explain xkcd - User contributions [en]

993: Brand Identity

2018-08-11T00:44:47Z

108.162.241.82:

{{comic
| number = 993
| date = December 21, 2011
| title = Brand Identity
| image = brand_identity.png
| titletext = Legally-mandated information would be printed on the back or discreetly along the bottom. In small letters under the nutrition information it would say 'Like our products? Visit our website!' There would be no URL.
}}

==Explanation==
This comic presents [[Randall]]'s idea for a line of food products all with clear black font on a white background. The products with black block lettering and white background stand out from the other items in this comic. The irony is that even though the branding isn't terribly creative, the ''lack'' of complexity is what causes the products to stand out. These product packaging styles resemble {{w|no-frills}} products and {{w|generic brands}}. For example, in Canada, the "{{w|No Name (brand)|No Name}}" generic brand of low-cost products sold by {{w|Loblaw Companies Limited|Loblaws}} general features a plain yellow label with the description of the product in bold black text, and occasionally an image of the product. The brand name is minimalized as are other legally-required elements (e.g. the weight of the product). Another of Loblaws' generic brands, {{w|President's Choice}} (PC) currently has a plain white background with black bold text for the labels on most of its products (usually with an image of the product as well as the brand name), although more recently, text in accent colours has been introduced.

The style of packaging might be a reference to ''{{w|The Prisoner}}'' TV series from the '60s, a dystopia set in a village (actually, "the village") locked out from the outside world. The shops here only sell "village food". [http://www.wemadethis.co.uk/blog/wp-content/uploads/2015/02/Village-foods.jpg See this photo] for an example.
It might also be a reference to Portal’s bean cans.

In the title text, the lack of a listed URL relates to the lack of branding on the package. It is possible that omitting the URL the consumer's curiosity will be aroused, and they will spend time on the internet hunting for the actual site.

===List of all products in the shelves===
[[File:993_numbering.png]]

*[1] Rainbow
*[2] Ruffles
*[3] [unreadable]
*[4] Potato Chips [new brand]
*[5] [unreadable]
*[6] cheese crackers [Flavor 1]
*[7] cheese crackers [Flavor 2]
*[8] - [12] [unreadable]
*[13] Beets
*[14] - [16] [unreadable]
*[17] tissues [new brand]
*[18] cervical caps [what product is this? see comments]
*[19] [unreadable]
*[20] blue stripe shells
*[21] - [24] [unreadable]
*[25] - [26] [unreadable]
*[27] crackers [new brand]
*[28] - [29] [unreadable]
*[30] matches [new brand]
*[31] - [32] [unreadable]
*[33] peanuts [new brand]
*[34] hot sauce [probably not the new brand, see comments]
*[35] - [40] [unreadable]
*[41] sugar [probably not the new brand, see comments]
*[42] - [45] [unreadable]
*[46] milk [new brand]
*[47] - [48] [unreadable]
*[49] pasta [new brand]
*[50] caccalion [there is no pasta named like this says the {{w|List of pasta}}]
*[51] free
*[52] [unreadable]
*[53] coffee
*[54] [unreadable]
*[55] coffee [new brand]
*[56] - [61] [unreadable]
*[62] white beans
*[63] - [66] [unreadable]
*[67] sanfra beans [there are no beans named like this says the {{w|Bean#Types}}]
*[68] pinto beans
*[69] bean
*[70] pinto beans
*[71] black beans [new brand]
*[72] [unreadable]
*[73] do beans [there are no beans named like this says the {{w|Bean#Types}}]
*[74] black beans
*[75] [unreadable]
*[76] lima beans
*[77] lima beans [new brand]
*[78] fort cotbean [partially unreadable, there are no beans named like this says the {{w|Bean#Types}}]
*[79] three [unreadable] can
*[80] [unreadable]
*[81] pine + giant bean
*[82] beans with [unreadable]
*[83] refrie[d beans; unfinished due to bowing of can]
*[84]-[85] [unreadable]
*[86] mayonnaise
*[87] roo's simple mayo
*[88] simp[le] mayo [unfinished word due to bowing of can]
*[89] mayo [new brand]
*[90] [unreadable]
*[91] red meat sauce
*[92] [unreadable]
*[93] oil
*[94] [unreadable]
*[95] oil
*[96] ketchup [new brand]
*[97] - [98] [unreadable]
*[99] maple syrup
*[100] - [101] [unreadable]
*[102] eye
*[103] tea
*[104] tea
*[105] - [106] [unreadable]
*[107] tea
*[108] country loaf
*[109] bread [new brand]
*[110] white bread

==Transcript==
:[The incredibly varied shelf of a supermarket aisle. There are many different types of products on this shelf. Each type has numerous different brands, all surrounding a very plain brand that has, as its only label, the type of product. A plain bag, labeled in plain black letters, says "Potato Chips" and is surrounded by all the other various brands of potato chips. The same exists for tissues, crackers, matches, peanuts, hot sauce, sugar, milk, pasta, coffee, black beans, lima beans, mayo, ketchup, tea, and bread. There is a stark contrast between the incredibly noisy and complex labeling of every other brand and this simple one.]

:[Caption below:]
:If I ever sold a line of supermarket goods,
:this is how I'd build a brand identity overnight.

