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		<title>explain xkcd - User contributions [en]</title>
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		<updated>2026-04-15T12:20:11Z</updated>
		<subtitle>User contributions</subtitle>
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	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2452:_Aviation_Firsts&amp;diff=210540</id>
		<title>2452: Aviation Firsts</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2452:_Aviation_Firsts&amp;diff=210540"/>
				<updated>2021-04-20T02:29:18Z</updated>
		
		<summary type="html">&lt;p&gt;108.162.215.249: /* Events referenced */ explain title text&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2452&lt;br /&gt;
| date      = April 19, 2021&lt;br /&gt;
| title     = Aviation Firsts&lt;br /&gt;
| image     = aviation_firsts.png&lt;br /&gt;
| titletext = Mile High Club membership [✓] [ ] Discovery of parts of Amelia Earhart's skeleton [ ] [ ] Mid-flight incident that results in safe landing on the Hudson River [✓] [ ]&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by DRONE ON MARS. Put a table detailing all the event of the achievement checklist with an Earth and Mars column. Do NOT delete this tag too soon.}}&lt;br /&gt;
This comic is made in light of recent events of the [https://twitter.com/NASAPersevere/status/1384209173924089863 Ingenuity probe's first flight on Mars]. Now that Ingenuity has completed its first flight, it marks the first controlled powered flight on Mars. The previous categories were completed by the first space probes to reach and then land on Mars, while the remaining have only been completed on Earth, and grow steadily bizarre, extending to the title text.&lt;br /&gt;
&lt;br /&gt;
===Events referenced===&lt;br /&gt;
* Development of the {{w|Hughes H-4 Hercules}}, a wooden airplane, which flew (once) in 1947&lt;br /&gt;
* The 1971 hijacking of Northwest Orient Airlines flight 305 by a man who bought a ticket under the pseudonym {{w|D. B. Cooper|&amp;quot;Dan Cooper&amp;quot;}} (but popularly known as D. B. Cooper). Cooper was given a $200,000 ransom and then he jumped out of the plane and was never found.&lt;br /&gt;
&lt;br /&gt;
The title text refers to the following:&lt;br /&gt;
* The {{w|mile high club}} is a slang term which refers to having sex while onboard an airplane.&lt;br /&gt;
* {{w|Amelia Earhart}} was a female aviator who went missing in 1937 and has never been found.&lt;br /&gt;
* The {{w|US Airways Flight 1549|Miracle on the Hudson}} was a 2009 incident in which a plane struck a flock of birds shortly after takeoff and lost both its engines. Captain Sully Sullenberger successfully landed the plane in the Hudson River (in New York) with minimal injuries to the passengers onboard.&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;br /&gt;
[[Category:Mars rovers]]&lt;br /&gt;
[[Category:Charts]]&lt;/div&gt;</summary>
		<author><name>108.162.215.249</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=2442:_Mask_Opinions&amp;diff=209038</id>
		<title>2442: Mask Opinions</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=2442:_Mask_Opinions&amp;diff=209038"/>
				<updated>2021-03-27T15:23:20Z</updated>
		
		<summary type="html">&lt;p&gt;108.162.215.249: /* Explanation */ (It is not stated whether he hopes for an end to the coronavirus pandemic simply so that he can stop hearing Cueball talk about masks or because of the lives that would be lost if the pandemic continued.)&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 2442&lt;br /&gt;
| date      = March 26, 2021&lt;br /&gt;
| title     = Mask Opinions&lt;br /&gt;
| image     = mask_opinions.png&lt;br /&gt;
| titletext = Although regardless of how everything else shakes out, I definitely won't mind if the norm &amp;quot;wear a mask if you're feeling sick&amp;quot; sticks around after this.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Created by a SEAL ON THE BRIDGE OF YOUR NOSE. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.}}&lt;br /&gt;
&lt;br /&gt;
