explain xkcd - User contributions [en]

Talk:2761: 1-to-1 Scale

2023-04-11T12:16:03Z

162.158.239.25: comment

Really want an explanation for this one. [[User:JobbieJimmies|Melomaniac]] ([[User talk:JobbieJimmies|talk]]) 03:23, 11 April 2023 (UTC)

My comment got deleted by a bot!!! [[User:Unreliable Connection|2659: Unreliable Connection]] ([[User talk:Unreliable Connection|talk]]) 03:23, 11 April 2023 (UTC)
:RIP... [[User:JobbieJimmies|Melomaniac]] ([[User talk:JobbieJimmies|talk]]) 03:25, 11 April 2023 (UTC)
:No, UC, it just got overwritten by the 'bot, when it did its job and (re)created the whole initial state of the various pages to depict the new comic coming out. (Noting that you'd not set them all up fully/correctly.)
:That you had spotted it already and had ''just'' gotten in ahead of the 'bot clearly isn't something it was prepared to handle. But as someone spotting it can usually wait a short while for the 'bot to catch up, I don't think it's a problem. In fact, you could have just copied your old contributions into the now receptive page(s), with nary any comment. Too late now. [[Special:Contributions/172.70.90.101|172.70.90.101]] 03:44, 11 April 2023 (UTC)

:: This may have broken the next link on the previous page. --[[Special:Contributions/172.71.160.36|172.71.160.36]] 06:41, 11 April 2023 (UTC)

The lines represent the surfaces of the planets I think, so it's basically all the planets overlaid on top of each other. [[Special:Contributions/172.71.142.35|172.71.142.35]] 03:28, 11 April 2023 (UTC)

:Yup, I think it's what he meant - but I find it unlikely that the gas giants would have this clear cutoff of a "surface". [[Special:Contributions/162.158.189.241|162.158.189.241]] 03:34, 11 April 2023 (UTC)
::If there is a gas - liquid phase transition (and I think at least the gas giants have them): Why not? OK, you could see "rain" as blurring a clear cutoff, but wouldn't that also apply to Earth, then?[[User:Tier666|Tier666]] ([[User talk:Tier666|talk]]) 08:04, 11 April 2023 (UTC)

I’d think the same citation as stands for ridiculously large would also cover larger than currently exists on earth, and his that citation is not in fact needed? [[Special:Contributions/162.158.174.186|162.158.174.186]] 06:53, 11 April 2023 (UTC)

:It seems like the gas-covered worlds are explicitly those with clearly cutoff "surfaces," so maybe in those cases the cutoff is some specific gas density -- which occurs at a consistent radius throughout the planet, thus creating a flat surface. While for rocky worlds (except Venus, which is treated like a gas planet here), a density cutoff can lead to bumpiness due to terrain. [[User:Trimeta|Trimeta]] ([[User talk:Trimeta|talk]]) 03:57, 11 April 2023 (UTC)

On Twitter there seems to be concern that all planets are depicted flat. This may make this a contribution/mockery of the ongoing [https://en.wikipedia.org/wiki/Flat_Earth Flat Earth] discussions in some corners of the internet. --[[Special:Contributions/198.41.242.132|198.41.242.132]] 06:49, 11 April 2023 (UTC)
:You can't see the curvature of the Earth when standing on it; doesn't mean it's flat. Since we're looking at the planets at a 1:1 scale, we're literally only seeing a couple of <em>inches</em> of each of their edges (notwithstanding the whole gas-giants-don't-have-a-sharp-edge issue). [[Special:Contributions/162.158.239.20|162.158.239.20]] 12:06, 11 April 2023 (UTC)

The display for an uncropped version of the image would not only be larger than any display on earth. It would be larger than earth. [[Special:Contributions/162.158.86.243|162.158.86.243]] 06:59, 11 April 2023 (UTC)
:By necessity, at least as large as Jupiter. Maybe slightly above two Jupiters (max dimension squared compared to display height*width of any common aspect ratio) if you wanted to not overlay any of the others at all. And make the lower limit a packing-problem, then add a buffer so there isn't the actual need for any to touch. [[Special:Contributions/172.70.90.253|172.70.90.253]] 10:02, 11 April 2023 (UTC)