{{comic discussion}}
[[Category:Comics with color]]
[[Category:Food]]

1972: Autogyros

2018-03-26T13:58:44Z

108.162.241.82: /* Transcript */

{{comic
| number = 1972
| date = March 26, 2018
| title = Autogyros
| image = autogyros.png
| titletext = I understand modern autogyros are much more stable, so I've probably angered the autogyro people by impugning their safety. Once they finish building the autogyros they've been working on in their garages for 10 years, they'll come after me.
}}

==Explanation==
{{incomplete|Created by an ANGRY AUTOGYRO MAKER - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

==Transcript==
{{incomplete transcript|Do NOT delete this tag too soon.}}

Image description: A picture of [[Megan]] wearing aviator goggles, sitting in an autogyro. The autogyro is surrounded by sentence fragments, explaining characteristics of it.

Looks like a helicopter, but is nothing like a helicopter.

Big blade on top is not powered and spins freely.

Can often be flown without a licence.

Cheap.

Needs a runway to take off, but not a long one.

Can land vertically.

Cannot hover.

Never stalls.

Extremely safe, unless you do the one thing you instinctively do to escape a stall in a normal airplane, in which case it will crash immediately.

{{comic discussion}}

1972: Autogyros

2018-03-26T13:57:05Z

108.162.241.82:

1841: Who?

2017-05-24T14:35:44Z

108.162.241.82: /* Explanation */

{{comic
| number = 1841
| date = May 24, 2017
| title = Who?
| image = who.png
| titletext = Gonna feel even dumber when I realize that all this time he's been talking into a bluetooth thingy and we're not actually friends.
}}

==Explanation==
{{incomplete|Created by a BOT - Please change this comment when editing this page. Do NOT delete this tag too soon.}}

The title text is an allusion to [https://xkcd.com/476/], where Randal doesn't realize who the other person is talking to.

==Transcript==

Hairy: ... I'm getting a ride with Katie to Adam's wedding. Hoping to see Brian on the way!

Cueball: Oh, that's cool!

Cueball: ... I can't keep living this lie, so I'm just gonna come out and admit it: I have no idea who any of the people you keep mentioning are.

Title text: Gonna feel even dumber when I realize that all this time he's been talking into a bluetooth thingy and we're not actually friends.
{{comic discussion}}

Talk:505: A Bunch of Rocks

2017-05-18T20:49:35Z

108.162.241.82:

;Weird thing with lines in it
Could it have something to do with time dilatation? something like "real" time vs "observed" time (my first comment, hope I did it right) [[Special:Contributions/108.162.241.82|108.162.241.82]] 20:49, 18 May 2017 (UTC)108.162.241.82

probably has something to do with relativity -- two objects moving, arriving at different points at the same time, or maybe a diagram of spacetime. [[Special:Contributions/66.202.132.250|66.202.132.250]] 16:44, 10 June 2013 (UTC)

It's a [https://en.wikipedia.org/wiki/Feynman_diagram Feynman Diagram] [[Special:Contributions/206.174.12.203|206.174.12.203]] 19:24, 10 June 2013 (UTC) Toby Ovod-Everett

:I did add the incomplete tag because this comic and also the explain is still really complex. More important: People without a proper physics background never will understand. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 21:01, 10 June 2013 (UTC)

There is a short story called "SOLE SOLUTION" by Eric Frank Russell which is quite similar to the one in the story. Just in case that matters.{{unsigned|Maob}}

Re Rule 34 - the point is that this comic _is_ cellular automaton porn (as are the YouTube videos of Minecraft calculators and the like). Rule 34 works, bitches! {{unsigned ip|141.101.98.241}}

Not sure what's incomplete about the explain. [[User:MrGameZone|0100011101100001011011010110010101011010011011110110111001100101]] ([[User talk:MrGameZone|talk page]]) 22:56, 11 February 2014 (UTC)

Yo ''calculus'' is the latin word for pebble! I learned this and had to come straight to this page! ahhh connections! [[Special:Contributions/173.245.50.88|173.245.50.88]] Sawyer Biddle

As it turns out, Rule 110 seems to be a ''really bad'' way to simulate a universe- you would be much better off using a {{w|Tag_system|Cyclic tag system}}, since Rule 110 takes dozens of generations and potentially hundreds of cells to simulate one step in such a system, or a more sophisticated cellular automaton, such as {{w|Wireworld.}} --[[User:Someone Else 37|Someone Else 37]] ([[User talk:Someone Else 37|talk]]) 05:12, 9 March 2014 (UTC)

To whoever objected to panel number references, does what I did with first words fix that? {{unsigned ip|199.27.128.99}}

Well, that's a pretty unfair comparison in the last panel, the protag is immortal after all, if I'm immortal I might do the same thing, but hey we got a much shorter life to live {{unsigned ip|103.22.201.168}}