[[Cueball]] and [[White Hat]] are having a conversation about face masks, which have become everyday essentials during the COVID-19 pandemic. Cueball has become exasperated with the weight of mask-related knowledge on his mind at all times, citing examples of instances of conversation in which he irritably divulges his knowledge of face masks. White Hat tries to placate him with the idea that this won't go on forever. He suggests thinking and talking about other things, but given Cueball's obsessive tendencies in the past, this is unlikely to occur. The final words of the comic, &amp;quot;Well. Soon.&amp;quot; may be a pun on the phrase &amp;quot;Get Well Soon&amp;quot;, commonly said as an expression of sympathy for someone who is sick or injured. In this case, White Hat hopes that Cueball will be able to stop talking about masks soon, which in turn means that he hopes for an end to the coronavirus pandemic.  (It is not stated whether he hopes for an end to the coronavirus pandemic simply so that he can stop hearing Cueball talk about masks or because of the lives that would be lost if the pandemic continued.)&lt;br /&gt;
&lt;br /&gt;
In the title text, Randall implicitly endorses White Hat's hope, while suggesting that the new norm of wearing a mask when you feel sick will still be useful after the pandemic ends. Given that masks lower the transmission rates of many viral infections, including the common cold, this could be a wise strategy for avoiding illnesses in the future. Eliminating the common cold through masks, in this case via hazmat suits, has been examined in the ''What If?'' chapter 'Common Cold'.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Cueball and White Hat are standing and talking. Both are wearing masks.]&lt;br /&gt;
:Cueball: I am so excited not to have so many opinions about different kinds of masks at the forefront of my brain at all times.&lt;br /&gt;
:White Hat: Seriously.&lt;br /&gt;
&lt;br /&gt;
:[The panel is zoomed in on Cueball's upper body. His hands are raised.]&lt;br /&gt;
:Cueball: &amp;quot;Do you know any tricks for getting a good seal around the bridge of your nose?&amp;quot;&lt;br /&gt;
:Cueball: I '''''do,''''' and I want to '''''stop''''' knowing them.&lt;br /&gt;
&lt;br /&gt;
:[Cueball is walking away from White Hat with his hands raised above his head.]&lt;br /&gt;
:White Hat: You could always try talking about something else.&lt;br /&gt;
:Cueball: '''''Honestly not sure I can!'''''&lt;br /&gt;
:White Hat: Well.&lt;br /&gt;
:White Hat: Soon.&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[category:Comics featuring Cueball]]&lt;br /&gt;
[[Category:Comics featuring face masks]]&lt;br /&gt;
[[Category:Comics featuring White Hat]]&lt;br /&gt;
[[Category:COVID-19]]&lt;/div&gt;</summary>
		<author><name>108.162.215.249</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1762:_Moving_Boxes&amp;diff=131349</id>
		<title>1762: Moving Boxes</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1762:_Moving_Boxes&amp;diff=131349"/>
				<updated>2016-11-21T23:37:52Z</updated>
		
		<summary type="html">&lt;p&gt;108.162.215.249: /* Explanation of boxes */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1762&lt;br /&gt;
| date      = November 21, 2016&lt;br /&gt;
| title     = Moving Boxes&lt;br /&gt;
| image     = moving_boxes.png&lt;br /&gt;
| titletext = Later, when I remember that I'm calling movers, I frantically scribble over the labels and write 'NORMAL HOUSE STUFF' on all of them, which actually makes things worse.&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Fill table}}&lt;br /&gt;
[[Randall]] talks about moving boxes and not labeling them until he forgets what's in them. Since he doesn't know what's in them, he writes silly things on the boxes as a joke. Some things are unusual/unlikely (e.g. sand, hydrants, peat) and some are abstract/impossible (e.g. elves, taupe, dark matter). Several of the categories overlap confusingly; for instance, &amp;quot;sand&amp;quot; and &amp;quot;silt&amp;quot; and &amp;quot;dark matter&amp;quot; are all generally considered as &amp;quot;particles&amp;quot;; &amp;quot;membranes&amp;quot;, &amp;quot;edges&amp;quot;, and &amp;quot;shawls&amp;quot; are all kinds of &amp;quot;manifolds&amp;quot;; &amp;quot;hooves&amp;quot; are part of &amp;quot;bison&amp;quot;; &amp;quot;fog&amp;quot; contains &amp;quot;water&amp;quot;; and &amp;quot;triangles&amp;quot; consist of three &amp;quot;edges&amp;quot;. Another way to interpret this comic is that Randall actually has these items (or at least some of them) in the boxes and has simply forgotten which boxes contain what.&lt;br /&gt;
&lt;br /&gt;
===Explanation of boxes===&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot; width=&amp;quot;100%&amp;quot;&lt;br /&gt;
!Label&lt;br /&gt;
!Explanation&lt;br /&gt;
|-&lt;br /&gt;
!Box 1&lt;br /&gt;
|-&lt;br /&gt;
|Grids|| [https://en.wiktionary.org/wiki/grid Grids] are mathematical drawings; they would be constructed by drawing them, not stored in a box (though {{w|graph paper}} might be). May refer to a classic {{w|snipe hunt}} where a hazing victim is tasked with finding &amp;quot;a box of grid squares&amp;quot;.&lt;br /&gt;
