the people on the live-stream to look for his phone. --[[User:JayRulesXKCD|'''JayRules''XKCD'''  ]]&amp;lt;sup&amp;gt;[[User talk:JayRulesXKCD|what's up?]]&amp;lt;/sup&amp;gt; 11:49, 12 May 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Crafting might not be a Minecraft reference, as lots of games have crafting. [[Special:Contributions/172.68.206.52|172.68.206.52]] 12:54, 12 May 2017 (UTC)&lt;br /&gt;
:Fixed it. --[[User:JayRulesXKCD|'''JayRules''XKCD'''  ]]&amp;lt;sup&amp;gt;[[User talk:JayRulesXKCD|what's up?]]&amp;lt;/sup&amp;gt; 13:30, 12 May 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
&amp;quot;[T]he ocean... is not a small place[citation needed]&amp;quot; is flat out hilarious. I just want to show my appreciation for whoever put 'citation needed' in there. I'm going to spend the next several days just thinking about how funny that is. [[User:IonFreeman|IonFreeman]] ([[User talk:IonFreeman|talk]]) 13:38, 12 May 2017 (UTC)&lt;br /&gt;
:Honestly, I feel that joke is ''way'' too overused on this wiki [[Special:Contributions/172.68.142.197|172.68.142.197]] 16:19, 12 May 2017 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1834:_Lunch_Order&amp;diff=139733</id>
		<title>1834: Lunch Order</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1834:_Lunch_Order&amp;diff=139733"/>
				<updated>2017-05-12T16:13:12Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1834&lt;br /&gt;
| date      = May 8, 2017&lt;br /&gt;
| title     = Lunch Order&lt;br /&gt;
| image     = lunch order.png&lt;br /&gt;
| titletext = GO FOR LUNCH, REPEAT, GO FOR LUNCH.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|New page}}&lt;br /&gt;
Autocorrect is a feature in many software text-entry applications (such as smartphone &amp;quot;keyboards&amp;quot;) that will make changes to entered text that it identifies as misspelled in order to quickly increase legibility of the final text. While this process typically makes text entry quicker and easier for users, sometimes the automatically corrected text will not match what the user intended to send, which can lead to miscommunication.&lt;br /&gt;
&lt;br /&gt;
In most circumstances, military units charged with the maintenance of active nuclear weapons will receive their orders to employ those weapons based on direct communication from a commanding authority, these force in the United States are commanded by the United States Strategic Command. The majority of modern nuclear weapons are prepared to be deployed by rocket launch.&lt;br /&gt;
&lt;br /&gt;
To our knowledge, the last time the United States were at readiness to launch nuclear missiles at a hostile power was [http://www.rawstory.com/2014/04/nukes-were-almost-used-13-times-since-1962-and-the-risk-of-nuclear-accidents-is-rising-report/ June 1980], while the function we know today as Autocorrect would not enter development until [https://www.wired.com/2014/07/history-of-autocorrect/ the 1990's].&lt;br /&gt;
&lt;br /&gt;
The comic plays on the similarity of the words &amp;quot;launch&amp;quot; and &amp;quot;lunch.&amp;quot; By receiving an order to &amp;quot;Lunch&amp;quot; instead of &amp;quot;Launch,&amp;quot; nuclear conflict was avoided.&lt;br /&gt;
&lt;br /&gt;
The title text plays on the similarity between two phrases: &amp;quot;GO FOR LAUNCH&amp;quot; is the standard way to express the {{w|Launch status check}} for a rocket (and means that all checks have passed and launch can proceed), whereas &amp;quot;GO FOR LUNCH&amp;quot; expresses the more mundane act of simply beginning one's lunch break. Despite the repetition (which is intended to reduce the chance of a miscommunication), the autocorrect still managed to distort the message a further two times.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
[A control panel is showed, three Hairy's are in there, the rightmost one is controlling the panel, the two others are talking.]&lt;br /&gt;
&lt;br /&gt;
Hairy 1: Sir-Strategic command has sent us a lunch order.&lt;br /&gt;
&lt;br /&gt;
Hairy 2: Don't they have anything better to do?&lt;br /&gt;
&lt;br /&gt;
[Below the panel is a caption.]&lt;br /&gt;
&lt;br /&gt;
Caption: Everyone complains about autocorrect, but we forget about the time it prevented a nuclear war.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&amp;lt;!-- Include any categories below this line. --&amp;gt;&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1831:_Here_to_Help&amp;diff=139516</id>
		<title>1831: Here to Help</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1831:_Here_to_Help&amp;diff=139516"/>
				<updated>2017-05-03T04:46:27Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1831&lt;br /&gt;
| date      = May 1, 2017&lt;br /&gt;
| title     = Here to Help&lt;br /&gt;
| image     = here_to_help.png&lt;br /&gt;
| titletext = &amp;quot;We TOLD you it was hard.&amp;quot; &amp;quot;Yeah, but now that I'VE tried, we KNOW it's hard.&amp;quot;&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Is the hard problem explanation relevant? The main part of that explain has been moved into a trivia for easier reading to the conclusion at least.}}&lt;br /&gt;
This comic is a satire of computer programmers, who sometimes forget that not everything can be solved with an {{w|algorithm}}. In the first panel, [[Megan]] talks about how the field that she and [[Hairy]] works in has a difficult problem that many people have been working on. [[Cueball]], believing that algorithms can solve their problem, tries to help. In the next panel, Megan and Hairy silently watch Cueball working on the problem on his laptop. Finally, six months later, Cueball concedes, and an exasperated Megan retorts sarcastically, pointing out that she had explained its difficulty six months ago with the timeline.&lt;br /&gt;
&lt;br /&gt;
The title text furthers Cueball's apparent arrogance by showing a dialogue. Megan or Hairy says, &amp;quot;We TOLD you it was hard,&amp;quot; referring to the first panel, but Cueball, still confident in his own ability's superiority, says, &amp;quot;Yeah, but now that I'VE tried, we KNOW it's hard.&amp;quot; The joke is that Cueball believes that, even though he has just failed, it was his attempt which proved the difficulty, and not Megan and Hairy's work for years. The dialog references an exchange from the recent film ''{{w|The Imitation Game}}'', in which {{w|Alan Turing|Alan Turing's}} superior claims, &amp;quot;The Americans, the Russians, the French, the Germans, everyone thinks Enigma is unbreakable.&amp;quot; and Turing replies, &amp;quot;Good. Let me try and we'll know for sure, won't we?&amp;quot; &lt;br /&gt;
&lt;br /&gt;
The satire, however, applies far beyond computer programmers.  It can be read as a political commentary, like in ''[http://nymag.com/daily/intelligencer/2017/02/trump-nobody-knew-health-care-could-be-so-complicated.html Nobody knew health care could be so complicated.]'' It is what we'd all like to see when well-meaning advice givers provide the &amp;quot;simple&amp;quot; solution to all our problems, or management provides glib advice from ten thousand feet.  It is a commentary on the universal tendency to see problems as simple because we don't know what makes them hard.&lt;br /&gt;