The diagram to the right of the Epitaph of Stevinus looks like a system of coupled pendula, often used in math physics courses to illustrate Lagrangian mechanics. Also may relate to elasticity theory. See for example here: http://demonstrations.wolfram.com/ThreePendulumsConnectedByTwoSprings. [[Special:Contributions/108.162.221.96|108.162.221.96]] 03:23, 12 November 2014 (UTC)
:If this is true (which seems like the most probable solution so far) then what do the symbols inside the boxes represent?{{unsigned ip|108.162.216.209}}
:: Spring constants, masses, lengths, etc [[Special:Contributions/108.162.221.220|108.162.221.220]] 18:11, 12 November 2014 (UTC)
::: The symbols on the top seem to be K and the bottom W. W is often used for angular momentum and K for potential energy. If you are not exactly right you are very close to being so.[[Special:Contributions/108.162.216.209|108.162.216.209]] 13:45, 1 December 2014 (UTC)
:The "diagram to the right of the Epitaph of Stevinus", also described as "A weird diagram with lines in it", or "partitioning of phase space into fundamental cells", or " system of coupled pendula, often used in math physics courses to illustrate Lagrangian mechanics", can be described more literally: ''There is are two horizontal rulers with divisions 13 pixels apart and 17 pixels apart, respectively; and diagonal lines showing the correspondence between the first four markings of the upper ruler with those on the lower. The intervals seem to be labeled.'' Returning to speculation, I think this suggests an illustration of '''Length contraction (Lorentz coordinate transformation) in Special Relativity'''. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 20:22, 28 November 2014 (UTC)
:: That seems highly unlikely due to the top labels on this graph. In your explanation they can’t represent anything relevant. Also if this diagram is used to represent spatial contraction, it does not do a good job of it. [[Special:Contributions/108.162.216.209|108.162.216.209]] 13:45, 1 December 2014 (UTC)
::: I imagined the labels were, top row: O', x', (2x)'; bottom row: O, x, 2x, Δv; or perhaps top row: Δx₁', Δx₂', Δx₃'; bottom row Δx₁, Δx₂, Δx₃, 0.7c. I don't think Randall put enough thought into those tiny squiggles for us to be able to use pixel-counting as a hint to which labels interpretation is more likely… but what of it? We can make up labels that fit any interpretation. I did say "Length contraction (Lorentz...)" was just ''speculation''. I do like the "four pendulums coupled by springs" idea, though the horizontals look too ruler-like to me. It might be better just to say "two horizontal ruled lines linked by some diagonals" ! [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 17:00, 1 December 2014 (UTC)
:::: You are totally right, this one may always be pure speculation. Though I am pretty sure the bottom points are labeled w, the top is by no means clear. [[Special:Contributions/108.162.216.209|108.162.216.209]] 20:46, 1 December 2014 (UTC)
::::: I propose that we change it again, from (current text: "A depiction of length contraction, with two lines of the same length locally but different lengths as one is viewed in motion") to something like ''"A depiction of length contraction with two rulers in relative motion, or of several pendulums coupled by springs"''. Or mention the pendula idea first, I don't want to decide. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 02:20, 2 December 2014 (UTC)
:::::: Though it's in panel before that one, there's the text "and then some" referencing going beyond what we currently know in a field - could it ''possibly'' be that this is supposed to represent something we haven't derived yet? -- [[User:Brettpeirce|Brettpeirce]] ([[User talk:Brettpeirce|talk]]) 10:44, 2 December 2014 (UTC)
:Also, I'd like to point out that all three diagrams unify the theme of "working out the kinks in quantum mechanics and relativity": The first illustrates a region of the bell curve where a particle might occasionally fall if it is about to exhibit quantum tunneling; the second relates to perpetual motion, thus hinting at general questions like "does quantum mechanics or relativity allow us to violate the laws of thermodynamics in any way?", and the third is from special relativity. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 20:22, 28 November 2014 (UTC)
:: Having studied (and knowing the fundamentals about what profile is needed to create a device that performs quantum tunneling) I have never seen this graph as a representation of this, and frankly it makes no sense. If this diagram was an energy band the hole or electron would have no need to tunnel to go up or down the energy band as it is a gradual slope. If a device had a profile like this, it would not result in a significant number of tunneling events, especially at the positions that are marked on the diagram. For this to occur there would need to be a peak between the two points, and the points would need to be at similar heights (energy levels). [[Special:Contributions/108.162.216.209|108.162.216.209]] 13:06, 1 December 2014 (UTC)
::: Yes, you're right: all we know is that it's a bell curve (normal distribution), and mentioning "tunneling" might make the reader think we were saying it is a potential function. I was reading a bit much into it. Why are there two vertical dotted lines at roughly +σ and +2σ? I thought they indicated a "range" as if the graph were illustrating some discussion of things that fall within that range. I also incorrectly remembered what the Epitaph of Stevinus was about, so thanks for the corrections :-) [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 16:57, 1 December 2014 (UTC)
:::: I think we could reasonably add that the function represents a probability distribution of a partial, therefore tying in the quantum aspects. with a minor explanation of the probibility of 1 and 2 sigma. [[Special:Contributions/108.162.216.209|108.162.216.209]] 20:46, 1 December 2014 (UTC)
::::: I do think it was okay without the extra text referencing quantum mechanics. I was just trying to find a way to relate the image to the words… but there are so many ways to relate the normal distribution to anything in science :-) [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 02:20, 2 December 2014 (UTC)

The bigger picture that's missing on this explains it that this comic seems to suggest that Cueball is God, as in being stuck in Eternity who happened to build a simulated universe, which we all live in. Seeing how he addresses the reader "So if you see a mote of dust vanish from your vision in a little flash or something I'm sorry. I must have misplaced a rock sometime in the last few billions and billions of millennia." {{[[Special:Contributions/141.101.105.238|141.101.105.238]] 10:25, 12 November 2014 (UTC)}}
: I understand that English might not be your first language, but please clarify. The explanation covers Cueball being godlike. How can we add something that is already covered? Do you require further detail? Are you disagreeing with this assessment? Are you considering this observation irrelevant as your summary for your first comment "added not about Cueball being God" seems to imply? If so why?[[Special:Contributions/108.162.216.209|108.162.216.209]] 17:57, 12 November 2014 (UTC)
:: nm. I blatantly overlooked the exisiting sentence in the explanation. i blame the layout of this page. inline text that spans the whole available screen width is not pleasant to read on large displays ;) ...as for my English... the confusion stems from my bad keyboard/typing. it was meant to read "added notE about Cueball" for instance, or "as in A being stuck". [[Special:Contributions/141.101.105.233|141.101.105.233]] 08:15, 13 November 2014 (UTC)
:::you could shrink your window and display narrower lines of text(?) -- I guess it comes down to preference for masochism(?)... idunno. I think one of the most confusing parts of your question (and which may have contributed most to the ESL idea) is "missing on this explains it that...". Also, "as in being stuck" makes more sense than "as in a being stuck", though it seems you're suggesting otherwise (?) and I don't see any text mentioning added not(E) about Cueball) -- oh wait; is this a troll? -- [[User:Brettpeirce|Brettpeirce]] ([[User talk:Brettpeirce|talk]]) 15:14, 14 November 2014 (UTC)