|-&lt;br /&gt;
|Bison||{{w|Bison}}, sometimes mistakenly called buffalo, are large animals{{Citation needed}} that would probably not fit in the box{{Citation needed}}.&lt;br /&gt;
|-&lt;br /&gt;
|Checkerboards||A tabletop gaming board on which one plays {{w|English draughts|Checkers}}.&lt;br /&gt;
|-&lt;br /&gt;
|Fog||{{w|Fog}} is essentially low-lying clouds which, being gaseous, are hard to box using only cardboard.&lt;br /&gt;
|-&lt;br /&gt;
!Box 2&lt;br /&gt;
|-&lt;br /&gt;
|Beacons||A device designed to draw attention to itself, for various reasons. From the generic term &amp;quot;beacon&amp;quot; this could mean anything from electronic GPS locator beacons to miniature replicas of naval lighthouses.&lt;br /&gt;
|-&lt;br /&gt;
|Elves||A fictional race (or rather, [http://tvtropes.org/pmwiki/pmwiki.php/Main/OurElvesAreBetter many, many fictional races]) of human-like magical creatures.&lt;br /&gt;
|-&lt;br /&gt;
|Sand||Fine particles of rock. While it's not unheard of for people to need to store sand, it's usually not stored along with your personal belongings on moving day.&lt;br /&gt;
|-&lt;br /&gt;
!Box 3&lt;br /&gt;
|-&lt;br /&gt;
|Hemoglobin||{{w|Hemoglobin}} is the protein found in red blood cells that carries oxygen around the body. This may be a solution of hemoglobin protein, but one human generally would not need a full box of it{{Citation needed}}.&lt;br /&gt;
|-&lt;br /&gt;
!Box 4&lt;br /&gt;
|-&lt;br /&gt;
|Water||As with sand, it's not unheard of for, say, a laboratory to store water samples for testing. But again, these wouldn't be stored along with your personal belongings on moving day. And if this is meant to be drinking water, it would be a waste of effort; it's taken as red that any house you're moving into has its own plumbing.&lt;br /&gt;
|-&lt;br /&gt;
|Hooves||{{w|Hooves}} are possibly best-known as horse and cow 'feet'. This could also be read as a compound word, Water-Hooves akin to water-wings. &lt;br /&gt;
|-&lt;br /&gt;
!Box 5&lt;br /&gt;
|-&lt;br /&gt;
|Shorebirds|| Birds which live by the shore{{Citation needed}}.&lt;br /&gt;
|-&lt;br /&gt;
!Box 6&lt;br /&gt;
|-&lt;br /&gt;
|Oil|| Again, hard to store in boxes.{{Citation needed}}&lt;br /&gt;
|-&lt;br /&gt;
|Vectors||{{w|Vector}}s are points on geometric shapes, not physical objects, so they cannot be put in boxes.&lt;br /&gt;
|-&lt;br /&gt;
|Silt|| Material between sand and clay sizewise. A sediment.&lt;br /&gt;
|-&lt;br /&gt;
!Box 7&lt;br /&gt;
|-&lt;br /&gt;
|Membranes||Delicate thin pliable sheet or skin of various kinds. Usually fragile or cut easily. Not something you would expect to be packed with something sharp, which shards are likely to be, although these labels are incorrect.&lt;br /&gt;
|-&lt;br /&gt;
|Shards||Broken pieces of smooth and hard objects, e.g. ceramic, glass, crystal. Something you would normally expect to be thrown out, rather than packed up for moving house.&lt;br /&gt;
|-&lt;br /&gt;
!Box 8&lt;br /&gt;
|-&lt;br /&gt;
|Shawls||{{w|Shawls}} are a simple item of clothing, worn loosely over one's shoulders. Also being of rectangular shape, they are supposed to be worn in colder weather.&lt;br /&gt;
|-&lt;br /&gt;
|Glucose||{{w|Glucose}} is possibly best-known as the sugar plants produce for energy, but can be manufactured.&lt;br /&gt;
|-&lt;br /&gt;
|Kits||A {{w|kit}} is any set of tools, supplies, and/or instructions for a specific purpose. These could be first aid kits, software development kits, bomb-making kits, sewing kits... Alternatively, this may be a compound word &amp;quot;Glucose Kits&amp;quot;, diabetic assay tools to help the patient regulate their blood sugar.&lt;br /&gt;
|-&lt;br /&gt;
!Box 9&lt;br /&gt;
|-&lt;br /&gt;
|Hydrants||{{w|Fire hydrant}}s are likely too big to fit in boxes, and are also simply odd objects to be packing into a box.&lt;br /&gt;
|-&lt;br /&gt;
|Particles||As almost all matter is composed of {{w|particles}}, it is hard to find exceptions. Thus, this is very vague.&lt;br /&gt;
|-&lt;br /&gt;
|Knots||&lt;br /&gt;
|-&lt;br /&gt;
!Box 10&lt;br /&gt;
|-&lt;br /&gt;
|Graphite||&lt;br /&gt;
|-&lt;br /&gt;
|Taupe|| {{w|Taupe}} is a dark tan color in between brown and gray, again, not an object.&lt;br /&gt;
|-&lt;br /&gt;
!Box 11&lt;br /&gt;
|-&lt;br /&gt;
|Field Lines||This could refer to {{w|field line}}s as used to depict electromagnetic force fields, or possibly to the lines painted on an athletic field to mark the boundaries of play. The former are a visualization tool rather than physical objects; the latter consist of streaks of paint on grass or artificial turf, and thus neither kind of field line is the kind of physical object that could be packed into a box. &lt;br /&gt;