1-to-1 scale means 'assume all planets are the same size,' right? I see Earth's grass is shown to be as large as Martian rocks, because Earth is a third again as large. (At the scale where grass is visible, Earth looks flat.) At first I thought the point was that altitude variation in cloud-tops varied so little that a gas giant shrunk down to Earth size would be featureless and have a distinct edge, but that's wrong. Ground isn't cloud-tops. Do gas giants have any solid ground? We've seen Jupiter eat comets, and it makes sense they would've collected at least some minerals and metals. According to [[https://www.teachastronomy.com/textbook/The-Giant-Planets-and-Their-Moons/Internal-Structure-of-the-Gas-Giant-Planets/|Teach Astronomy]], gas giants have Earth-sized solid cores. I'm guessing gas giants' immense gravity compresses their cores into featureless spheres, which, if scaled to Earth-size and viewed at the scale where one could see grass, would look flat. Yes?
[[User:EllenNB|EllenNB]] ([[User talk:EllenNB|talk]]) 10:14, 11 April 2023 (UTC)
:Gravity itself won't compress (and 'flatten') the cores. "Shell theory" shows that gravitational force only counts from the proportion of the body that is within the radius of the bit you're concerned with. But there'll also be the external pressure (from being at the bottom of a thick atmosphere that ultimately ''is'' above far more of the planetary mass) and possibly a degree of compression density to make any Earth-sized core slightly heavier than if it was just a bare core of the same size but shorn of outer layers.
:As to flatness, I can take you to very flat stretches of Earth and very lumpy bits (depends which direction I go, from where I am now), all within 30 minutes' drive. We can'teven know how representative a sample of planetary cross-sections we are seeing (once we get over the issues of gas/space boundaries for gas-giants), but I bet there are bits that resemble the diagram... If you ''really'' want it to be so real. [[Special:Contributions/172.71.242.87|172.71.242.87]] 11:05, 11 April 2023 (UTC)

There are several pieces of information here that are featured but don't make sense to me. What's the function of the dark polygon in the center? Why are the lines showing each surface going in random directions? Why is the surface of each planet so flat at a full scale rendition? When I look out my window at full sized Earth, it's not flat. It's quite bumpy, actually. But perhaps he doesn't mean these are full size, he might be saying that they're all shrunk, but the same amount, so 1:1:1:1:1... but even then, I'm totally lost.

"What's the function of the dark polygon in the center?"
I think it is a view of the dark sky, "above" the surface of the Earth, Mars, etc. [[User:Rps|Rps]] ([[User talk:Rps|talk]]) 11:43, 11 April 2023 (UTC)

Is this an ant on earth, over the letters "EA" ? On my monitor, set for my less-than-perfect vision, it is 15mm long, which (at a 1:1 scale) makes it a cow ant, or a large african ant. I guess people with normal vision get fire and carpenter ants instead? And those on smartphones get pavement ants?[[Special:Contributions/172.68.50.73|172.68.50.73]] 11:00, 11 April 2023 (UTC)
:I do believe it is! It's 6 mm on my desktop monitor and 3 mm on my phone. We also don't know what side of the Earth we're looking at, so I suppose it could really be any ant, including the one in your local area. I like to think it's a black garden ant (''Lasius niger''), since I'm most familiar with those :) [[Special:Contributions/162.158.239.25|162.158.239.25]] 12:16, 11 April 2023 (UTC)

Talk:2742: Island Storage

2023-02-25T15:45:29Z

162.158.239.25:

Hey at least New Zealand made it onto this map! [[Special:Contributions/172.70.178.48|172.70.178.48]] 17:46, 24 February 2023 (UTC)

Of course the proper storage mode involves packing the continents back to Gondwada layout and then hiding them on the far side ;-) [[User:RIIW - Ponder it|RIIW - Ponder it]] ([[User talk:RIIW - Ponder it|talk]]) 18:59, 24 February 2023 (UTC)

It seems worth noting that the scale was distorted to make some islands fit. Greenland has a longitudinal height of 2671 km, but has been shrunken considerably in order to be wedged into a 1725 km gap in the Gulf of Mexico. [[User:Altay|Altay]] ([[User talk:Altay|talk]]) 19:58, 24 February 2023 (UTC)
:I thought it was the size of Africa. ---[[User:Theunlucky|Theunlucky]] ([[User talk:Theunlucky|talk]]) 20:35, 24 February 2023 (UTC)
:Maybe he started with a cursed projection that makes Greenland smaller. [[User:Barmar|Barmar]] ([[User talk:Barmar|talk]]) 20:35, 24 February 2023 (UTC)