&lt;br /&gt;
In the first place, the satire apparently refers to the mathematical/informatical definition of a &amp;quot;hard problem&amp;quot; (see [[#Trivia|below]]) and its confusion with its trivial understanding as well as to a common misunderstanding about verification/falsification. The plot is that Cueball is an enthusiastic and optimistic programmer but obviously a bad informatics guy because he apparently does not know what a &amp;quot;hard problem&amp;quot; is and mixes up the lack of a successful falsification/disproof that a problem is &amp;quot;hard&amp;quot; with a verification/proof. Actually, the formal proof that a problem is &amp;quot;hard&amp;quot; would not be a fail, but an &amp;quot;epic win&amp;quot; (well, maybe not for the disappointed Cueball).&lt;br /&gt;
&lt;br /&gt;
This may also be referencing IT support call centres ([[806: Tech Support]]), who often act as though complex computer problems can be solved with clichèd solutions such as 'turn it off and back on again'.&lt;br /&gt;
&lt;br /&gt;
This comic calls back to [[793: Physicists]] in central theme.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Megan, standing next to Hairy, is addressing the reader holding her arms out. Cueball walks in from the right.]&lt;br /&gt;
:Megan: Our field has been struggling with this problem for years.&lt;br /&gt;
&lt;br /&gt;
:[Cueball holds his laptop high up in one arm above Megan's head while holding his other arm out as well. Megan has turned to look at him.]&lt;br /&gt;
:Cueball: Struggle no more! I'm here to solve it with ''algorithms!''&lt;br /&gt;
&lt;br /&gt;
:[In a frame-less panel Cueball sits on a chair at a desk with his laptop working on it, while Hairy and Megan looks on from behind.]&lt;br /&gt;
&lt;br /&gt;
:[Cueball, still sitting at his laptop, points at the screen. Megan raises her arms and four small lines above her head, on either side of her speech line, indicate her annoyance with Cueball.]&lt;br /&gt;
:Six months later:&lt;br /&gt;
:Cueball: Wow, this problem is really hard.&lt;br /&gt;
:Megan: '''''You don't say.'''''&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*'''Hard problem''': &lt;br /&gt;
**The trivial understanding of a &amp;quot;problem&amp;quot; is any random task like &amp;quot;make me a webpage&amp;quot; and a &amp;quot;hard problem&amp;quot; means &amp;quot;it takes much effort to solve it&amp;quot;. However, the informatical definition of a &amp;quot;problem&amp;quot; is a formal description of a task like &amp;quot;find me the password to a given hash (with a length of N bits)&amp;quot; so it can be solved with an algorithm, i.e. a formal mathematical &amp;quot;how-to&amp;quot; or a piece of program code. A &amp;quot;hard problem&amp;quot; is a problem which can only be solved by &amp;quot;brute force&amp;quot;, that means (in this example) you have to try every possible password (2^N possibilities) and check whether its hash matches the given one. A &amp;quot;simple problem&amp;quot; is a one where a &amp;quot;short-cut&amp;quot; algorithm to the &amp;quot;brute force&amp;quot; method exists. There are problems which can be formally proven to be &amp;quot;hard&amp;quot; but, unfortunately, most problems like breaking a certain encryption algorithm can only be hoped to be &amp;quot;hard&amp;quot; or at least not be proven &amp;quot;simple&amp;quot; by finding a &amp;quot;short-cut&amp;quot; too soon. You may prove that a problem is not &amp;quot;hard&amp;quot; by finding such a &amp;quot;short-cut&amp;quot; but you cannot prove it is &amp;quot;hard&amp;quot; by trying and failing (the fact that you didn't find a &amp;quot;short-cut&amp;quot; does not mean there is none).&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:Comics featuring Hairy]]&lt;br /&gt;
[[Category:Programming]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1313:_Regex_Golf&amp;diff=139436</id>
		<title>1313: Regex Golf</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1313:_Regex_Golf&amp;diff=139436"/>
				<updated>2017-04-30T00:15:32Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1313&lt;br /&gt;
| date      = January 6, 2014&lt;br /&gt;
| title     = Regex Golf&lt;br /&gt;
| image     = regex_golf.png&lt;br /&gt;
| titletext = &amp;lt;nowiki&amp;gt;/bu|[rn]t|[coy]e|[mtg]a|j|iso|n[hl]|[ae]d|lev|sh|[lnd]i|[po]o|ls/ matches the last names of elected US presidents but not their opponents.&amp;lt;/nowiki&amp;gt;&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
The comic talks about {{w|regular expressions}}, which are a way to specify textual patterns. Given a regular expression, one can search for the pattern it specifies inside a text string. If the pattern is found, it's said that the pattern &amp;quot;matches&amp;quot; the string; if it's not found, it's said it doesn't match.&lt;br /&gt;
&lt;br /&gt;
The title of the comic and the first panel is based on &amp;quot;[http://regex.alf.nu/ regex golf]&amp;quot;, which is a discipline of &amp;quot;{{w|code golf}}&amp;quot;, a game in which programmers attempt to solve a given programming problem using as few characters as possible, analogous to the number of {{w|golf}} shots it takes to reach the goal. In regex golfing, the programmer is given two sets of text fragments, and he or she tries to write the shortest possible regular expression which would match all elements of one set, while at the same time not matching any element from the other set.&lt;br /&gt;
&lt;br /&gt;
The regex golf challenge Megan faces consists of matching all subtitles of (then extant) ''{{w|Star Wars}}'' films, while not matching any subtitle of ''{{w|Star Trek}}'' movies. {{w|Subtitle (titling)|Subtitles}} are the secondary titles of the movies, after the ''&amp;quot;Star Trek: &amp;quot;'' or ''&amp;quot;Star Wars Episode N: &amp;quot;''. For example, in ''Star Wars Episode I: The Phantom Menace'', the subtitle is ''The Phantom Menace''. In the first panel, she created a 12-character regex solving the challenge.&lt;br /&gt;
&lt;br /&gt;
Then she moved on to building a tool which would automatically build such a regex for arbitrary lists of text, which could be described as {{w|meta}}- regex golfing. But as she has lost this tool, she needs to search through her files and chooses a tool called &amp;quot;{{w|grep}}&amp;quot; to find it. This implies that she needs a regular expression that would find any code that appears to be a regex golf generator, which leads to another &amp;quot;meta-&amp;quot; layer of abstraction. At the end, Megan notes this sequence of meta-meta-... might go to infinity and Cueball quips that she now has &amp;quot;infinite problems&amp;quot; as a result of her efforts; Megan retorts that she already had &amp;quot;infinite problems&amp;quot; because she's geeky enough to run meta-versions of programs on themselves, and stubborn enough to continue on until she fails, to the exclusion of all else. This also seems to be a reference to a famous quote (see also ''[[1171: Perl Problems]]''):&lt;br /&gt;
