Everything I’m finding on Google is saying Morocco, with scientists suggesting we probably evolved all over Africa.

A brain covered in knives does kinda seem like a sleeper S tier build

A useful way to think about it (and I think what the OOP is saying) is to think about it as a scale from 0-100. Where 0 is like the coldest humans can deal with and 100 is the hottest humans can deal with. Obviously this isn’t strictly true (it gets to like 115 in death valley) but as an imperfect generalization it’s pretty useful.