|-&lt;br /&gt;
!Box 12&lt;br /&gt;
|-&lt;br /&gt;
|Traps||May be a reference to 'My house is full of traps' from [https://what-if.xkcd.com/34// What-If #34]&lt;br /&gt;
|-&lt;br /&gt;
!Box 13&lt;br /&gt;
|-&lt;br /&gt;
|Edges||&lt;br /&gt;
|-&lt;br /&gt;
|Tribes||&lt;br /&gt;
|-&lt;br /&gt;
|Dough||&lt;br /&gt;
|-&lt;br /&gt;
!Box 14&lt;br /&gt;
|-&lt;br /&gt;
|Dark Matter||{{w|Dark matter}}&lt;br /&gt;
|-&lt;br /&gt;
!Box 15&lt;br /&gt;
|-&lt;br /&gt;
|Manifolds||Manifolds are akin to {{w|topological}} {{w|universe}}s.&lt;br /&gt;
|-&lt;br /&gt;
!Box 16&lt;br /&gt;
|-&lt;br /&gt;
|Triangles||Within the context of this comic, the reference is likely to the shape. On the other hand, it would not be unusual to pack one or more {{w|Triangle (musical instrument)}}s into a box.&lt;br /&gt;
|-&lt;br /&gt;
|Peat|| {{w|Peat}}is an accumulation of partially decayed vegetation that forms in wetland bogs, moors, mires, and swamps.&lt;br /&gt;
|-&lt;br /&gt;
|Crowns|| May be royal crowns, or may be the coin worth five shillings in UK pre-decimal currency.&lt;br /&gt;
|-&lt;br /&gt;
!Box 17&lt;br /&gt;
|-&lt;br /&gt;
|Scrolls||A {{w|scroll}} is a roll of papyrus, paper, or parchment that contains writing.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
According to the title text, when Randall remembers that he is calling movers, he frantically scribbles &amp;quot;Normal House Stuff&amp;quot; on all the boxes. He says this makes the situation worse, possibly because the movers see the scribble and become suspicious. Alternatively, labeling every box with the exact same phrase will make it even harder to figure out what they contain and where they should go in the new dwelling.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
[A bunch of cardboard boxes stacked up, each labeled]&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
| style=&amp;quot;visibility:hidden&amp;quot; |&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; height=&amp;quot;80px&amp;quot; width=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Grids&amp;lt;br&amp;gt;&lt;br /&gt;
Bison&amp;lt;br&amp;gt;&lt;br /&gt;
Checkerboards&amp;lt;br&amp;gt;&lt;br /&gt;
Fog&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot;|&lt;br /&gt;
Beacons&amp;lt;br&amp;gt;&lt;br /&gt;
Elves&amp;lt;br&amp;gt;&lt;br /&gt;
Sand&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Hemoglobin&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Water&amp;lt;br&amp;gt;&lt;br /&gt;
Hooves&lt;br /&gt;
| style=&amp;quot;visibility:hidden&amp;quot; |&lt;br /&gt;
|-|&lt;br /&gt;
| style=&amp;quot;visibility:hidden&amp;quot; |&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Shorebirds&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Oil&amp;lt;br&amp;gt;&lt;br /&gt;
Vectors&amp;lt;br&amp;gt;&lt;br /&gt;
Silt &lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Membranes&amp;lt;br&amp;gt;&lt;br /&gt;
Shards&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Shawls&amp;lt;br&amp;gt;&lt;br /&gt;
Glucose&amp;lt;br&amp;gt;&lt;br /&gt;
Kits&lt;br /&gt;
| style=&amp;quot;visibility:hidden&amp;quot; |&lt;br /&gt;
|-|&lt;br /&gt;
| style=&amp;quot;visibility:hidden&amp;quot; |&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Hydrants&amp;lt;br&amp;gt;&lt;br /&gt;
Particles&amp;lt;br&amp;gt;&lt;br /&gt;
Knots&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Graphite&amp;lt;br&amp;gt;&lt;br /&gt;
Taupe&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Field Lines&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Traps&lt;br /&gt;
| style=&amp;quot;visibility:hidden&amp;quot; |&lt;br /&gt;
|-|&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Edges&amp;lt;br&amp;gt;&lt;br /&gt;
Tribes&amp;lt;br&amp;gt;&lt;br /&gt;
Dough&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Dark Matter&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Manifolds&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Triangles&amp;lt;br&amp;gt;&lt;br /&gt;
Peat&amp;lt;br&amp;gt;&lt;br /&gt;
Crowns&lt;br /&gt;
| colspan=&amp;quot;2&amp;quot; width=&amp;quot;80px&amp;quot; height=&amp;quot;80px&amp;quot; |&lt;br /&gt;
Scrolls&lt;br /&gt;
|}&lt;br /&gt;
[A caption:]&lt;br /&gt;
I always forget to label my moving boxes until they're sealed up and I've forgotten what's in them.&lt;br /&gt;
{{comic discussion}}&lt;/div&gt;</summary>
		<author><name>108.162.215.249</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1729:_Migrating_Geese&amp;diff=126293</id>