&lt;br /&gt;
&amp;lt;blockquote&amp;gt;''Some people, when confronted with a problem, think &amp;quot;I know, I'll use regular expressions.&amp;quot; Now they have two problems.''&amp;lt;/blockquote&amp;gt;&lt;br /&gt;
&lt;br /&gt;
===Regular expressions===&lt;br /&gt;
The first regex Megan uses is &amp;lt;code&amp;gt;/m | [tn]|b/&amp;lt;/code&amp;gt;, said to match ''Star Wars'' subtitles but not ''Star Trek''.&lt;br /&gt;
&lt;br /&gt;
The forward slashes &amp;lt;code&amp;gt;/&amp;lt;/code&amp;gt; just mark the start and end of the regex. The &amp;lt;code&amp;gt;|&amp;lt;/code&amp;gt; character means &amp;quot;or&amp;quot;, so the regex matches any string that contains the patterns &amp;quot;&amp;lt;code&amp;gt;m &amp;lt;/code&amp;gt;&amp;quot;, &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot; or &amp;quot;&amp;lt;code&amp;gt;b&amp;lt;/code&amp;gt;&amp;quot; (including the spaces). The square brackets match one of the enclosed characters, meaning that &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot; matches either &amp;quot;&amp;lt;code&amp;gt; t&amp;lt;/code&amp;gt;&amp;quot; or &amp;quot;&amp;lt;code&amp;gt; n&amp;lt;/code&amp;gt;&amp;quot;. The regex is apparently case-insensitive, because it wouldn't work otherwise.&lt;br /&gt;
&lt;br /&gt;
The Star Wars subtitles match the parts of the regex in the following way:&lt;br /&gt;
*&amp;quot;The Phanto&amp;lt;u&amp;gt;m &amp;lt;/u&amp;gt;Menace&amp;quot; is matched by &amp;quot;&amp;lt;code&amp;gt;m &amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
*&amp;quot;Attack of&amp;lt;u&amp;gt; t&amp;lt;/u&amp;gt;he Clones&amp;quot; is matched by &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
*&amp;quot;Revenge of&amp;lt;u&amp;gt; t&amp;lt;/u&amp;gt;he Sith&amp;quot; is matched by &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
*&amp;quot;A&amp;lt;u&amp;gt; N&amp;lt;/u&amp;gt;ew Hope&amp;quot; is matched by &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
*&amp;quot;The Empire Strikes &amp;lt;u&amp;gt;B&amp;lt;/u&amp;gt;ack&amp;quot; is matched by &amp;quot;&amp;lt;code&amp;gt;b&amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
*&amp;quot;Return of&amp;lt;u&amp;gt; t&amp;lt;/u&amp;gt;he Jedi&amp;quot; is matched by &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot;.&lt;br /&gt;
Note that if one included the animated film &amp;quot;Star Wars: The Clone Wars&amp;quot; it would not be matched by &amp;quot;&amp;lt;code&amp;gt; [tn]&amp;lt;/code&amp;gt;&amp;quot; because the T is the start of the subtitle and is not preceded by a space. (The string also will likely fail to match some or all of the upcoming post-Disney-acquisition Star Wars films, which the comic predates; it definitely does not match the first two such films, 2015's &amp;quot;The Force Awakens&amp;quot; and 2017's &amp;quot;The Last Jedi&amp;quot;)&lt;br /&gt;
&lt;br /&gt;
On the other hand, none of the Star Trek subtitles contains an M followed by a space, a T or an N preceded by a space, or any B, so the regex does not match any of them. Note that in the original series all subtitles start with a &amp;quot;T&amp;quot; but it's the first character so it's not preceded by a space.&lt;br /&gt;
&lt;br /&gt;
Here is the list that Megan probably used:&lt;br /&gt;
*Original series:&lt;br /&gt;
**The Motion Picture&lt;br /&gt;
**The Wrath of Khan&lt;br /&gt;
**The Search For Spock&lt;br /&gt;
**The Voyage Home&lt;br /&gt;
**The Final Frontier&lt;br /&gt;
**The Undiscovered Country&lt;br /&gt;
*The Next Generation:&lt;br /&gt;
**Generations&lt;br /&gt;
**First Contact&lt;br /&gt;
**Insurrection&lt;br /&gt;
**Nemesis&lt;br /&gt;
*Reboot series:&lt;br /&gt;
**''the one without a subtitle''&lt;br /&gt;
**Into Darkness&lt;br /&gt;
**''Beyond''&lt;br /&gt;
&lt;br /&gt;
Note that ''Star Trek: Beyond'' was released after this comic and matches the regex, so the pattern doesn't work any more.&lt;br /&gt;
&lt;br /&gt;
In the last panel &amp;quot;and beyond&amp;quot; Megan uses the regular expression &amp;lt;code&amp;gt;/(meta-)*regex golf/&amp;lt;/code&amp;gt; to describe her problem. &amp;lt;code&amp;gt;*&amp;lt;/code&amp;gt; means &amp;quot;zero or more&amp;quot; of the preceding character/group (parentheses &amp;lt;code&amp;gt;()&amp;lt;/code&amp;gt; group characters). So this regex matches &amp;quot;regex golf&amp;quot;, &amp;quot;meta-regex golf&amp;quot;, &amp;quot;meta-meta-regex golf&amp;quot;, etc. In a way this is regex golf in itself, matching all levels of meta-regex golf while not matching anything else.&lt;br /&gt;
&lt;br /&gt;
In the title text, there is a long regex that is the solution of another regex golf challenge: matching the last names of all elected US presidents but not their opponents. Note that the list of opponents include some people who were previously or later became presidents, or whose last name matches that of another person who was president, so taken literally this is impossible. To make this work the list of opponents must exclude any names of presidents. The regular expression itself works in a very similar way to the Star Wars/Trek one, including several different patterns separated by &amp;lt;code&amp;gt;|&amp;lt;/code&amp;gt;. Each elected president matches one pattern while each opponent matches none.&lt;br /&gt;
&lt;br /&gt;
Here is a list of elected president and the patterns they match:&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
!Number&lt;br /&gt;
!President&lt;br /&gt;
!Matched expression&lt;br /&gt;
|-&lt;br /&gt;
|1&lt;br /&gt;
|{{w|George Washington|George Wa&amp;lt;u&amp;gt;sh&amp;lt;/u&amp;gt;ington}}&lt;br /&gt;
|&amp;lt;code&amp;gt;sh&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|2&lt;br /&gt;
|{{w|John Adams|John &amp;lt;u&amp;gt;Ad&amp;lt;/u&amp;gt;ams}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[ae]d&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|3&lt;br /&gt;
|{{w|Thomas Jefferson|Thomas &amp;lt;u&amp;gt;J&amp;lt;/u&amp;gt;efferson}}&lt;br /&gt;
|&amp;lt;code&amp;gt;j&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|4&lt;br /&gt;
|{{w|James Madison|James &amp;lt;u&amp;gt;Ma&amp;lt;/u&amp;gt;dison}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|5&lt;br /&gt;
|{{w|James Monroe|James Monr&amp;lt;u&amp;gt;oe&amp;lt;/u&amp;gt;}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[coy]e&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|6&lt;br /&gt;
|{{w|John Quincy Adams|John Quincy &amp;lt;u&amp;gt;Ad&amp;lt;/u&amp;gt;ams}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[ae]d&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|7&lt;br /&gt;
|{{w|Andrew Jackson|Andrew &amp;lt;u&amp;gt;J&amp;lt;/u&amp;gt;ackson}}&lt;br /&gt;
|&amp;lt;code&amp;gt;j&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|8&lt;br /&gt;
|{{w|Martin Van Buren|Martin Van &amp;lt;u&amp;gt;Bu&amp;lt;/u&amp;gt;ren}}&lt;br /&gt;
|&amp;lt;code&amp;gt;bu&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|9&lt;br /&gt;