Who or what is Nugui and why is it relivent.[[Special:Contributions/108.162.216.209|108.162.216.209]] 17:57, 12 November 2014 (UTC)

is randall not assuming that his universe (and by implication ours) is finite? if not, one iteration of the machine would still take infinite time. --[[Special:Contributions/141.101.98.201|141.101.98.201]] 12:42, 26 November 2014 (UTC)
: I think it's good enough to assume that the universe is finite, but really really huge. Hypothesizing that adding one particle to the model requires twice as many cells in the cellular automaton, that means that Cueball's cellular automata rows could be about 2^(10^80) cells long, allowing simulation of a physics system containing 10^80 particles. Of course, each planck-time would require 2^(10^80) steps of simulation in the CA. If 10^80 isn't big enough for you, then just make it 10^1000 or Graham's number, or anything finite. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 16:57, 1 December 2014 (UTC)
:: Don't forget that Rule 110 has 000 -> 0. Cueball can just add columns on either side as his universe expands, consequently taking more and more time to compute steps as the number of columns increases. {{unsigned ip|108.162.216.42}}

Did anyone notice that the binary numbers pointing to the particle are both 42? [[Special:Contributions/108.162.241.16|108.162.241.16]] 19:26, 27 November 2014 (UTC)
:I did now. :) But, somewhere, he left out the towel. [[User:Jarod997|Jarod997]] ([[User talk:Jarod997|talk]]) 14:33, 1 December 2014 (UTC)

Just as a curiosity -- there is a somewhat similar concept in "Permutation City", a book by Greg Egan. {{unsigned ip|141.101.88.211}}
:And dust is probably a reference to Dust Theory: http://gregegan.customer.netspace.net.au/PERMUTATION/FAQ/FAQ.html {{unsigned ip|141.101.98.187}}

I don't understand how it's possible to simulate a universe this way. Assuming that quantum mechanics is correct, and some forms of particle decay are truly random, wouldn't it be impossible to simulate this with a purely deterministic system? [[User:KingSupernova|KingSupernova]] ([[User talk:KingSupernova|talk]]) 15:30, 1 December 2015 (UTC)
: The universe Cueball is simulating would have to conform to [[wikipedia:Digital physics|digital physics]]. I can't speak about the fine points of quantum mechanics, but observably random events in a simulated universe could be the result of a pseudorandom number generator with a very large state. [[User:Srimech|Srimech]] ([[User talk:Srimech|talk]]) 23:37, 16 February 2016 (UTC)

This is definitely my favorite comic. I just really love it - I wish there was a book or something about it that was more in depth. --[[Special:Contributions/108.162.219.5|108.162.219.5]] 14:32, 5 June 2016 (UTC)
:Yeah. Wow. Just... Wow. I would be so interested if this were somehow true. I just wish he could occasionally figure out how to mess with our retinas by spontaneously flipping bits in order to make us see a representation of him. That would be awesome, right? If I can make my own universe, well... I would do that. Also, I love this guy, real or not. [[User:Jacky720|That's right, Jacky720 just signed this]] ([[User talk:Jacky720|talk]] | [[Special:Contributions/Jacky720|contribs]]) 16:10, 5 January 2017 (UTC)

Talk:505: A Bunch of Rocks

2017-05-18T20:44:03Z

108.162.241.82:

;Weird thing with lines in it
Could it have something to do with time dilatation? something like "real" time vs "observed" time (my first comment, hope I did it right)

probably has something to do with relativity -- two objects moving, arriving at different points at the same time, or maybe a diagram of spacetime. [[Special:Contributions/66.202.132.250|66.202.132.250]] 16:44, 10 June 2013 (UTC)

It's a [https://en.wikipedia.org/wiki/Feynman_diagram Feynman Diagram] [[Special:Contributions/206.174.12.203|206.174.12.203]] 19:24, 10 June 2013 (UTC) Toby Ovod-Everett

:I did add the incomplete tag because this comic and also the explain is still really complex. More important: People without a proper physics background never will understand. --[[User:Dgbrt|Dgbrt]] ([[User talk:Dgbrt|talk]]) 21:01, 10 June 2013 (UTC)

There is a short story called "SOLE SOLUTION" by Eric Frank Russell which is quite similar to the one in the story. Just in case that matters.{{unsigned|Maob}}

Re Rule 34 - the point is that this comic _is_ cellular automaton porn (as are the YouTube videos of Minecraft calculators and the like). Rule 34 works, bitches! {{unsigned ip|141.101.98.241}}

Not sure what's incomplete about the explain. [[User:MrGameZone|0100011101100001011011010110010101011010011011110110111001100101]] ([[User talk:MrGameZone|talk page]]) 22:56, 11 February 2014 (UTC)

Yo ''calculus'' is the latin word for pebble! I learned this and had to come straight to this page! ahhh connections! [[Special:Contributions/173.245.50.88|173.245.50.88]] Sawyer Biddle

