David Reich

So it will solve one of your two problems.

It won't solve the other one, so you need to solve the other one.

So the other one you can solve either by natural selection or you can solve it by social selection.

So by the way, patrilineality and matrilineality are the rule, not the exception in human communities.

Usually communities sort of follow, have continuity along the male or the female line.

And usually it's patrilineality, sometimes it's matrilineality.

So

You can also have phenomena like social selection.

So it could be that once you have kids of someone whose father, for example, is from the outside community, that those, the male, usually in most communities,

females all reproduce.

Like that's typical today.

Like usually women have kids if they can.

But men in traditional societies are actually very variable in their reproductive success.

A large fraction of men never have kids.

And then there's a relatively smaller number.

There's a subset of men have many kids.

Yeah.

with many women.

And so there's competition among men for kids.

So in this context where males are competing for access to females, then female mate choice begins to be an important process.