It reminds me of how our knuckle-walking ape relatives likely evolved to do so _from_ bipedalism: https://en.wikipedia.org/wiki/Knuckle-walking#Evolution_of_knu

It reminds me of how our knuckle-walking ape relatives likely evolved to do so _from_ bipedalism: https://en.wikipedia.org/wiki/Knuckle-walking#Evolution_of_knuckle-walking https://en.wikipedia.org/wiki/Knuckle-walking#Evolution_of_k... Evolution has a quite different view of the "linearity" of "progress".