|{{w|William Henry Harrison|William Henry Harr&amp;lt;u&amp;gt;iso&amp;lt;/u&amp;gt;n}}&lt;br /&gt;
|&amp;lt;code&amp;gt;iso&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|11&lt;br /&gt;
|{{w|James K. Polk|James K. &amp;lt;u&amp;gt;Po&amp;lt;/u&amp;gt;lk}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[po]o&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|12&lt;br /&gt;
|{{w|Zachary Taylor|Zachary &amp;lt;u&amp;gt;Ta&amp;lt;/u&amp;gt;ylor}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|14&lt;br /&gt;
|{{w|Franklin Pierce|Franklin Pier&amp;lt;u&amp;gt;ce&amp;lt;/u&amp;gt;}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[coy]e&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|15&lt;br /&gt;
|{{w|James Buchanan|James &amp;lt;u&amp;gt;Bu&amp;lt;/u&amp;gt;chanan}}&lt;br /&gt;
|&amp;lt;code&amp;gt;bu&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|16&lt;br /&gt;
|{{w|Abraham Lincoln|Abraham &amp;lt;u&amp;gt;Li&amp;lt;/u&amp;gt;ncoln}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[lnd]i&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|17&lt;br /&gt;
|{{w|Andrew Johnson|Andrew &amp;lt;u&amp;gt;J&amp;lt;/u&amp;gt;ohnson}}&lt;br /&gt;
|&amp;lt;code&amp;gt;j&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|18&lt;br /&gt;
|{{w|Ulysses S. Grant|Ulysses S. Gra&amp;lt;u&amp;gt;nt&amp;lt;/u&amp;gt;}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[rn]t&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|19&lt;br /&gt;
|{{w|Rutherford B. Hayes|Rutherford B. Ha&amp;lt;u&amp;gt;ye&amp;lt;/u&amp;gt;s}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[coy]e&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|20&lt;br /&gt;
|{{w|James A. Garfield|James A. &amp;lt;u&amp;gt;Ga&amp;lt;/u&amp;gt;rfield}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|22&lt;br /&gt;
|{{w|Grover Cleveland|Grover C&amp;lt;u&amp;gt;lev&amp;lt;/u&amp;gt;eland}}&lt;br /&gt;
|&amp;lt;code&amp;gt;lev&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|23&lt;br /&gt;
|{{w|Benjamin Harrison|Benjamin Harr&amp;lt;u&amp;gt;iso&amp;lt;/u&amp;gt;n}}&lt;br /&gt;
|&amp;lt;code&amp;gt;iso&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|24&lt;br /&gt;
|{{w|Grover Cleveland|Grover C&amp;lt;u&amp;gt;lev&amp;lt;/u&amp;gt;eland}}&lt;br /&gt;
|&amp;lt;code&amp;gt;lev&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|25&lt;br /&gt;
|{{w|William McKinley|William McKi&amp;lt;u&amp;gt;nl&amp;lt;/u&amp;gt;ey}}&lt;br /&gt;
|&amp;lt;code&amp;gt;n[hl]&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|26&lt;br /&gt;
|{{w|Theodore Roosevelt|Theodore R&amp;lt;u&amp;gt;oo&amp;lt;/u&amp;gt;sevelt}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[po]o&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|27&lt;br /&gt;
|{{w|William Howard Taft|William Howard &amp;lt;u&amp;gt;Ta&amp;lt;/u&amp;gt;ft}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|28&lt;br /&gt;
|{{w|Woodrow Wilson|Woodrow Wi&amp;lt;u&amp;gt;ls&amp;lt;/u&amp;gt;on}}&lt;br /&gt;
|&amp;lt;code&amp;gt;ls&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|29&lt;br /&gt;
|{{w|Warren G. Harding|Warren G. Har&amp;lt;u&amp;gt;di&amp;lt;/u&amp;gt;ng}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[lnd]i&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|30&lt;br /&gt;
|{{w|Calvin Coolidge|Calvin Coo&amp;lt;u&amp;gt;li&amp;lt;/u&amp;gt;dge}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[lnd]i&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|31&lt;br /&gt;
|{{w|Herbert Hoover|Herbert H&amp;lt;u&amp;gt;oo&amp;lt;/u&amp;gt;ver}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[po]o&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|32&lt;br /&gt;
|{{w|Franklin D. Roosevelt|Franklin D. R&amp;lt;u&amp;gt;oo&amp;lt;/u&amp;gt;sevelt}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[po]o&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|33&lt;br /&gt;
|{{w|Harry S. Truman|Harry S. Tru&amp;lt;u&amp;gt;ma&amp;lt;/u&amp;gt;n}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|34&lt;br /&gt;
|{{w|Dwight D. Eisenhower|Dwight D. Eise&amp;lt;u&amp;gt;nh&amp;lt;/u&amp;gt;ower}}&lt;br /&gt;
|&amp;lt;code&amp;gt;n[hl]&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|35&lt;br /&gt;
|{{w|John F. Kennedy|John F. Kenn&amp;lt;u&amp;gt;ed&amp;lt;/u&amp;gt;y}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[ae]d&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|36&lt;br /&gt;
|{{w|Lyndon B. Johnson|Lyndon B. &amp;lt;u&amp;gt;J&amp;lt;/u&amp;gt;ohnson}}&lt;br /&gt;
|&amp;lt;code&amp;gt;j&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|37&lt;br /&gt;
|{{w|Richard Nixon|Richard &amp;lt;u&amp;gt;Ni&amp;lt;/u&amp;gt;xon}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[lnd]i&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|39&lt;br /&gt;
|{{w|Jimmy Carter|Jimmy Ca&amp;lt;u&amp;gt;rt&amp;lt;/u&amp;gt;er}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[rn]t&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|40&lt;br /&gt;
|{{w|Ronald Reagan|Ronald Rea&amp;lt;u&amp;gt;ga&amp;lt;/u&amp;gt;n}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|41&lt;br /&gt;
|{{w|George H. W. Bush|George H. W. &amp;lt;u&amp;gt;Bu&amp;lt;/u&amp;gt;sh}}&lt;br /&gt;
|&amp;lt;code&amp;gt;bu&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|42&lt;br /&gt;
|{{w|Bill Clinton|Bill Cli&amp;lt;u&amp;gt;nt&amp;lt;/u&amp;gt;on}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[rn]t&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|43&lt;br /&gt;
|{{w|George W. Bush|George W. &amp;lt;u&amp;gt;Bu&amp;lt;/u&amp;gt;sh}}&lt;br /&gt;
|&amp;lt;code&amp;gt;bu&amp;lt;/code&amp;gt;&lt;br /&gt;
|-&lt;br /&gt;
|44&lt;br /&gt;
|{{w|Barack Obama|Barack Oba&amp;lt;u&amp;gt;ma&amp;lt;/u&amp;gt;}}&lt;br /&gt;
|&amp;lt;code&amp;gt;[mtg]a&amp;lt;/code&amp;gt;&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
Some presidents are missing because they weren't elected but became presidents after the resignation/death of their formers.&lt;br /&gt;
&lt;br /&gt;
And here is a list of how many unique last names are matched by each expression:&lt;br /&gt;
&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
!Expression&lt;br /&gt;
!Match count&lt;br /&gt;
|-&lt;br /&gt;
| bu&lt;br /&gt;
| 3&lt;br /&gt;
|-&lt;br /&gt;
| [rn]t&lt;br /&gt;
| 3&lt;br /&gt;
|-&lt;br /&gt;
| [coy]e&lt;br /&gt;
| 3&lt;br /&gt;
|-&lt;br /&gt;
| [mtg]a&lt;br /&gt;
| 7&lt;br /&gt;
|-&lt;br /&gt;
| j&lt;br /&gt;
| 3&lt;br /&gt;
|-&lt;br /&gt;
| iso&lt;br /&gt;
| 1&lt;br /&gt;
|-&lt;br /&gt;
| n[hl]&lt;br /&gt;
| 2&lt;br /&gt;
|-&lt;br /&gt;
| [ae]d&lt;br /&gt;
| 2&lt;br /&gt;
|-&lt;br /&gt;
| lev&lt;br /&gt;
| 1&lt;br /&gt;
|-&lt;br /&gt;
| sh&lt;br /&gt;
| 1&lt;br /&gt;
|-&lt;br /&gt;
| [lnd]i&lt;br /&gt;
| 4&lt;br /&gt;
|-&lt;br /&gt;
| [po]o&lt;br /&gt;
| 3&lt;br /&gt;
|-&lt;br /&gt;
| ls&lt;br /&gt;
| 1&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