As it turns out, Rule 110 seems to be a ''really bad'' way to simulate a universe- you would be much better off using a {{w|Tag_system|Cyclic tag system}}, since Rule 110 takes dozens of generations and potentially hundreds of cells to simulate one step in such a system, or a more sophisticated cellular automaton, such as {{w|Wireworld.}} --[[User:Someone Else 37|Someone Else 37]] ([[User talk:Someone Else 37|talk]]) 05:12, 9 March 2014 (UTC)

To whoever objected to panel number references, does what I did with first words fix that? {{unsigned ip|199.27.128.99}}

Well, that's a pretty unfair comparison in the last panel, the protag is immortal after all, if I'm immortal I might do the same thing, but hey we got a much shorter life to live {{unsigned ip|103.22.201.168}}

The diagram to the right of the Epitaph of Stevinus looks like a system of coupled pendula, often used in math physics courses to illustrate Lagrangian mechanics. Also may relate to elasticity theory. See for example here: http://demonstrations.wolfram.com/ThreePendulumsConnectedByTwoSprings. [[Special:Contributions/108.162.221.96|108.162.221.96]] 03:23, 12 November 2014 (UTC)
:If this is true (which seems like the most probable solution so far) then what do the symbols inside the boxes represent?{{unsigned ip|108.162.216.209}}
:: Spring constants, masses, lengths, etc [[Special:Contributions/108.162.221.220|108.162.221.220]] 18:11, 12 November 2014 (UTC)
::: The symbols on the top seem to be K and the bottom W. W is often used for angular momentum and K for potential energy. If you are not exactly right you are very close to being so.[[Special:Contributions/108.162.216.209|108.162.216.209]] 13:45, 1 December 2014 (UTC)
:The "diagram to the right of the Epitaph of Stevinus", also described as "A weird diagram with lines in it", or "partitioning of phase space into fundamental cells", or " system of coupled pendula, often used in math physics courses to illustrate Lagrangian mechanics", can be described more literally: ''There is are two horizontal rulers with divisions 13 pixels apart and 17 pixels apart, respectively; and diagonal lines showing the correspondence between the first four markings of the upper ruler with those on the lower. The intervals seem to be labeled.'' Returning to speculation, I think this suggests an illustration of '''Length contraction (Lorentz coordinate transformation) in Special Relativity'''. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 20:22, 28 November 2014 (UTC)
:: That seems highly unlikely due to the top labels on this graph. In your explanation they can’t represent anything relevant. Also if this diagram is used to represent spatial contraction, it does not do a good job of it. [[Special:Contributions/108.162.216.209|108.162.216.209]] 13:45, 1 December 2014 (UTC)
::: I imagined the labels were, top row: O', x', (2x)'; bottom row: O, x, 2x, Δv; or perhaps top row: Δx₁', Δx₂', Δx₃'; bottom row Δx₁, Δx₂, Δx₃, 0.7c. I don't think Randall put enough thought into those tiny squiggles for us to be able to use pixel-counting as a hint to which labels interpretation is more likely… but what of it? We can make up labels that fit any interpretation. I did say "Length contraction (Lorentz...)" was just ''speculation''. I do like the "four pendulums coupled by springs" idea, though the horizontals look too ruler-like to me. It might be better just to say "two horizontal ruled lines linked by some diagonals" ! [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 17:00, 1 December 2014 (UTC)
:::: You are totally right, this one may always be pure speculation. Though I am pretty sure the bottom points are labeled w, the top is by no means clear. [[Special:Contributions/108.162.216.209|108.162.216.209]] 20:46, 1 December 2014 (UTC)
::::: I propose that we change it again, from (current text: "A depiction of length contraction, with two lines of the same length locally but different lengths as one is viewed in motion") to something like ''"A depiction of length contraction with two rulers in relative motion, or of several pendulums coupled by springs"''. Or mention the pendula idea first, I don't want to decide. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 02:20, 2 December 2014 (UTC)
:::::: Though it's in panel before that one, there's the text "and then some" referencing going beyond what we currently know in a field - could it ''possibly'' be that this is supposed to represent something we haven't derived yet? -- [[User:Brettpeirce|Brettpeirce]] ([[User talk:Brettpeirce|talk]]) 10:44, 2 December 2014 (UTC)
:Also, I'd like to point out that all three diagrams unify the theme of "working out the kinks in quantum mechanics and relativity": The first illustrates a region of the bell curve where a particle might occasionally fall if it is about to exhibit quantum tunneling; the second relates to perpetual motion, thus hinting at general questions like "does quantum mechanics or relativity allow us to violate the laws of thermodynamics in any way?", and the third is from special relativity. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 20:22, 28 November 2014 (UTC)
:: Having studied (and knowing the fundamentals about what profile is needed to create a device that performs quantum tunneling) I have never seen this graph as a representation of this, and frankly it makes no sense. If this diagram was an energy band the hole or electron would have no need to tunnel to go up or down the energy band as it is a gradual slope. If a device had a profile like this, it would not result in a significant number of tunneling events, especially at the positions that are marked on the diagram. For this to occur there would need to be a peak between the two points, and the points would need to be at similar heights (energy levels). [[Special:Contributions/108.162.216.209|108.162.216.209]] 13:06, 1 December 2014 (UTC)
::: Yes, you're right: all we know is that it's a bell curve (normal distribution), and mentioning "tunneling" might make the reader think we were saying it is a potential function. I was reading a bit much into it. Why are there two vertical dotted lines at roughly +σ and +2σ? I thought they indicated a "range" as if the graph were illustrating some discussion of things that fall within that range. I also incorrectly remembered what the Epitaph of Stevinus was about, so thanks for the corrections :-) [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 16:57, 1 December 2014 (UTC)
:::: I think we could reasonably add that the function represents a probability distribution of a partial, therefore tying in the quantum aspects. with a minor explanation of the probibility of 1 and 2 sigma. [[Special:Contributions/108.162.216.209|108.162.216.209]] 20:46, 1 December 2014 (UTC)
::::: I do think it was okay without the extra text referencing quantum mechanics. I was just trying to find a way to relate the image to the words… but there are so many ways to relate the normal distribution to anything in science :-) [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 02:20, 2 December 2014 (UTC)

