There's plenty of evidence some of which I mentioned. The fact that we see it all over the animal kingdom is one piece.
Sexual dimorphism elsewhere in the animal kingdom is not directly evidence of what sexual dimorphism is like in humans.
This is a true statement. And yet it does not refute my point at all. Do you get why?
Hint: it's in the adverb you used
The fact that it accurately predicts how men and women DO generally behave is another.
What accurately predicts what, and how do you properly exclude socialization/environment from the factors here?
The hypothesis that men and women evolved to have different behaviors predicts that men will be more interested in many sexual partners whereas women should value fidelity from fewer partners, that men will be more interested in looks than women while women will be more interested in commitment and skill and social status than men, that men will be more offended if their woman bangs another man than if she becomes emotionally, but not sexually, involved with one, but vice versa for women, that men will generally be more interested in pursuing power and social status directly as a means to improve their attractiveness whereas women will focus on physical attractiveness....and on and on and on.
All of these predictions are borne out by what we see in the real world; many of them appear in all human societies. See the book "Human Universals" by Donald Brown for many many more.
You can't entirely rule out the influence of socialization, but when a sex difference consistently appears in EVERY SINGLE HUMAN SOCIETY, you have excellent reason to believe that that difference is due to the way humans are hardwired rather than to socialization. Here's how it works. The view that humans are socialized in a certain behavior would predict that given the massive diversity of humanity, that behavior should not appear in all of them. If it DOES appear in all of them, there would have to have been an extraordinary collection of coincides leading to that, too much to be accepted when there is a far more obvious and parsimonious explanation at hand - namely, that humans evolved that behavior for some reason or other.
I don't know how you read any of that into what I said, but okay.
It seems to be the implicit logic. I certainly can't see any other logic for it.
I made it very clear that, even if statistical correlations do exist between personal characteristics and sex, in a directly causal manner even, there is still no impetus to assign people social roles based on sex.
And I agreed
This falls apart a bit if you consider that things are happening to society which have never happened before. It's possible for social "universals" to all of a sudden become less universal due to variables changing which haven't changed before. Post-industrial societies the sort of which we live in now simply haven't happened before.
Of course. And yet those societies STILL share many, many characteristics with the most far-flung, remote hunter-gatherer tribes. If something stops being universal, then it is removed from the list of universals. But the fact that so many exist is extremely telling. Attempts to minimize it are just holdouts of the view (dogmatic and empirically unjustified) that human nature is taught and little or none of it is innate.
In other words, even if something is universal across all cultures, it can still be due to social factors in that all those cultures still have many cultural influences in common.
But like I said above, this is science and we have to consider parsimony. The one view (that universals probably derive from innate characteristics) is quite straightforward, while the other view (universals probably derive from the same social influences affecting all societies) demands an incredible amount of coincidence and parallel development of ideas and culture in vastly divergent cultures over tens of thousands of years.
Now this is not to say that many of the same pressures and impetuses (impeti? i dunno) dont' exist in many cultures. But if human nature was entirely learned, that wouldn't be true. Because human nature is in many ways the same no matter where you are, this gives rise to those pressures which lead to the development of social norms. Either way, when you trace it back far enough, you end up in evolution and biology.
Yes, and my point is that these simple facts don't really affect our lives as much as they perhaps once did, and only do in limited contexts. Childbirth is less of a toll on women than it was in basically any other point in history, by far (few women die during childbirth these days, whereas it was fairly common throughout pretty much all of history), jobs are more sedentary on average, etc.
That's true, of course, but it doesn't wipe our evolutionary history out of existence. We are meat computers built by evolution and we cant' change that fact. We can change how we behave to one another but we can't change what we are. Again, it seems like you're assuming I'm saying that because humans evolved to do certain things, therefore we SHOULD keep doing those things, or because humans historically had certain gender roles, we SHOULD maintain those gender roles. I said nothing of the kind.