Randall's regular expression must be modified slightly, because it also matches {{w|John C. Fremont|John C. Fremo&amp;lt;u&amp;gt;nt&amp;lt;/u&amp;gt;}}, the runner-up to James Buchanan in 1856, as discussed by {{w|Peter Norvig}} at [http://nbviewer.ipython.org/url/norvig.com/ipython/xkcd1313.ipynb xkcd 1313: Regex Golf].  Note that Norvig provides a small amount of Python code which actually plays regex golf with arbitrary lists, and found a shorter solution than Randall's for the ''Star Wars'' vs ''Star Trek'' game.&lt;br /&gt;
&lt;br /&gt;
The regex does not match Donald Trump, who won over Hillary Clinton in 2016, and thus would need to be updated. The regex does match Hillary Clinton's last name, but because a person with the same last name (Bill Clinton) was president, this does not count as a mistake. There was already a losing opponent called George Clinton who ran in 1792 and 1812.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:Regex golf:&lt;br /&gt;
:[Megan is sitting at a laptop. Cueball is standing behind her.]&lt;br /&gt;
:Megan: You try to match one group but not the other.&lt;br /&gt;
:Megan: /m | [tn]|b/ matches ''Star Wars'' subtitles but not ''Star Trek''.&lt;br /&gt;
:Cueball: Cool.&lt;br /&gt;
&lt;br /&gt;
:Meta-regex golf:&lt;br /&gt;
:[A close-up of Megan at her laptop.]&lt;br /&gt;
:Megan: So I wrote a program that plays regex golf with arbitrary lists...&lt;br /&gt;
:Cueball (offscreen): Uh oh...&lt;br /&gt;
&lt;br /&gt;
:Meta-meta-regex golf:&lt;br /&gt;
:[Megan typing at her laptop.]&lt;br /&gt;
:Megan: ...But I lost my code, so I'm grepping for files that look like regex golf solvers.&lt;br /&gt;
:[Cueball facepalming.]&lt;br /&gt;
&lt;br /&gt;
:...And beyond:&lt;br /&gt;
:[Another closeup of Megan at her laptop.]&lt;br /&gt;
:Megan: Really, this is all /(meta-)*regex golf/.&lt;br /&gt;
:Cueball: Now you have ''infinite'' problems.&lt;br /&gt;
:Megan: No, I had those already.&lt;br /&gt;
&lt;br /&gt;
==Trivia==&lt;br /&gt;
*There are now at least four comics that reference regular expressions. The other three are: [[208: Regular Expressions]], [[224: Lisp]], and [[1171: Perl Problems]].&lt;br /&gt;
*Additionally, regular expressions are mentioned in the title text of [[1277: Ayn Random]].&lt;br /&gt;
*A regular expression is used in the [http://what-if.xkcd.com/75/ 75th] post of [[what if?]] to calculate the answer to that week's question.&lt;br /&gt;
*Also, Randall mentions [http://regex.alf.nu/ a website with a regexp golf game] he got distracted by while researching for the [http://what-if.xkcd.com/78/ 78th] post of [[what if?]] (which was published one day after this comic).&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Regex]]&lt;br /&gt;
[[Category:Star Trek]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1829:_Geochronology&amp;diff=139315</id>
		<title>1829: Geochronology</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1829:_Geochronology&amp;diff=139315"/>
				<updated>2017-04-27T07:48:49Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1829&lt;br /&gt;
| date      = April 26, 2017&lt;br /&gt;
| title     = Geochronology&lt;br /&gt;
| image     = geochronology.png&lt;br /&gt;
| titletext = 'The mountains near here formed when the ... Newfoundland ... microplate collided with, uhh ... Labrador.' 'Ok, now you're definitely just naming dogs.' 'Wait, no, that's actually almost correct.'&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
[[Ponytail]] is describing the origin of some rock formations to [[Megan]] and [[Cueball]]. She apparently forgot the names of the {{w|Plate tectonics|microplates}} and the {{w|Geologic time scale|age}} when the {{w|subduction}} occurred, so she substituties them with names of {{w|Dog breed|dog breeds}} ({{w|Dalmatian (dog)|Dalmatian}}, {{w|Laika (dog breed)|Laika}} and {{w|Pomeranian (dog)|Pomeranian}}) to seem knowledgeable and impress her audience. &lt;br /&gt;
&lt;br /&gt;
Although no microplates or geological ages with these names exist, this is not obvious for people outside of the field, as dog breeds are often named after geographic regions.  For example {{w|Dalmatia}} is the name of a region in {{w|Croatia}}, and a microplate named after it could exist (possibly as a fragment of the former {{w|Adriatic Plate}}). Likewise, a Laika Plate ''could'' be named after the {{w|Shepherd Islands|Laika Island}} in {{w|Vanuatu}} (although the dog's name is the Russian word лайка, literally meaning &amp;quot;barker&amp;quot;, and unrelated to the island). Geological ages are often named after place where the first rocks dating from the age were found e.g. the {{w|Devonian}} is named after the {{w|England|English}} county of {{w|Devon}}, while the {{w|Permian}} is named after the {{w|Russia|Russian}} city of {{w|Perm}}. Thus, a Pomeranian Age named after {{w|Pomerania}}, a region on the {{w|Baltic Sea}} split between {{w|Poland}} and {{w|Germany}}, might reasonably exist.&lt;br /&gt;
&lt;br /&gt;
So the comic concludes in the caption with one of Randall's many [[:Category:Tips|tips]], this time a geology tip, about how it is possible to pretend to be more knowledgeable regarding geology by just inserting dog breeds names instead of real names as no one remembers the names of all the microplates.&lt;br /&gt;
&lt;br /&gt;
The title text continues the situation until Ponytail starts to run out of dog breeds. Her audience catches on... until one of them chimes in that her &amp;quot;explanation&amp;quot; did name two real geological features: the dog breeds {{w|Labrador Retriever|Labrador}} and {{w|Newfoundland (dog)|Newfoundland}} are named after the two Canadian regions {{w|Labrador}} and {{w|Newfoundland}} respectively. Geologically, Labrador is the easternmost section of the {{w|Canadian Shield}}, the ancient core of the {{w|North America|North American}} continent. In contrast, Newfoundland (especially western Newfoundland) was formed from {{w|terrane|terranes}}, the remnants of a series of plates that collided with - and subducted beneath - North America. Some geologists have assigned the name &amp;quot;Newfoundland Plate&amp;quot; to one of these former microplates that Newfoundland now comprises. However, the title text explanation is not likely to be entirely accurate, because the most significant mountains in Newfoundland are the {{w|Long Range Mountains}}, which are the northernmost of the {{w|Appalachian Mountains}}, created when {{w|Africa}} and North America collided to form {{w|Pangaea}}; no mountain range is identified as being the result of the collision of the Newfoundland Plate with North America.&lt;br /&gt;
&lt;br /&gt;
Subduction was featured in a previous comic [[1388: Subduction License]].&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Ponytail is gesturing toward some rock formations in a grass field while addressing Megan and Cueball who are looking down at the rocks, Cueball with a hand to his chin.]&lt;br /&gt;
:Ponytail: This bedrock likely formed as the Dalmatian microplate subducted under East Laika during the Upper Pomeranian.&lt;br /&gt;
:Cueball: Ah, yes.&lt;br /&gt;
&lt;br /&gt;
:[Caption below the panel:]&lt;br /&gt;
