2418: Metacarcinization

Explain xkcd: It's 'cause you're dumb.
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Metacarcinization
Scientists still don't know how marine biologists manage to so consistently bring up whalefall ecosystems, when relevant conversational openings are so few and far between.
Title text: Scientists still don't know how marine biologists manage to so consistently bring up whalefall ecosystems, when relevant conversational openings are so few and far between.

Explanation

Ambox notice.png This explanation may be incomplete or incorrect: Created by a HEAVILY OPTIMIZED CRAB. Please mention here why this explanation isn't complete. Do NOT delete this tag too soon.
If you can address this issue, please edit the page! Thanks.

The comic strip opens with a conversation between White Hat and Cueball as they are walking together. White Hat asks Cueball if he has seen a video of a crow sledding on a roof -- presumably this one, or one of its later viral reposts. Cueball remarks that it's a cool example of tool use by animals, a sign of intelligence (which crows are famous for). He then points out that sea otters use tools too, namely using stones to crack open crab shells. This in turn leads him to bring up the fact that the 'crab' body plan has evolved multiple times, a phenomenon known as carcinization, previously discussed in 2314: Carcinization. In that strip, Cueball turned into a crab shortly after hearing about carcinization, so presumably White Hat will likewise be transformed momentarily.

Transcript

[White Hat and Cueball are walking together. White Hat has his smartphone out in his hand.

White Hat: Have you seen this video of a crow sledding on a roof?

Cueball: Yeah! It's always cool to see animals using tools

Cueball: Like how sea otters use rocks to open crab shells

Cueball: Hey, did you know the "crab" body plan has evolved multiple times?

Caption: Regardless of the starting topic, any conversation with me eventually converges to carcinzation

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Discussion

Up until the moment I opened the video, I read every instance of "crow" in the comic and explanation as "cow"... Was a bit disappointed by the video! 141.101.105.40 19:39, 29 January 2021 (UTC)

I think the crow in the video is actually a hooded crow (Corvus cornix) rather than a jackdaw... 108.162.245.146 20:39, 29 January 2021 (UTC)

Good catch. 172.68.129.134 20:58, 29 January 2021 (UTC)

I think the crow in the video needs more training. Seems she's not really sure how the sledding works. -- Hkmaly (talk) 01:04, 30 January 2021 (UTC)

Coincidentally, I just heard about a pet/tame duck (called 'Duck') who is regularly bodysurfing with their human in Australia. No idea where crabs come into that. They've probably been eaten by the sharks, or poisoned/envenomated by almost every other creature in and around Australia. 162.158.111.185 04:34, 30 January 2021 (UTC)

hey! some of the sheep aren't! Helpimstuckinahole smith (talk) 05:47, 31 January 2021 (UTC)

Tool use is another trait that has independently evolved multiple times, in insects, cephalopods, fish, reptiles, birds, and mammals, presumably because it’s so useful. 162.158.63.86 06:36, 30 January 2021 (UTC)

Have a read of "Are we smart enough to know how smart animals are?" by Fran de Waal (W.W. Norton)

I too independently evolved into talking about carcinisation constantly. Hm. 162.158.34.28 00:12, 31 January 2021 (UTC)

Speaking of carcinisation, did you know that Squat Lobsters are a thing? These Are Not The Comments You Are Looking For (talk) 23:52, 31 January 2021 (UTC)