Seeing the ?? next to the British Isles, I think part of the islands there are the Danish islands squeezed aside to make space. (Okney Islans, Fair Isle, Shetland, Hebrides, Føroyar, etc. are probaly used to fill the gaps...) [[Special:Contributions/162.158.95.82|162.158.95.82]] 20:54, 24 February 2023 (UTC)
:Those are all pretty small. I think it's more likely Svalbard/Spitsbergen. [[Special:Contributions/172.70.131.181|172.70.131.181]] 02:09, 25 February 2023 (UTC)
::There's quite a lot of Nowegian islands, some of which are fairly large. --[[Special:Contributions/172.69.79.184|172.69.79.184]] 07:37, 25 February 2023 (UTC)

Where do we mention the typo in the title text? (Should be "Scandinavian".) --[[User:Flicky|Flicky]] ([[User talk:Flicky|talk]]) 12:30, 25 February 2023 (UTC)
:I'll see what I think works. If all else fails, I could add a Trivia section (as I'm going to add an auxilliary reference), but maybe I don't need to... [[Special:Contributions/172.70.86.128|172.70.86.128]] 13:15, 25 February 2023 (UTC) EDIT: Edit done. But some further tweaks planned, if no-one else improves/revises it before I get there.

I think the additional island nudged into Scandinavia with Britain and Ireland might be Tierra del Fuego at the bottom tip of South America? It sure looks like it. [[User:XKCDFan|XKCDFan]] ([[User talk:XKCDFan|talk]]) 13:45, 25 February 2023 (UTC)

No, I believe Tierra del Fuego has been relocated to St. Lawrence Bay.

Talk:2715: Pando

2022-12-23T12:56:58Z

162.158.239.25:

Mass is around 6 million kg.
Area is 43.6 ha. In SI units, that's 436,000 square metres... but I'd be tempted to say "over 400,000".

c/f https://en.wikipedia.org/wiki/Mount_Ingino_Christmas_Tree

I was about to write the following as a first explanation, but by the time I'd drafted it, there already was one. Anyway, here it is,
<hr>
Pando is a large colony of aspen trees in Utah, USA, which are all natural clones, connected by a root system. It is the largest single living organism by mass, at around 6 million kilograms.

Randall postulates that, if wrapped in fairy lights, it would count as the world's largest Christmas Tree, surpassing others such as Mount Ingino.

[[Special:Contributions/162.158.34.75|162.158.34.75]] 12:24, 23 December 2022 (UTC)

How do you add pictures? There are some things here which a piture would be great for, but I don't know how. I'll check the manual later if I don't get a reply. [[User:SqueakSquawk4|SqueakSquawk4]] ([[User talk:SqueakSquawk4|talk]]) 12:33, 23 December 2022 (UTC)

According to scientist, this is the largest living organism: https://theconversation.com/meet-the-worlds-largest-plant-a-single-seagrass-clone-stretching-180-km-in-western-australias-shark-bay-184056

Talk:267: Choices: Part 4

2022-11-21T00:41:04Z

162.158.239.25:

Has the theme of making out with yourself popped up again? (No examples come to mind, but there's more than 2,000 of them, so I might have missed some.) And if there are more examples, are there enough to turn them into a category page? [[User:GreatWyrmGold|GreatWyrmGold]] ([[User talk:GreatWyrmGold|talk]]) 05:08, 17 April 2019 (UTC)
:I don't think so, but here's a similar SMBC for you: https://www.smbc-comics.com/comic/2007-07-13

2699: Feature Comparison

2022-11-18T07:42:14Z

162.158.239.25: /* Explanation */ remove random bold letters

{{comic
| number = 2699
| date = November 16, 2022
| title = Feature Comparison
| image = feature_comparison_v2.png
| imagesize =
| noexpand = true
| titletext = Below the Web, and the Dark Web, a shadowy parallel world of Cybiko users trade messages on the Translucent Neon Plastic Web.
}}

==Explanation==
{{incomplete|Created by a MULTIHOMED MESH NODE. Read HTML comments to expand. This page is the subject of vandalism, and the comic itself contains severe errors. Assume everything is wrong. Do NOT delete this tag too soon.}}

This comic compares different remote communication services, including the relatively well-known {{w|Twitter}}, {{w|Discord}}, {{w|Mastodon (software)|Mastodon}}, {{w|Facebook}} (FB), {{w|Slack (software)|Slack}}, {{w|Signal (software)|Signal}}, {{w|Internet Relay Chat}} (IRC), {{w|Tumblr}}, {{w|Reddit}}, and {{w|SMS}} mobile telephone text messages. It also includes the less well-known {{w|Cybiko}}® wireless handheld computer for teens. For each of these, it purports to indicate which of various features they support. The comic illustrates how feature comparison charts/infographics can be abused by sellers who are trying to make their products look better than they really are, compared to their main competitors.