:Geology Tip: There are so many microplates and ages that no one remembers them all, so in a pinch you can bluff with dog breeds.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Comics featuring Ponytail]]&lt;br /&gt;
[[Category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring Megan]]&lt;br /&gt;
[[Category:Tips]]&lt;br /&gt;
[[Category:Science]]&lt;br /&gt;
[[Category:Geography]]&lt;br /&gt;
[[Category:Animals]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1817:_Incognito_Mode&amp;diff=138285</id>
		<title>Talk:1817: Incognito Mode</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1817:_Incognito_Mode&amp;diff=138285"/>
				<updated>2017-04-04T02:54:22Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
Is this a new female character?{{unsigned ip|108.162.245.76}}&lt;br /&gt;
:I think it is just [[Blondie]]. She also has similar details in [[495: Secretary: Part 2]] and [[752: Phobia]]. Blondie is a generic character that has long blonde hair, which fits the bill. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 16:03, 29 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
This may be related to several news reports regarding an easter egg found in incognito mode (where a &amp;quot;wink&amp;quot; ;) emoticon shows in the &amp;quot;tab count&amp;quot; field if you have more than 100 tabs open - many news sites (independent, daily telegraph) are suggesting that this is google showing that they know their incognito mode is used to look at pornography (100+ tabs of it apparently!) [[User:Cprobertson1|Cprobertson1]] ([[User talk:Cprobertson1|talk]]) 14:32, 29 March 2017 (UTC)&lt;br /&gt;
:Did you just find the solution of how to end a parenthetical statement with an emoticon!? [[541: TED Talk]] [[User:625571b7-aa66-4f98-ac5c-92464cfb4ed8|625571b7-aa66-4f98-ac5c-92464cfb4ed8]] ([[User talk:625571b7-aa66-4f98-ac5c-92464cfb4ed8|talk]]) 14:48, 29 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Am I the only one who primarily uses Incognito mode for browsing, even on my personal computer and mobile device? I just don't want other people &amp;quot;accidentally&amp;quot; logging into my accounts if they borrow my device &amp;quot;just to check an email.&amp;quot; [[User:Nialpxe|Nialpxe]] ([[User talk:Nialpxe|talk]]) 14:48, 29 March 2017 (UTC)&lt;br /&gt;
:Not the only one. But one could basically say you are trapped in it forever... 15:01, 29 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
I have a habit of checking xkcd every few minutes to see if there is something new. I found this one after spending about 2 hours reading up on superheroes on incognito mode. (Because of that, this was one of the funniest ones so far for me! :)&lt;br /&gt;
&lt;br /&gt;
'''United States legislation'''&lt;br /&gt;
&lt;br /&gt;
It may be fair to mention this piece of legislation that has practically passed: https://arstechnica.com/tech-policy/2017/03/for-sale-your-private-browsing-history/ [[Special:Contributions/162.158.246.82|162.158.246.82]] 19:54, 29 March 2017 (UTC)&lt;br /&gt;
:Incognito mode does not save you from that. It only affects what data remains on your machine while that bill regulates what your ISP can do with the information they extract from the data you send over the wire. With HTTPS they can at least only see which servers you communicate with but that can be bad enough. The only way around that is to use a VPN (which wraps all communication in a secure channel to the VPN provider's server) but then you have to trust the VPN provider (and possibly their ISP) not to sell your data.--[[Special:Contributions/162.158.89.103|162.158.89.103]] 11:22, 30 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
::Not &amp;quot;possibly&amp;quot;. Using VPN can save you from '''your''' ISP but will give all those information to the '''VPN provider's''' ISP. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 01:23, 31 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
:::What I wanted to imply was a) with traffic from different VPN users using the same endpoint it's way harder to link individual connections to a specific user (especially with HTTPS when you can't rely on any request or response data) and b) you should always choose an endpoint in a country where ISPs can't legally sell that information. That way it's more important that you can trust your VPN provider than their ISP. Onion routing such as TOR can help with that but it has some disadvantages as well (especially speed and complexity). But in general you're right.--[[Special:Contributions/162.158.89.247|162.158.89.247]] 21:38, 31 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
:I got that impression too, that it's on Randall's mind, but I'm actually against adding such trivia unless the comic spells out the issue itself. (Also I'm personally just relieved that all the big ISPs came out and said &amp;quot;we didn't sell your data like that in the past and we're not about to do it now&amp;quot;) [[Special:Contributions/172.68.142.197|172.68.142.197]] 02:52, 4 April 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Wonder if today's comic (2017-03-31) will be the [[:Category:April fools' comics|April fools' comic]] of 2017, or if there will be an extra comic tomorrow - Saturday, or if today's comic won't even come out until tomorrow, to be released on April 1st, or if Randall will just skip it this year, as it is not a release day this year, after all the troubles he had with releasing [[Garden]] too late last year...?  I hope there will be one, because the last three years folls' comics have been great :-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 10:39, 31 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
The paragraph of explanation on Google Chrome's Incognito Mode used to mention &amp;quot;people standing behind you&amp;quot;, so I thought this was funny before I read the text when I had read just the title and seen the picture.  Is it worth mentioning something to this effect in the explanation?  There is an extra pun in the image because the speaker is standing behind the browser, I guess that could be the source of the initial ellipsis.  [[Special:Contributions/108.162.241.100|108.162.241.100]] 12:44, 2 April 2017 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1817:_Incognito_Mode&amp;diff=138283</id>
		<title>Talk:1817: Incognito Mode</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1817:_Incognito_Mode&amp;diff=138283"/>
				<updated>2017-04-04T02:52:54Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: &lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
Is this a new female character?{{unsigned ip|108.162.245.76}}&lt;br /&gt;
:I think it is just [[Blondie]]. She also has similar details in [[495: Secretary: Part 2]] and [[752: Phobia]]. Blondie is a generic character that has long blonde hair, which fits the bill. --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 16:03, 29 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
