explain xkcd - User contributions [en]

Talk:509: Induced Current

2016-12-14T20:15:45Z

Lionside:

I slightly disagree with the run-through of the "hopes to see it tested on mythbusters, and then scaled up to astronomical proportions" bit. Perhaps refine the first part by ending with something like "...in order to give them enough myths to be worth filming another series". The latter (a reference to the title-text, I assume) should then be dealt with in a separate para by explaining that Mythbusters ''tests'' myths experimentally, but that even the basic "use an LHC to get black holes" idea isn't going to be practically replicatable by them, let alone being able to replicate the possibility (or impossibility) of said black holes consuming the Earth. Unless TV budgets and resources are somewhat more capable than I imagine they are... [[Special:Contributions/178.107.63.150|178.107.63.150]] 21:41, 5 June 2013 (UTC)

I think the title text is also referring to the second half of the Mythbusters’ “replicate the circumstances, then duplicate the results” method. Basically, the Mythbusters would see what it ''would'' take to destroy the world (and, in the process, actually do so). Maybe they could get help from [http://qntm.org/destroy Sam Hughes] [[Special:Contributions/199.27.128.87|199.27.128.87]] 08:14, 20 July 2014 (UTC)

Two interesting historical examples are [http://en.wikipedia.org/wiki/Solar_storm_of_1859 the solar flare of 1859] in which telegraph wires had enough induced voltage to cause sparks on the telegraph poles, and [http://en.wikipedia.org/wiki/March_1989_geomagnetic_storm the geomagnetic storm of 1989], which caused the power grid in Quebec, Canada to fail. The latter demonstrates that in this modern era we are certainly not immune to such "outlandish" scenarios.[[Special:Contributions/108.162.219.160|108.162.219.160]] 01:16, 16 February 2015 (UTC)

Wait. If you tell Beret Guy that doesn't that make it more likely to happen since physics conforms to his simplistic understanding of it around him?
[[Special:Contributions/108.162.221.75|108.162.221.75]] 14:18, 13 August 2015 (UTC)

I think that the solar flares may be a reference to the BOFH's "SOLAR FLARES" excuse in the original series.
[[Special:Contributions/108.162.242.124|108.162.242.124]] 10:53, 3 October 2016 (UTC)

It didn't work. The Mythbusters are gone :( [[User:Lionside|Lionside]] ([[User talk:Lionside|talk]]) 20:15, 14 December 2016 (UTC)

1762: Moving Boxes

2016-12-01T00:30:25Z

Lionside: /* Explanation of boxes */ added citation needed

{{comic
| number = 1762
| date = November 21, 2016
| title = Moving Boxes
| image = moving_boxes.png
| 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.
}}

==Explanation==

[[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, "sand" and "silt" and "dark matter" are all generally considered as "particles"; "membranes", "edges", and "shawls" are all kinds of "manifolds"; "hooves" are part of "bison"; "fog" contains "water"; and "triangles" consist of three "edges". 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.

According to the title text, when Randall remembers that he is calling movers, he frantically scribbles "Normal House Stuff" 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.