		<title>1729: Migrating Geese</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1729:_Migrating_Geese&amp;diff=126293"/>
				<updated>2016-09-07T05:58:55Z</updated>
		
		<summary type="html">&lt;p&gt;108.162.215.249: /* Table of labels */&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1729&lt;br /&gt;
| date      = September 5, 2016&lt;br /&gt;
| title     = Migrating Geese&lt;br /&gt;
| image     = migrating_geese.png&lt;br /&gt;
| titletext = &amp;quot;Hey guys! I have a great idea for a migration!&amp;quot; &amp;quot;Dammit, Kevin.&amp;quot;&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
{{incomplete|Is there not some kind of slang on &amp;quot;Head Goose&amp;quot; that could relate to the fourth in line to the GB throne? Who are the three first in line to the throne? (both to be put in the table). More on the title text: &amp;quot;An idea for A migration?&amp;quot;.}}&lt;br /&gt;
{{w|Bird migration|Migrating}} refers to the changing of a habitat, which happens every year with birds like {{w|geese}} that travels a long distances to avoid cold seasons and get back to the food in the summer time. When geese fly to their new habitat they tend to fly in a very clear {{w|V formation}}. The V formation improves the efficiency of flying birds, particularly over long migratory routes. All the birds except the first fly in the upwash from one of the wingtip vortices of the bird ahead. The upwash assists each bird except for the &amp;quot;leading&amp;quot; one in supporting its own weight in flight, saving them up to 20% of the energy needed.&lt;br /&gt;
&lt;br /&gt;
It should be noted that geese do have family structures with adult geese in ''alpha'' positions, but not a strict ranking order. An individuals position in formation flights is coincidental and constantly changing, so that the goose at the point of the formation can pull back and rest in the V wings while others ''lead'' the swarm. Popular earlier beliefs about an ''alpha goose'' heading a formation for the entire flight is a myth, easily disproven by watching geese formations in flight. &lt;br /&gt;
&lt;br /&gt;
This comic shows such a formation with 20 geese, but several of the geese and areas in the V formation is explained with labels giving different roles to the geese and assigning these areas a new meaning. See the [[#Table of labels|table below]].&lt;br /&gt;
&lt;br /&gt;
Apart from a ''twin engine'' goose in the bottom right arm of the V the only part of the formation that would not normally be seen is Kevin, who flies off at a 45 degree angle. In that direction there is no aerodynamic help from the other birds, and in the title text the rest of the geese also exclaims, &amp;quot;Dammit, Kevin&amp;quot; when he (again?) tells them that he has a great new idea for a migration (maybe referring to the new direction).&lt;br /&gt;
&lt;br /&gt;
===Table of labels===&lt;br /&gt;
{| class=&amp;quot;wikitable&amp;quot;&lt;br /&gt;
!Name&lt;br /&gt;
!Explanation&lt;br /&gt;
|-&lt;br /&gt;
|Head Goose&lt;br /&gt;
(4th in line to the British throne)&lt;br /&gt;
|This goose may become the newest monarch of the UK, assuming the three who are further in line die. The current fourth in line to the British throne is {{w|HRH}} {{w|Princess Charlotte of Cambridge}}. In North America, the best-known goose migration is that of {{w|Canada goose|Canada geese}} to the US east coast.  Canada used to be part of the {{w|British Empire}} and remains a member of the {{w|Commonwealth of Nations}}, so a &amp;quot;Canadian&amp;quot; goose would be well situated to stand within the succession. &lt;br /&gt;
|-&lt;br /&gt;
|Quarterback&lt;br /&gt;
|A {{w|quarterback}} is a position in {{w|American football}}, usually placed in the second row of an American football formation just like the associated goose. On nearly every non-kicking play, the quarterback is the player who stands behind the center and receives the ball to start the play. In modern American football, the quarterback is usually considered the leader of the team, and is often responsible for calling the play.&lt;br /&gt;
|-&lt;br /&gt;
|Comptroller&lt;br /&gt;
|A {{w|comptroller}} is a position in a company. A comptroller oversees and manages all financial operations.  &lt;br /&gt;
|-&lt;br /&gt;
|Migration abort goose&lt;br /&gt;
|This might be a reference to launch abort capsules used in rockets to safely land astronauts in the case of a critical stage failure. Or it could be operated like an abort button aborting the entire migration for all geese.&lt;br /&gt;
|-&lt;br /&gt;