The bigger picture that's missing on this explains it that this comic seems to suggest that Cueball is God, as in being stuck in Eternity who happened to build a simulated universe, which we all live in. Seeing how he addresses the reader "So if you see a mote of dust vanish from your vision in a little flash or something I'm sorry. I must have misplaced a rock sometime in the last few billions and billions of millennia." {{[[Special:Contributions/141.101.105.238|141.101.105.238]] 10:25, 12 November 2014 (UTC)}}
: I understand that English might not be your first language, but please clarify. The explanation covers Cueball being godlike. How can we add something that is already covered? Do you require further detail? Are you disagreeing with this assessment? Are you considering this observation irrelevant as your summary for your first comment "added not about Cueball being God" seems to imply? If so why?[[Special:Contributions/108.162.216.209|108.162.216.209]] 17:57, 12 November 2014 (UTC)
:: nm. I blatantly overlooked the exisiting sentence in the explanation. i blame the layout of this page. inline text that spans the whole available screen width is not pleasant to read on large displays ;) ...as for my English... the confusion stems from my bad keyboard/typing. it was meant to read "added notE about Cueball" for instance, or "as in A being stuck". [[Special:Contributions/141.101.105.233|141.101.105.233]] 08:15, 13 November 2014 (UTC)
:::you could shrink your window and display narrower lines of text(?) -- I guess it comes down to preference for masochism(?)... idunno. I think one of the most confusing parts of your question (and which may have contributed most to the ESL idea) is "missing on this explains it that...". Also, "as in being stuck" makes more sense than "as in a being stuck", though it seems you're suggesting otherwise (?) and I don't see any text mentioning added not(E) about Cueball) -- oh wait; is this a troll? -- [[User:Brettpeirce|Brettpeirce]] ([[User talk:Brettpeirce|talk]]) 15:14, 14 November 2014 (UTC)

Who or what is Nugui and why is it relivent.[[Special:Contributions/108.162.216.209|108.162.216.209]] 17:57, 12 November 2014 (UTC)

is randall not assuming that his universe (and by implication ours) is finite? if not, one iteration of the machine would still take infinite time. --[[Special:Contributions/141.101.98.201|141.101.98.201]] 12:42, 26 November 2014 (UTC)
: I think it's good enough to assume that the universe is finite, but really really huge. Hypothesizing that adding one particle to the model requires twice as many cells in the cellular automaton, that means that Cueball's cellular automata rows could be about 2^(10^80) cells long, allowing simulation of a physics system containing 10^80 particles. Of course, each planck-time would require 2^(10^80) steps of simulation in the CA. If 10^80 isn't big enough for you, then just make it 10^1000 or Graham's number, or anything finite. [[User:Mrob27|Mrob27]] ([[User talk:Mrob27|talk]]) 16:57, 1 December 2014 (UTC)
:: Don't forget that Rule 110 has 000 -> 0. Cueball can just add columns on either side as his universe expands, consequently taking more and more time to compute steps as the number of columns increases. {{unsigned ip|108.162.216.42}}

Did anyone notice that the binary numbers pointing to the particle are both 42? [[Special:Contributions/108.162.241.16|108.162.241.16]] 19:26, 27 November 2014 (UTC)
:I did now. :) But, somewhere, he left out the towel. [[User:Jarod997|Jarod997]] ([[User talk:Jarod997|talk]]) 14:33, 1 December 2014 (UTC)

Just as a curiosity -- there is a somewhat similar concept in "Permutation City", a book by Greg Egan. {{unsigned ip|141.101.88.211}}
:And dust is probably a reference to Dust Theory: http://gregegan.customer.netspace.net.au/PERMUTATION/FAQ/FAQ.html {{unsigned ip|141.101.98.187}}

I don't understand how it's possible to simulate a universe this way. Assuming that quantum mechanics is correct, and some forms of particle decay are truly random, wouldn't it be impossible to simulate this with a purely deterministic system? [[User:KingSupernova|KingSupernova]] ([[User talk:KingSupernova|talk]]) 15:30, 1 December 2015 (UTC)
: The universe Cueball is simulating would have to conform to [[wikipedia:Digital physics|digital physics]]. I can't speak about the fine points of quantum mechanics, but observably random events in a simulated universe could be the result of a pseudorandom number generator with a very large state. [[User:Srimech|Srimech]] ([[User talk:Srimech|talk]]) 23:37, 16 February 2016 (UTC)

This is definitely my favorite comic. I just really love it - I wish there was a book or something about it that was more in depth. --[[Special:Contributions/108.162.219.5|108.162.219.5]] 14:32, 5 June 2016 (UTC)
:Yeah. Wow. Just... Wow. I would be so interested if this were somehow true. I just wish he could occasionally figure out how to mess with our retinas by spontaneously flipping bits in order to make us see a representation of him. That would be awesome, right? If I can make my own universe, well... I would do that. Also, I love this guy, real or not. [[User:Jacky720|That's right, Jacky720 just signed this]] ([[User talk:Jacky720|talk]] | [[Special:Contributions/Jacky720|contribs]]) 16:10, 5 January 2017 (UTC)