===Explanation of boxes===
{| class="wikitable" width="100%"
!Label
!Explanation
|-
!Box 1
|-
|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 "a box of grid squares".
|-
|Bison||{{w|Bison}}, sometimes mistakenly called buffalo, are large animals that would probably not fit in the box{{Citation needed}}.
|-
|Checkerboards||The tabletop gaming boards on which one plays {{w|English draughts|Checkers}}. It is also the name of the corresponding pattern, and thus can be interpreted as an abstract term like many other "objects" in this comic.
|-
|Fog||{{w|Fog}} is essentially low-lying clouds which, being gaseous, are hard to box using only cardboard.
|-
!Box 2
|-
|Beacons||Beacons are devices designed to draw attention to themselves, for various reasons. From the generic term "beacon" this could mean anything from electronic GPS locator beacons to miniature replicas of naval lighthouses.
|-
|Elves||Elves are a fictional race (or rather, many, many fictional races) of human-like magical creatures.
|-
|Sand||Sand grains are 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.
|-
!Box 3 - Blood
|-
|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}}.
|-
!Box 4
|-
|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 read that any house you're moving into has its own plumbing. Unless, of course, they insist on drinking bottled water (which some people do).
|-
|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.
|-
!Box 5 - {{w|Charadriiformes|Charadriiformes}}
|-
|Shorebirds|| Also known as {{w|Wader|Waders}},these are an order of birds that wade in littoral waters.
|-
!Box 6 - Vector Space?
|-
|Oil|| This could mean anything from cooking oil to petroleum; either way, having a third of a box full of oil bottles is unusual, but for different reasons. Of course, perhaps it is an entire box.
|-
|Vectors||{{w|Vector}}s are properties with magnitude and direction, such as velocity, momentum, acceleration, etc., but can depend on the context. In any situation, they are not physical objects, so they cannot be put in boxes. Alternatively "vector" could mean a carrier of a disease, such as ticks or mosquitos, but while more possible to box they would still not be practical to keep with common household goods and the intent of moving them as such would be dubious at best.
|-
|Silt|| Material between sand and clay size-wise. A sediment. See sand and water above for why this is unusual. Randall has a special place in his heart for rock particles of various sizes; see [https://what-if.xkcd.com/83/ What If #83].
|-
!Box 7
|-
|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.
|-
|Shards||These are 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.
|-
!Box 8
|-
|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.
|-
|Glucose||{{w|Glucose}} is possibly best-known as the sugar plants produce for energy, but can be manufactured.
|-
|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... It can also refer to juveniles of some mammals, such as foxes or rabbits (it is not very likely that such animals would be packed in a box - though compare [[325: A-Minus-Minus]]). Alternatively, this may be a compound word "Glucose Kits", diabetic assay tools to help the patient regulate their blood sugar.
|-
!Box 9
|-
|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.
|-
|Particles||As almost all matter is composed of {{w|particles}}, it is hard to find exceptions. Thus, this is very vague.
|-
|Knots||{{w|Knot}}s are things tied in ropes; they can hold things or just be there. This would be hard to put in a box without rope{{Citation needed}}. Could also refer to knots in a piece of {{w|wood}}, which are hard to put in the box without the rest of the wood. Knots could also refer to the {{w|Knot_(unit)|unit of speed}}, usually used in meteorology, and in maritime and air navigation which would be impossible to box as it is not a physical object.
|-
!Box 10 - Palette
|-
|Graphite||{{w|Graphite}} is a crystalline form of carbon, where the atoms are arranged in sheets. It is found in some household products (pencils and lubricant oil), though in either case the name of the end product would be a more likely box label. Graphite is also a color.
|-
|Taupe|| {{w|Taupe}} is a dark tan color in between brown and gray, again, not an object. May be a reference to Gliese 581f (a.k.a. Taupe Mars) from [[1253|xkcd #1253]].
|-
!Box 11 - Gaussian surface?
|-
|Field Lines||This could refer to {{w|field line}}s as used to depict electromagnetic 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.
|-
!Box 12
|-
|Traps||May be a reference to 'My house is full of traps' from [https://what-if.xkcd.com/34// What-If #34]
|-
!Box 13
|-
|Edges||{{w|Edge_(geometry)|Edge}} is a line segment joining two vertices. Even though physical objects do have edges, you cannot store edges themselves as they are just mathematical constructs.
|-
|Tribes||{{w|Tribe}} is a social group of people, tribes existed before states were formed. It is impossible to store a group of people in the box{{Citation needed}}.
|-
|Dough||{{w|Dough}} is a thick, malleable, sometimes elastic, paste made out of any grains, leguminous or chestnut crops. It is used in the process of cooking, but it doesn't make sense to pack it while moving.
|-
!Box 14
|-
|Dark Matter||{{w|Dark matter}} is what scientists believe to be a big part of the mass of galaxies, but we have never observed it, so it is not possible to pack it {{Citation needed}}. Alternatively, if all dark matter was permanently packed in boxes like this it would explain why it has never been observed. According to the Copenhagen interpretation of the uncertainty principle, dark matter may both the in the box and somewhere else in the universe until such a time that somebody open the box.
|-
!Box 15
|-
|Manifolds||In topology, {{w|Manifold|Manifolds}} are spaces with certain "nice" properties (i.e. they are locally Euclidean). This is yet another mathematical construct which is impossible to pack into a box. Manifold could also refer to a pipe or chamber branching into several openings, for example an engine exhaust manifold. While physical, it's unlikely that multiple are put in a box for moving.
|-
!Box 16
|-
|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.
|-
|Peat|| {{w|Peat}} is an accumulation of partially decayed vegetation that forms in wetland bogs, moors, mires, and swamps.
|-
|Crowns|| These may be royal crowns, or may be the coin worth five shillings in UK pre-decimal currency.
|-
!Box 17
|-
|Scrolls||A {{w|scroll}} is a roll of papyrus, paper, or parchment that contains writing. It is a common item in fantasy games (as elves and traps).
|}

==Transcript==
:[A bunch of cardboard boxes stacked up, each labeled]
:{| class="wikitable"
| style="visibility:hidden" |
| colspan="2" height="80px" width="80px" |
Grids 
Bison 
Checkerboards 
Fog
| colspan="2" width="80px" height="80px"|
Beacons 
Elves 
Sand
| colspan="2" width="80px" height="80px" |
Hemoglobin
| colspan="2" width="80px" height="80px" |
Water 
Hooves
| style="visibility:hidden" |
|-|
| style="visibility:hidden" |
| colspan="2" width="80px" height="80px" |
Shorebirds
| colspan="2" width="80px" height="80px" |
Oil 
Vectors 
Silt
| colspan="2" width="80px" height="80px" |
Membranes 
Shards
| colspan="2" width="80px" height="80px" |
Shawls 
Glucose 
Kits
| style="visibility:hidden" |
|-|
| style="visibility:hidden" |
| colspan="2" width="80px" height="80px" |
Hydrants 
Particles 
Knots
| colspan="2" width="80px" height="80px" |
Graphite 
Taupe
| colspan="2" width="80px" height="80px" |
Field Lines
| colspan="2" width="80px" height="80px" |
Traps
| style="visibility:hidden" |
|-|
| colspan="2" width="80px" height="80px" |
Edges 
Tribes 
Dough
| colspan="2" width="80px" height="80px" |
Dark Matter
| colspan="2" width="80px" height="80px" |
Manifolds
| colspan="2" width="80px" height="80px" |
Triangles 
Peat 
Crowns
| colspan="2" width="80px" height="80px" |
Scrolls
|}