|Twin-Engine Model&lt;br /&gt;
|This goose has two tails offset on each side of the center of the goose, instead of one tail in the middle like the rest. The &amp;quot;tails&amp;quot; also extend beyond the wings, which makes it look like a Twin-Engine aircraft, which has two motors: one on each wing instead of one in the nose.&lt;br /&gt;
|-&lt;br /&gt;
|CIA Informant&lt;br /&gt;
|A person, usually a criminal, that surreptitiously provides information to the {{w|Central Intelligence Agency}} (CIA). If these geese are from Canada, the CIA might have inserted an informant to be kept up to date on their activities.&lt;br /&gt;
|-&lt;br /&gt;
|Backups&lt;br /&gt;
|These are geese that are not used in the formation so they can replace other geese in their positions in case they have problems performing their task. This may also be a pun/joke about technology/data &amp;quot;migrations&amp;quot; where backups should be taken liberally due to risk of data loss.&lt;br /&gt;
|-&lt;br /&gt;
|Shock Front&lt;br /&gt;
| A shock front is the front boundary of a {{w|shock wave}} created by either a {{w|sonic boom}} or another explosion in a fluid/gas. It can also refer to the shock wave itself. It usually only happens when such violent events occur, and would thus not be present in front of &amp;quot;normally&amp;quot; migrating geese. But of course this set of geese may be somewhat different with the involvement of CIA and stealth technology.&lt;br /&gt;
|-&lt;br /&gt;
|Missing Valence Geese&lt;br /&gt;
|In Chemistry, {{w|Valence (chemistry)|valence}} electrons are the electrons in the outermost &amp;quot;layer&amp;quot; which change places when chemical reactions happen. As there is an optimal number of electrons in a layer, if there are missing valence electrons, atoms which can fill in these gaps tend to react with the atoms having the missing electrons. In case of &amp;quot;electron sharing&amp;quot; (aka. covalent bond) molecules result from such an encounter. The comic suggests, a second geese formation that has proper &amp;quot;valence geese&amp;quot; in the appropriate position could bond (=merge) with this one into a larger formation. A normal geese V formation like the one in the comic has one side longer than the other and this is possibly Randall's explanation for the phenomenon.&lt;br /&gt;
In reality, geese do form V-shaped flocks, since the rear geese can profit aerodynamically from the vortices created by the front geese, and that way the overall flock requires less energy. So there is actually some evolutionary sense for additional geese to fill the &amp;quot;valence holes&amp;quot;. It is thus a little weird that there are two backup geese close to these valence vacancies, as they should then have filled them up...&lt;br /&gt;
|-&lt;br /&gt;
|Stealth cargo being escorted	&lt;br /&gt;
|The formation is forming a protective surrounding around an empty space in the middle which in a military formation could contain protected cargo. As there is no cargo visible in the geese formation, it is titled &amp;quot;{{w|Stealth technology|stealth}}&amp;quot;. This would be a nice [[:Category:Conspiracy theory|conspiracy theory]] to spread.&lt;br /&gt;
|-&lt;br /&gt;
|Kevin&lt;br /&gt;
|Also mentioned in the title text. It is unclear what the name refers to. It May refer to:&lt;br /&gt;
* The &amp;quot;go to name&amp;quot; for [[Randall]] at the time of this comics release, as he also used the name in [[1719: Superzoom]], ten comics before this one.&lt;br /&gt;
* An {{w|Eddie Izzard}} skit about migrating birds (Eddie Izzard - Religions, Cats &amp;amp; Migrating Birds). A group of birds are following Kevin, assuming that he knows where he is going. But he is lost and they end up in the wrong place.&lt;br /&gt;
* Kevin Mcallister, from the {{w|Home Alone}} movies, who gets separated from his parents a lot. (see [[1164: Home Alone]]).&lt;br /&gt;
* [https://www.reddit.com/r/AskReddit/comments/219w2o/whos_the_dumbest_person_youve_ever_met/cgbhkwp Kevin of reddit fame], the dumbest person ever.&lt;br /&gt;
* One of the {{w|Minions (Despicable Me)|Minions}} from the &amp;quot;{{w|Despicable Me}}&amp;quot; franchise ([http://despicableme.wikia.com/wiki/Kevin Kevin]), who leaves the main Minion group in search of a new master.&lt;br /&gt;
* The intelligent and playful bird,[http://disney.wikia.com/wiki/Kevin Kevin], from the Disney/Pixar movie {{w|Up (movie)|Up}}. &lt;br /&gt;
* [https://youtu.be/OyqdoxTEmdg Kevin] from {{w|South Park}}. Especially the &amp;quot;Dammit Kevin&amp;quot; mentioned in the title text could arise from this.&lt;br /&gt;
