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> that we require a much lower initial learning rate.

The way I understand it is that is not so much required as not selected for. We could certainly be able to walk at one day old if evolutionary pressure made it necessary, but it prioritized other aspects in our cognitive development to survive so we don't. It's not as if we say "oh, horses can walk early and therefore are incapable of rational thought" we evaluate them on their own merits.



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