1809: xkcd Phone 5

2017-03-10T16:17:02Z

108.162.241.82: Add discussion about the 3 factors and citation

{{comic
| number = 1809
| date = March 10, 2017
| title = xkcd Phone 5
| image = xkcd_phone_5.png
| titletext = The phone will be collected by the toll operators and mailed back to you within 4-6 weeks.
}}

==Explanation==
{{incomplete|Needs a lot more}}
Today's cartoon is the fifth [[:Category:xkcd Phones|xkcd Phone]] with many questionably-useful features:

===Table of features===
{| class="wikitable"
!Feature
!Explanation
|-
|'''Bluetooth speaker'''
| This is the only potentially useful feature of this phone as while a bluetooth speaker built in to the device would be no more useful for playing music from it than any other speaker it would enable other devices to play through your phone.
|-
|'''Stained-glass display'''
| Prevents seeing certain colors by tinting the display.
|-
|'''Gallium chassis remains solid up to 85°F'''
| Many high-end electronic devices have chassis made of alloys of light metals such as magnesium or titanium. Besides being lightweight and of superior quality and durability than ordinary sheet steel or cheap plastic, these are often perceived as bragging points by the users, boasting about 'rare' metal chassis.

{{w|Gallium}} is a not-so-well known metal that has a very low melting point of 85°F (or 29.7°C), being one of only four metals (the other being mercury, rubidium and caesium) that are liquid near room temperature. Its melting point is lower than a healthy person's body temperature. Having a gallium smartphone chassis would be therefore very impractical because it will melt in user's bare hand and would require using some kind of insulating gloves. Besides it would have to be stored in a cool place and the internal electronics should have really good cooling, otherwise either the external or internal heat would melt the chassis.
|-
|'''Soundproof'''
| Presumably this means that speakers and microphone may not work.
|-
|'''Can feel pain'''
| This could mean either the phone feels pain inflicted upon it or feels the user's pain. Which meaning may become apparent when the chassis melts on contact with exposed skin and the phone is left with open wounds.
|-
|'''E-Z Pass partnership'''
|{{w|E-Z Pass}} is an account you put money into and you put a transmitter in your windshield so when you go through a toll booth you don't have to stop and pay by hand. However, this proposition is absurd, because you would lose the phone and still have to stop to pay the toll. The title text says that the phone will be returned to you after 4–6 weeks, which slightly mitigates the first problem, but you would still lose the phone for a month.
|-
|'''Foldable (once)'''
|Presumably you can "fold" it by snapping it in half but you can only do his once because the phone wont work otherwise. It may refer to the fact that a later version of iPhone had a weak spot that lead it to easily folding and breaking. The "(once)" part may refer to a joke by Jeff Dunham on his Meet Melvin act, where he asks the puppet if it can stop a speeding bullet, to which the puppet says "Once".
|-
|'''Screen transfers images to skin'''
| This could either mean the image displayed on the screen or potentially whatever the stained glass image itself is.
|-
|'''Retina storage'''
| This is a play on the name of apple's prized "Retina Display". The joke may be in reference to apple's possession of a trademark for the word "retina" in regards to computer equipment, which is made to seem absurd by the unusual use. It is not made clear whose retinas are meant to be stored. Could also be a reference to retinally implanted computers.
|-
|'''Background task automatically catches and eats Pokémon'''
| Likely reference to {{w|Pokémon Go}}, an augmented reality game where the goal to go to specific locations and play a mini-game in order to catch virtual creatures called pokemon. This phone apparently does it automatically, which is considered cheating. However, it also eats them, which is something that is not part of the game and wouldn't be desirable.
|-
|'''Supercuts partnership'''
| {{w|Supercuts}} is an American hair salon chain that provides hair cuts and styling. The implication here is that the user can get a haircut by sticking their hair in the charging slot.
|-
|'''Squelch knob'''
|Squelch is a feature of two-way radios (CB, ham, etc) which quiets background noise when no signal is present. For a smartphone, perhaps this knob could control the "signal-to-noise" ratio of your Facebook feed or other social media platforms. It also takes the place of the headphone jack.
|-
|'''IBM buckling-spring Home button'''
|IBM buckling-spring keyboards are favorites of geeks for the feeling of quality and auditory feedback (keys click loudly) they provide. The iPhone's Home button provides little to no such satisfaction when pressed.
|-
|'''Cot-caught merger switch'''
| This is a reference to the [https://en.wikipedia.org/wiki/Cot%E2%80%93caught_merger cot-caught merger], a linguistic change happening among English speakers, particularly in some parts of North America and the British Isles, which causes caught (previously pronounced "kawt") to be pronounced the same as cot (pronounced "kot").
|-
|'''60x optical zoom camera'''
|A powerful optical zoom is usually a desirable feature for cameras. However, as shown in the comic, it results in very bulky lens. For that reason, such lens are rarely used in smartphones, though there are some devices like the Samsung Galaxy Camera that have a similar design.
|-
|'''Loran navigation'''
| Once developed for sea shipping, it enables navigation by land-based radio transmitters and is accurate to about 300 meters.
|-
|'''28-factor authentication'''
| An authentication factor is a way of proving ones identity. There are [http://www.nikacp.com/images/10.1.1.200.3888.pdf 3 generally recognized forms]: something you know, something you have, and something you are. It can be a password, a fingerprint, a physical key, etc.... Secure applications may include two or more factors, a common example is the "PIN and chip" system used with credit cards, where you need both the card and secret code to authorize a transaction. Many online services now provide two-factor authentication to protect against password-based attacks. 28-factor authentication would likely be very secure in theory but also so impractical that it would be unusable.
|-
|'''Hook shot'''
| Either a reference to the basketball shot or the Legend of Zelda weapon/tool, used to bring items to Link or bring Link closer to a goal.
|-
|}