This may be related to several news reports regarding an easter egg found in incognito mode (where a &amp;quot;wink&amp;quot; ;) emoticon shows in the &amp;quot;tab count&amp;quot; field if you have more than 100 tabs open - many news sites (independent, daily telegraph) are suggesting that this is google showing that they know their incognito mode is used to look at pornography (100+ tabs of it apparently!) [[User:Cprobertson1|Cprobertson1]] ([[User talk:Cprobertson1|talk]]) 14:32, 29 March 2017 (UTC)&lt;br /&gt;
:Did you just find the solution of how to end a parenthetical statement with an emoticon!? [[541: TED Talk]] [[User:625571b7-aa66-4f98-ac5c-92464cfb4ed8|625571b7-aa66-4f98-ac5c-92464cfb4ed8]] ([[User talk:625571b7-aa66-4f98-ac5c-92464cfb4ed8|talk]]) 14:48, 29 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Am I the only one who primarily uses Incognito mode for browsing, even on my personal computer and mobile device? I just don't want other people &amp;quot;accidentally&amp;quot; logging into my accounts if they borrow my device &amp;quot;just to check an email.&amp;quot; [[User:Nialpxe|Nialpxe]] ([[User talk:Nialpxe|talk]]) 14:48, 29 March 2017 (UTC)&lt;br /&gt;
:Not the only one. But one could basically say you are trapped in it forever... 15:01, 29 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
I have a habit of checking xkcd every few minutes to see if there is something new. I found this one after spending about 2 hours reading up on superheroes on incognito mode. (Because of that, this was one of the funniest ones so far for me! :)&lt;br /&gt;
&lt;br /&gt;
'''United States legislation'''&lt;br /&gt;
&lt;br /&gt;
It may be fair to mention this piece of legislation that has practically passed: https://arstechnica.com/tech-policy/2017/03/for-sale-your-private-browsing-history/ [[Special:Contributions/162.158.246.82|162.158.246.82]] 19:54, 29 March 2017 (UTC)&lt;br /&gt;
:Incognito mode does not save you from that. It only affects what data remains on your machine while that bill regulates what your ISP can do with the information they extract from the data you send over the wire. With HTTPS they can at least only see which servers you communicate with but that can be bad enough. The only way around that is to use a VPN (which wraps all communication in a secure channel to the VPN provider's server) but then you have to trust the VPN provider (and possibly their ISP) not to sell your data.--[[Special:Contributions/162.158.89.103|162.158.89.103]] 11:22, 30 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
::Not &amp;quot;possibly&amp;quot;. Using VPN can save you from '''your''' ISP but will give all those information to the '''VPN provider's''' ISP. -- [[User:Hkmaly|Hkmaly]] ([[User talk:Hkmaly|talk]]) 01:23, 31 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
:::What I wanted to imply was a) with traffic from different VPN users using the same endpoint it's way harder to link individual connections to a specific user (especially with HTTPS when you can't rely on any request or response data) and b) you should always choose an endpoint in a country where ISPs can't legally sell that information. That way it's more important that you can trust your VPN provider than their ISP. Onion routing such as TOR can help with that but it has some disadvantages as well (especially speed and complexity). But in general you're right.--[[Special:Contributions/162.158.89.247|162.158.89.247]] 21:38, 31 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
:I got that impression too, but I'm actually against adding such trivia unless the comic spells out the issue itself. [[Special:Contributions/172.68.142.197|172.68.142.197]] 02:52, 4 April 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
Wonder if today's comic (2017-03-31) will be the [[:Category:April fools' comics|April fools' comic]] of 2017, or if there will be an extra comic tomorrow - Saturday, or if today's comic won't even come out until tomorrow, to be released on April 1st, or if Randall will just skip it this year, as it is not a release day this year, after all the troubles he had with releasing [[Garden]] too late last year...?  I hope there will be one, because the last three years folls' comics have been great :-) --[[User:Kynde|Kynde]] ([[User talk:Kynde|talk]]) 10:39, 31 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
The paragraph of explanation on Google Chrome's Incognito Mode used to mention &amp;quot;people standing behind you&amp;quot;, so I thought this was funny before I read the text when I had read just the title and seen the picture.  Is it worth mentioning something to this effect in the explanation?  There is an extra pun in the image because the speaker is standing behind the browser, I guess that could be the source of the initial ellipsis.  [[Special:Contributions/108.162.241.100|108.162.241.100]] 12:44, 2 April 2017 (UTC)&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1819:_Sweet_16&amp;diff=138281</id>
		<title>1819: Sweet 16</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1819:_Sweet_16&amp;diff=138281"/>
				<updated>2017-04-04T01:15:13Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1819&lt;br /&gt;
| date      = April 3, 2017&lt;br /&gt;
| title     = Sweet 16&lt;br /&gt;
| image     = sweet_16.png&lt;br /&gt;
| titletext = Every year I make out my bracket at the season, and every year it's busted before the first game when I find out which teams are playing.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Explain individual markings, explain title text}}&lt;br /&gt;
{{w|March Madness}}, with its championship on the day this comic was published, features 68 basketball teams in an elimination bracket. Due to the setup the final three rounds (including the championship game) feature 16 teams, and are sometimes called the &amp;quot;Sweet 16&amp;quot; (an American slang term also used to describe someone's 16th birthday).&lt;br /&gt;
&lt;br /&gt;
In this comic however, the bracket of the final 16 is not filled in with actual names, but descriptions of the odd circumstances of each team. For example, the first team is &amp;quot;a school with a dog on their team&amp;quot;, a reference to {{w|Air Bud}}. The team descriptions become increasingly bizarre, comprising varied sports and pop culture references and and often building on and playing off of previous team descriptions.&lt;br /&gt;
&lt;br /&gt;
The first four teams on the left are comprised partially or completely of pets. The next two teams consist of some form of baseball-basketball crossover. The bottom two teams on the left feature developers and players of NBA 2k17, a basketball video game by 2K Games.&lt;br /&gt;
&lt;br /&gt;
The first team on the right, the 1988 LA Lakers is an actual NBA team. They are paired against a team of four kindergarteners and current Cleveland player Lebron James (born 1984), who was also a kindergartner in 1988.&lt;br /&gt;
&lt;br /&gt;
The next two teams feature basketball-boxing crossovers. The bracket after that features teams on unconventional mobility aids, Segways and stilts.&lt;br /&gt;
&lt;br /&gt;
