In behavior, as in appearance, every human individual is unique. - Matt Ridley

At some point, human intelligence became collective and cumulative in a way that happened to no other animal.

These concerns (that is, about differences being used to justify unequal treatment) are fair. But just because people have exaggerated sexual differences in the past does not mean they cannot exist. There is no a priori reason for assuming that men and women have identical minds and no amount of wishing it were so will make it so if it is not so. Difference is not inequality.

Human beings innovate by combining and recombining ideas, and the larger and denser the network, the more innovation occurs. Once again, notice that this is not policy.