===Services===


;Cybiko® wireless handheld computer for teens
:This was a handheld computer designed for teens and released in 2000, which featured its own two-way radio text messaging capabilities along with built-in games and a music player. Additional information about it is available at [http://cultureandcommunication.org/deadmedia/index.php/Cybiko the Dead Media Archive], as the device has not been manufactured since 2003.
:The chart suggests that the Cybiko has an advantage over all of the other listed communication services, as it is capable of all eight of the table's listed features listed, with none of the others being close.
:Purchasing a Cybiko or finding friends who own one can be its own challenge, as device was discontinued nearly 20 years ago. Additionally, the Cybiko is a ''device'' rather than a ''service''; a more fair comparison would be to a modern {{w|smartphone}}, which can provide get most of these features via multiple apps, including those apps written especially for such rival services.

===Features===
;Direct Messaging
:Known by {{w|Private message|various names}}, across different platforms, but commonly abbreviated to "DM" or similar. DMs are person-to-person (or possibly person-to-group) communications that do not rely upon the privacy, membership or persistence settings of a given Group Chat 'room'.
:All the services being compared possess the ability to make such direct messages, with sometimes subtle differences in implementation that dictate whether asynchronous or even 'live' two-way conversations are dominant, and the given list is far from exhaustive with email, '{{w|talk (software)|talk}}'-type programs and others having already established the principles used in any particular service's implementation.

;{{w|Mesh networking}}
:A form of connectivity that reduces or removes the need for a centralized server or predefined gateways to a communications 'backbone'. Nodes communicate directly with any nodes that happen to be contactable, and from there may connect through to whatever nodes are in mutual contact, or to be found further afield, either in real-time or asynchronously.
:The Cybiko has this ability, as well as wireless message delivery because it communicates directly to other devices via radio, hence the ability to operate without any internet connectivity at all. There are several {{w|Comparison of software and protocols for distributed social networking|ongoing projects for distributed social networking}}, but all of these additionally require a hardware layer to provide signalling via their respective protocols; which the Cybiko purportedly provides via its decentralized radio capabilities.


This comic contains several errors. Mastodon doesn't require a central server, or support file transfer. Discord does not provide for user-run instances itself. (There are two third party Discord server implementations, but it is unclear whether those could be counted as run by users.) Slack does not provide for user-run instances itself. Reddit does not provide for user-run instances at all, only user moderation and administration. IRC does require at least one central server,[https://www.rfc-editor.org/rfc/rfc1459.html] and relegates file transfer support to the domain of client extensions. Signal is heavily used in user-run instances via a diverse ecosystem of code forks; many of these don't require a central server, a couple use mesh networking. Reddit occasionally does have built-in games. Finally, Tumblr does have a form of group chats.

An earlier version of the comic suggesting that Mastodon has no user-run instances was corrected by [[Randall]] shortly after publication of the original.




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

:[A table with checkmarks to indicate which features various messaging services have. Each column is labeled with a service name and its logo beneath, except that for the last column, the device's longer name is written higher than all the other services' names, with an arrow pointing to a drawing of the device below it.]

{| class="wikitable"
|-
!
! Twitter
! Discord
! Mastodon
! FB
! Slack
! Signal
! IRC
! Tumblr
! Reddit
! SMS
! Cybiko® wireless<br>handheld computer<br>for teens (2000)
|-
! Direct messages
| ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || ✓
|-
! Group chats
| ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || || ✓ || || ✓
|-
! File transfer
| || ✓ || ✓ || ✓ || ✓ || ✓ || ✓ || || ✓ || || ✓
|-
! Built-in games
| || ✓ || || ✓ || || || || || || || ✓
|-
! User-run instances
| || ✓ || ✓ || || ✓ || || ✓ || || ✓ || || ✓
|-
! Doesn't require central server
| || || || || || || ✓ || || || || ✓
|-
! Mesh networking
| || || || || || || || || || || ✓
|-
! Wireless message delivery works without internet
| || || || || || || || || || ✓ || ✓
|-
|}

{{comic discussion}}
[[Category:Charts]]
[[Category:Social networking]]