* [http://the321penguins.wikia.com/wiki/Kevin Kevin] from [https://en.wikipedia.org/wiki/3-2-1_Penguins! 3-2-1 Penguins!], who &amp;quot;will answer questions and save planets without even knowing he could.&amp;quot;&lt;br /&gt;
* Just a random name, as the only of the birds that actually have a personal name acts alone instead of following the other birds.&lt;br /&gt;
|}&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Caption above the panel:]&lt;br /&gt;
:Understanding Migration of Geese&lt;br /&gt;
&lt;br /&gt;
:[20 geese are shown flying in a typical migratory V-formation. As they are shown in silhouette it is not possible to determine if they are seen from above or from below.  They are flying toward the top of the image with the first goose close to the top in the middle of the image.  There is one head goose, and then there are 7 geese in the left arms and 9 geese in the right arm. Behind the left arm there are two stragglers that are not in line with the others, but closer to the middle than those above and not as close to each other as the rest but still flying in the same direction. Finally there is one goose at the bottom right corner flying at a 45 degree angle away from the other to the right. The first goose is flapping its wing, which is also the case with six other geese, no. 4 and 6 in the left and 3, 5 and 6 in the right arm as well as the middle of the two in the rear towards the middle. The rest are soaring with straight wings and all of these look the same except no.  7 in the right arm which has two tails, which both goes ahead of the wings, making it look like a plane with two engines. The head goose and 5 of the 9 geese in the right arm as well as the one bottom right are labelled with and arrow pointing to them from the label. The front goose has the label in front to the left, the other have it in front to the right, except the second last in the arm which has the label inside the V and one flying away which has the label right above it. The two behind and right of the left arm have one label behind them with two arrows from the label pointing at both geese. There is a thick curvy line in front of geese no. 3 to 5 in the left arm. In front of that line is a thinner broken line. In front of this is a label written with the same curvature. There are two areas surrounded by dotted lines. The first one is behind the last of the left arms geese, extending in the same direction for a distance of about two geese. It has a label above and left with and arrow pointing to it. The other area is in the middle of the V forming a loose triangular structure with a label inside.]&lt;br /&gt;
:Head goose:  Head goose &amp;lt;small&amp;gt;(4&amp;lt;sup&amp;gt;th&amp;lt;/sup&amp;gt; in line to the British throne)&amp;lt;/small&amp;gt;&lt;br /&gt;
:Right no. 1: Quarterback&lt;br /&gt;
:Right no. 3: Comptroller&lt;br /&gt;
:Right no. 5: Migration abort goose&lt;br /&gt;
:Right no. 7: Twin-engine model&lt;br /&gt;
:Right no. 8: CIA informant&lt;br /&gt;
:Bottom right corner: Kevin&lt;br /&gt;
:Behind center: Backups&lt;br /&gt;
:In front of left no. 3-5: Shock front&lt;br /&gt;
:Empty area behind left arm: Missing valence geese&lt;br /&gt;
:Empty area in center: Stealth cargo being escorted&lt;br /&gt;
&lt;br /&gt;
{{comic discussion}}&lt;br /&gt;
&lt;br /&gt;
[[Category:Animals]]&lt;br /&gt;
[[Category:American football]]&lt;/div&gt;</summary>
		<author><name>108.162.215.249</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=Talk:914:_Ice&amp;diff=124566</id>
		<title>Talk:914: Ice</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=Talk:914:_Ice&amp;diff=124566"/>
				<updated>2016-08-01T22:31:47Z</updated>
		
		<summary type="html">&lt;p&gt;108.162.215.249: Danish is the best&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;Well, at least he didn't lose his spleen. '''[[User:Davidy22|&amp;lt;u&amp;gt;{{Color|#707|David}}&amp;lt;font color=#070 size=3&amp;gt;y&amp;lt;/font&amp;gt;&amp;lt;/u&amp;gt;&amp;lt;font color=#508 size=4&amp;gt;²²&amp;lt;/font&amp;gt;]]'''[[User talk:Davidy22|&amp;lt;tt&amp;gt;[talk]&amp;lt;/tt&amp;gt;]] 01:30, 17 April 2013 (UTC)&lt;br /&gt;
&lt;br /&gt;
I understood the AAA-Club as reference to him shouting AAAAA. I think that is something pretty common in his situation.  --[[Special:Contributions/162.158.91.189|162.158.91.189]] 20:25, 26 February 2016 (UTC)&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
lol why would Danish need to harvest his ice anyway? And where the hell did she get a bathtub full of kidneys and an AAA membership? [[Special:Contributions/108.162.215.249|108.162.215.249]] 22:31, 1 August 2016 (UTC)&lt;/div&gt;</summary>
