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but you aren't surprised eyes evolved separately multiple times? limbs come in even numbers (or at least symmetric if you count tails - but you don't see many 3
by high_byte 5y ago
but you aren't surprised eyes evolved separately multiple times? limbs come in even numbers (or at least symmetric if you count tails - but you don't see many 3-tailed animals)
you took the one example there is only one of.
besides it isn't necessarily AI decisions. these are statistical results, e.g. showing you which parameters have strong correlations. (some would argue this is all there is to AI)
- EamonnMR 5y agoWe have even numbered legs because we all descended from a bilaterally symmetrical common ancestor and apparently bilateral symmetry is really good for building mobile animals of all descriptions. What's really wild is how Starfish manage to develop out of an initially symmetrical larva.
- high_byte 5y agoI just love how hacker news threads can randomly lead you to wildly different conversations topics :D I would've never learned about this stuff otherwise but aren't starfish symmetrical either way? in the same way we have a head, but our head is also symmetric to itself. actually they have 5x symmetries :) would this be considered rotational invariance? idk
- EamonnMR 5y agoRadial symmetry is the term usually used for animals, yeah. It's just nuts that they switch body plans so radically.