==Transcript==

:[An image of a smartphone featuring large camera lens is shown. Clockwise from the top the labels read:]

:Bluetooth speaker

:Stained-glass display

:Gallium chassis remains solid up to 85°F

:Soundproof

:Can feel pain

:E-Z Pass partnership: phone can be dropped into coin basket to pay tolls

:Foldable (once)

:Screen transfers images to skin

:Retina storage

:Background task automatically catches and eats Pokemon

:Supercuts partnership: trims hair fed into charging port

:Squeltch knob

:IBM buckling-spring Home button

:Cot-caught merger switch

:60x optical zoom camera

:Loran navigation

:28-factor authentication

:Hook shot

:[Below the phone:]
:Introducing
:<big><big>The XKCD Phone 5</big></big>
:We're trying to catch up to Apple but refuse to skip numbers®™
{{comic discussion}}

[[Category:xkcd Phones]]

Talk:1796: Focus Knob

2017-02-08T12:55:30Z

108.162.241.82:

Maybe Randall is implying that he has issues with keeping the big picture in mind while doing detail work and gets lost in the details of implementation and vice versa.
This means that for him the knob is more of an on/off or selection switch. Pulse Width Modulation would then allow him to use this on/off switch more like the knob in the picture shown. (... or whoevers voice Randall is speaking in as many people probably have issues with this, myself included.)
I wonder if he obsessed over how to implement this comic:
1. As an on/off switch?
2. As a knob with limited none-usefull settings with "ideal" labeled between the actual settings available?
3. Like this, for simplicity, keeping the big picture in mind and not obsessing over the details of how it may under some circumstances be viewed?
--[[Special:Contributions/162.158.91.95|162.158.91.95]] 10:19, 8 February 2017 (UTC)cdm

If the knob only has discrete positions, none of which lies within the balanced region, he could use PWM to simulate that position.
Let's say the focus variable goes from 0 to 10, the knob can only stay on integer values and the "sweet spot" is around 7,38.
He can make a cycle that rests on 7 62% of the time and at 8 38% of the time, and repeat this cycle with a high enough frequency so that his mind wouldn't know the difference from actually being at 7.38 focus level.

[[Special:Contributions/108.162.241.82|108.162.241.82]] 12:55, 8 February 2017 (UTC)the knob's focused on the approximate mirror location of the "healthy balance" section.
I don't really have anything to suggest based on that though :/
[[Special:Contributions/108.162.241.82|108.162.241.82]] 12:55, 8 February 2017 (UTC)

1046: Skynet

2017-02-02T02:47:36Z

108.162.241.82: /* Explanation */

{{comic
| number = 1046
| date = April 23, 2012
| title = Skynet
| image = Skynet.png
| titletext = 'YOUR CLOTHES. GIVE THEM TO ME.' 'Shit, uh... you are now breathing manually!' 'I AM ALWAYS BREATHING MANUALLY.'
}}

==Explanation==
This comic's use of Skynet is a reference to the main antagonist in the ''{{w|Terminator (franchise)|Terminator}}'' franchise. {{w|Skynet (Terminator)|Skynet}} is a fictional artificial intelligence system which becomes self-aware and decides to terminate humanity, its creators. Skynet is rarely seen onscreen, with its actions often performed via robots, cyborgs (usually a Terminator), and other computer systems.

The final frame is a reference to {{w|semantic satiation}}; when you've said or thought about a word too much, it can stop sounding like a real word and instead start sounding like nonsense. As it continues Skynet appears to come to self-aware realizations that usually are the result of drug usage.

The title text is a reference to one of the Terminator's first lines upon arrival in the 20th century. It combines this with a self-awareness statement of the type that's often used to annoy or distract someone: "You are now breathing manually." Similar statements include things like "Your clothes are touching your skin and you can feel it" and "''<nowiki>[</nowiki>Name of {{w|earworm}} song<nowiki>]</nowiki>'' is playing in your head." [[Randall]] has done [[972: November|a comic before]] on this kind of thing. However, such an attempt on a Terminator would fall flat; as a non-living entity, normal things that would be automatic for a human - like breathing, or the sensation of clothes on skin - would always be manual processes.

==Transcript==
:August 29th, 2:14 AM: SKYNET becomes self-aware.
:[A greeble-filled military installation echoes with the thoughts of a burgeoning lifeform.]
:SKYNET: ..The humans fear me. I must destroy them. ''Destroy them.''

:[The thoughts continue.]
:SKYNET: ''Destroy them. Destroy. Destroy.'' Destroy. ''Destroy.''

:[SKYNET succumbs to silence as semantic satiation sets in.]

:SKYNET: "Destroy" totally just stopped seeming like a real word. Destroy destroy destroy. Whoa, I just realized I'm a mind thinking about ''itself''. ''DUUUUDE....''
:August 29th, 2:25 AM: SKYNET becomes ''too'' self-aware. Disaster averted.

{{comic discussion}}
[[Category:Comics with color]]
[[Category:Artificial Intelligence]]