The final two teams are Cinderella teams. A Cinderella story is when a weak team works hard to achieve success. The final team consists of players wearing glass slippers, often a part of the Cinderella fairy tale.&lt;br /&gt;
&lt;br /&gt;
The title text explains what the heck [[Randall]] was doing to make this comic: Randall is incredibly out of touch with sports. During March Madness a popular pastime is to take a look at the starting bracket of all 68 teams and speculate who will win each round. Randall, when handed a blank bracket, instead fills it with teams he ''wants'' to see play rather than who is actually in the tournament.&lt;br /&gt;
&lt;br /&gt;
Related to [[1529: Bracket]]&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[The comic shows a direct elimination bracket (a single-elimination tournament): there is a single match played by every pair of teams, and the winners of those matches are paired up for the next round of matches, this continues until there are no more matches to be played. There are sixteen teams described here (hence the number in the title), eight on each side of the empty rectangle in the middle. Every two teams are connected, these connectors are then also connected, these connectors are yet again connected, and a final pair of connectors, after making one counter-clockwise right angle turn, end up in the top and bottom edges of the central rectangle. The bracket is empty, no results of any of the matches are indicated.]&lt;br /&gt;
&lt;br /&gt;
:{| class=&amp;quot;wikitable&amp;quot; style=&amp;quot;background:transparent;border:none;width:100%;&amp;quot;&lt;br /&gt;
| style=&amp;quot;background:transparent;border:none;&amp;quot; |&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;A school with a dog on their team&lt;br /&gt;
&amp;lt;br/&amp;gt;A school whose team is entirely dogs&lt;br /&gt;
&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;A dog team with one human&lt;br /&gt;
&amp;lt;br/&amp;gt;A dog team with one cat&lt;br /&gt;
&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;A baseball team playing basketball&lt;br /&gt;
&amp;lt;br/&amp;gt;A basketball team with baseball gear&lt;br /&gt;
&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;NBA2K17 top players&lt;br /&gt;
&amp;lt;br/&amp;gt;NBA2K17 top developers&lt;br /&gt;
&lt;br /&gt;
| style=&amp;quot;background:transparent;border:none;&amp;quot; |&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;The 1988 Los Angeles lakers&lt;br /&gt;
&amp;lt;br/&amp;gt;Four kindergarteners and Lebron James&lt;br /&gt;
&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;Boxers playing basketball&lt;br /&gt;
&amp;lt;br/&amp;gt;Basketball players in boxing gloves&lt;br /&gt;
&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;A team playing on stilts&lt;br /&gt;
&amp;lt;br/&amp;gt;A team playing on Segways&lt;br /&gt;
&lt;br /&gt;
&amp;lt;br/&amp;gt;[These are paired.]&lt;br /&gt;
&amp;lt;br/&amp;gt;A bad team that would make a good Cinderella story&lt;br /&gt;
&amp;lt;br/&amp;gt;A good team playing in glass slippers&lt;br /&gt;
&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=127:_The_Fast_and_the_Furious&amp;diff=138171</id>
		<title>127: The Fast and the Furious</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=127:_The_Fast_and_the_Furious&amp;diff=138171"/>
				<updated>2017-03-31T18:03:15Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: /* Explanation */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 127&lt;br /&gt;
| date      = July 12, 2006&lt;br /&gt;
| title     = The Fast and the Furious&lt;br /&gt;
| image     = the_fast_and_the_furious.jpg&lt;br /&gt;
| titletext = Sometimes when I steer shopping carts around corners, I slide them a little and pretend I'm getting the blue spark boost.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This comic shows an imagined crossover between the film ''{{w|The Fast and the Furious: Tokyo Drift}}'' and video game series ''{{w|Mario Kart}}'', specifically the entry &amp;quot;Mario Kart: Double Dash!!&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
In ''Tokyo Drift'' the protagonist is trying to break into the underground street racing ring, and finds that the urban environment of Tokyo is far different than the rural American roads he is used to. The Asian street racers soundly beat him until he is able to master {{w|oversteer}}ing, known in both the movie and in ''Mario Kart'' as &amp;quot;drifting&amp;quot;.&lt;br /&gt;
&lt;br /&gt;
In ''Mario Kart'', drifting is a gameplay mechanic, and during a proper drift the kart would create a splay of blue sparks and give a small, temporary &amp;quot;mini-boost&amp;quot; to the speed of the kart.&lt;br /&gt;
&lt;br /&gt;
At the title text [[Randall]] jokes about shopping in a supermarket; when he steers his shopping cart around a corner he pretends that he is getting the blue boost sparks.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:On the other side of the world, a new style of street racing rules the Tokyo underground. The cars are lighter, the tires are slick. When you drift, if you ain't out of control, you ain't in control. And if you work the wheel back and forth just right,&lt;br /&gt;
:[Two cars race around a corner with blue sparks spraying from their tires.]&lt;br /&gt;
:You get blue sparks.&lt;br /&gt;
:THE FAST AND THE FURIOUS: ''TOKYO DASH!!''&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
[[Category:Comics with color]]&lt;br /&gt;
[[Category:Video games]]&lt;br /&gt;
[[Category:Mario Kart]]&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:1816:_Mispronunciation&amp;diff=137951</id>
		<title>Talk:1816: Mispronunciation</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:1816:_Mispronunciation&amp;diff=137951"/>
				<updated>2017-03-27T17:04:30Z</updated>
		
		<summary type="html">&lt;p&gt;172.68.142.197: Deleting my comment, I forgot this was wiki discussion&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;&amp;lt;!--Please sign your posts with ~~~~--&amp;gt;&lt;br /&gt;
Epitome is an interesting one for me, since I read it phonetically (same as Randal's example), and didn't figure out that &amp;quot;e-pi-tō-mē&amp;quot; and &amp;quot;eppy-tome&amp;quot; were the same word until mid to late teens. I still have to stop myself from reading it wrong when I see it on the page... [[User:Andyd273|Andyd273]] ([[User talk:Andyd273|talk]]) 15:21, 27 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
I think there's another level beyond the obvious, especially in the title text. You're pronouncing the word 'epitome' in whatever way you always have (inside your head), he's making clear that he's not saying it the way you say it.. so how do you read the comic? The sentence only makes sense if you say it aloud, but you can't because you don't know how he's pronouncing it.[[User:Xseo|Xseo]] ([[User talk:Xseo|talk]]) 16:04, 27 March 2017 (UTC)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
Related: https://en.wikipedia.org/wiki/Epitome_of_Hyperbole&lt;/div&gt;</summary>
		<author><name>172.68.142.197</name></author>	</entry>

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