A lot of assumptions here. What intellectual advantages do chimpanzees have over humans? Their survival advantages over us are in other planes. Clearly at some

A lot of assumptions here. What intellectual advantages do chimpanzees have over humans? Their survival advantages over us are in other planes. Clearly at some stage between the last common ancestor and us there was an intellectually inferior, yet more or less human. Sure they could maybe sleep naked in the cold, run marathons in 1:30 or even, as a facet of mental ability, have superhuman reaction time, but they would just have no place in the human society. Your refusal to even consider a genetically defined human subset of inferior intellect is quite typical, I suppose because you don't like the conclusions for if it existed.