		<author><name>108.162.215.249</name></author>	</entry>

	<entry>
		<id>https://www.explainxkcd.com/wiki/index.php?title=1713:_50_ccs&amp;diff=124407</id>
		<title>1713: 50 ccs</title>
		<link rel="alternate" type="text/html" href="https://www.explainxkcd.com/wiki/index.php?title=1713:_50_ccs&amp;diff=124407"/>
				<updated>2016-07-29T21:47:49Z</updated>
		
		<summary type="html">&lt;p&gt;108.162.215.249: Remove racism&lt;/p&gt;
&lt;hr /&gt;
&lt;div&gt;{{comic&lt;br /&gt;
| number    = 1713&lt;br /&gt;
| date      = July 29, 2016&lt;br /&gt;
| title     = 50 ccs&lt;br /&gt;
| image     = 50_ccs.png&lt;br /&gt;
| titletext = There's been a raccoon accident at an accordion bacchanalia! Double doses!&lt;br /&gt;
}}&lt;br /&gt;
&lt;br /&gt;
==Explanation==&lt;br /&gt;
This comic presents a busy day in the clinic for doctor [[Ponytail]], who orders 50 ccs from a nurse (probably [[Megan]] who walks in front of her rather than [[Cueball]] walking away behind her), all the while everyone are hurrying along the hall. This could be a typical scenario in a busy hospital. However the pun is that the 50 ccs are not medicine but should be used to write &amp;quot;hiccup vaccine&amp;quot; 25 times...&lt;br /&gt;
&lt;br /&gt;
In medicine, &amp;quot;cc&amp;quot; usually means &amp;quot;{{w|cubic centimeter}}&amp;quot;, and is often called that by medical personnel. A cubic centimeter is equal to 1 ml (milliliter), so &amp;quot;50 ccs&amp;quot; usually means 50 ml of a certain medicine. In this case however, the doctor has not told the nurse to bring 50 ccs of any given medicine; she needs to write &amp;quot;hi'''cc'''up va'''cc'''ine&amp;quot; 25 times, with both words containing the letter combination &amp;quot;cc&amp;quot;, so she needs to write those combination 50 times. &lt;br /&gt;
&lt;br /&gt;
That is the joke, that the 50 ccs literally means the two-lettered 'cc' fifty times.&lt;br /&gt;
*50 cc would be&lt;br /&gt;
**cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc&lt;br /&gt;
** just enough 'cc's to spell ''hiccup vaccine'' 25 times. &lt;br /&gt;
&lt;br /&gt;
There's no conventional {{w|vaccine}} against {{w|hiccup}}s. However, performing tasks meant to distract one's self is a method to stop hiccups.  Therefore the act of writing &amp;quot;hiccup vaccine&amp;quot; 25 times would itself comprise a hiccup vaccine.&lt;br /&gt;
&lt;br /&gt;
The title text text refers to a fictional event with four words containing &amp;quot;cc&amp;quot; (ra'''cc'''oon, a'''cc'''ident, a'''cc'''ordion, ba'''cc'''hanalia), which means she needs to write &amp;quot;cc&amp;quot; 100 times. Referring to the 50 ccs from above, this would be a double dosage.&lt;br /&gt;
&lt;br /&gt;
Although the words of the sentence has been chosen based on their cc's the sentence is quite interesting in itself:&lt;br /&gt;
*An {{w|accordion}} is a box-shaped musical instrument with tangents like on a piano. The instrument is played by compressing or expanding the bellows. It has sometimes been accused of being a [http://i47.photobucket.com/albums/f193/ZenLunatic82/FarSide-Accordion.jpg hellish instrument]... It has not been used in xkcd before.&lt;br /&gt;
*The ''{{w|Bacchanalia}}'' were Roman festivals of {{w|Bacchus}} (Roman name for the equivalent Greek wine God Dionysus). The festivals were based on various ecstatic elements of the Greek {{w|Dionysia}}. &lt;br /&gt;
*The animal {{w|raccoon}}, has begun to appear in {{w|Raccoon#Urban_raccoons|urban areas}} which has given rises to increasing {{w|Raccoon#Conflicts|conflicts with humans}}. A dead raccoon had thus found its way into Cueball's car in [[1565: Back Seat]] and already back in [[1025: Tumblr]] Megan has a  raccoon sex dungeon in her attic!&lt;br /&gt;
&lt;br /&gt;
So here there is talk of a wine festival with music played on accordions that has had an accident involving raccoons. On top of the need for vaccine against the hiccups.&lt;br /&gt;
&lt;br /&gt;
==Transcript==&lt;br /&gt;
:[Ponytail in a doctor's coat, walks right while reading from a clipboard, passing Cueball walking the other way while she talks to Megan walking in front of her.]&lt;br /&gt;
:Ponytail: Nurse, bring me 50 ccs!&lt;br /&gt;
:Ponytail: I need to write &amp;quot;hiccup vaccine&amp;quot; 25 times!&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 Megan]]&lt;br /&gt;
[[Category:Animals]] &amp;lt;!-- Raccoons--&amp;gt;&lt;/div&gt;</summary>
		<author><name>108.162.215.249</name></author>	</entry>

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