:[Caption: I always forget to label my moving boxes until they're sealed up and I've forgotten what's in them.]
{{comic discussion}}

[[Category:Comics with color]]

1763: Catcalling

2016-12-01T00:26:34Z

Lionside: /* Explanation */

{{comic
| number = 1763
| date = November 23, 2016
| title = Catcalling
| image = catcalling.png
| titletext = Effect strength => [unstoppable] | Effect range => [2 miles] | Effect duration => [1 year]
}}

==Explanation==
"{{w|Street harassment|Catcalling}}" refers to the act of whistling or shouting to express sexual interest in a person, and often constitutes harassment. Annoyed by this practice, [[Megan]] alters the Universe Control Console to create a setting in which catcalling actually attracts cats (as the name implies), thus resulting in the catcaller being harassed by the overwhelming feline presence, instead of the other way around, likely in an attempt to discourage the act.

The "Universe Control Console" was introduced in [[1620: Christmas Settings]] as the "Universe Control Panel", where it was used to control aspects of reality related to Christmas. Based on the name, it is presumed all aspects of reality could be altered using this fictitious device. The pointer arrow and menu options shown above Megan appear to depict aspects of the user interface that Megan is seeing.

The Console appears to have been modified/upgraded since its last appearance and features fewer controls while gaining a joystick in this incarnation. It also appears that Megan has learned to operate the console better since first encountering it. ([[Ponytail]], who first demonstrated the console to Megan, could be the offscreen voice in this comic.)

Furthermore, the title text suggests that catcalling now attracts ''all'' cats within two miles for an entire year. The prospect of being piled in cats for a year would discourage people from catcalling by a large amount.{{Citation needed}} [[1156: Conditioning]] also persuades people to change behavior related to wildlife.

The redefining of terms related to sexual harassment as more innocent things has also been discussed in [[1178: Pickup Artists]].

Also, the cursor on the console is left-handed for some reason.

==Transcript==
:Offscreen: ''Hey! Are you messing with the Universe Control Console!?''

:Megan: [standing at a control panel with a small lever and what appears to be a display] It's cool. Just gotta fix one thing.

:[Megan still at the control panel; now a mouse pointer appears]

:[Megan still at the control panel; "Catcalling" appears written at the top of the panel above a dropdown menu that says "Harasses women"; the pointer is hovering over the arrow]

:[Megan still at the control panel; The dropdown menu is expanded to show two elements: "Harasses women" and "Attracts cats". The pointer is hovering over "Attracts cats", which is highlighted]

{{comic discussion}}

[[Category:Comics featuring Megan]]

1766: Apple Spectrum

2016-12-01T00:19:31Z

Lionside: Tried to explain why the alt text is funny. I did my best. I laughed so hard.

{{comic
| number = 1766
| date = November 30, 2016
| title = Apple Spectrum
| image = apple_spectrum.png
| titletext = If I were trapped on a desert island, and could have an unlimited supply of any one type of apple, I'd be like, "How did this situation happen?"
}}

==Explanation==
{{incomplete|Explain Granny Smith}}
The comic shows a {{w|spectrum}} of different types of apples, with {{w|Red Delicious}} towards the bad end of the spectrum, and {{w|Honeycrisp}} towards the good end of the spectrum. Although most spectrums are only one-dimensional, {{w|Granny Smith}} is on some side branch, implying that the taste is so different from the other two that it deserves its own category. (Perhaps this refers to the fact that the Granny Smith is primarily a cooking apple while the named apples on the main spectrum are eating apples. Additionally, Granny Smith apples have a tart, or sour, flavor with a subtle sweetness.) The rest of the apple types fall somewhere in between. [[Randall]] has previously shown his disdain for Red Delicious apples in [[388: Fuck Grapefruit]] and footnote 1 in [https://books.google.com/books?id=tgZIBAAAQBAJ&lpg=PP1&pg=PA97#v=onepage&q&f=false this what if].

In the title text Randall observes a common type of hypothetical question. If he was on a desert island with an unlimited supply of any one type of apple, what would the type be? However, Randall dodges the question by questioning the logic of the system, and asking why he was in this particular situation, as most people who are stuck on a desert island wouldn't have an unlimited supply of apple. The question is designed to figure out what a person likes the best, however it completely backfired, as the person, instead of answering, questioned the plausibility of the situation. It's funny because this response subverts the normal expected type of response when a person is posed with such a hypothetical situation.

==Transcript==
[A flowchart, showing types of apples. Each apple is in a bubble]
<div style="text-align: center;">
Bad <-- Red Delicious -- Regular apples -- Honeycrisp --> Good
 |
 |
 Granny Smith
 |
 V
 Doing their own thing
</div>

{{comic discussion}}