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Men have always been encouraged to have sex with a lot of different partners, not to sire children with them. (Children were, of course, the reason that men developed the urge, but the urge stands separately, as shown by the fact that men do not decrease their mating habits when there is no chance of pregnancy.) That's clearly still the case in modern society. Spend 10 minutes in a high school locker room and you'll see that.

Darwinian theories about women being wired differently than men are perpetuated because science backs them up. We don't know exactly how, or how much of the difference is genetic vs. cultural, but it's just a reality that men and women have different motivations, aptitudes, etc.

Nobody would argue that evolution has made us different physically. Men are much stronger and better coordinated. Women are more able to bear pain and often have stronger senses of smell and taste. Why would it not stand to reason that evolution might make each sex better at some mental tasks than the other, just as it has physical? It's not sexist to point out that male weight-lifters are able to bench more because men have been designed by evolution to be stronger. Why is it sexist to say we show up more frequently in science departments because we have also been designed by evolution to be better at math?

Sexism is not believing that one sex is different than another, it's believing that those differences make it inferior.

Why is it sexist to say we show up more frequently in science departments because we have also been designed by evolution to be better at math?

Because compared with bench-pressing, claims of mathematically ability being better in men (and partially ordered, to boot) is seriously jumping the gun.

We know what's involved in a bench press. We understand how testosterone stimulates the production of muscle. We are nowhere close with mathematical ability. We have no theory of mathematically ability -- we really don't know what it means, or if the simplest metrics are even useful for higher level math. We have no experimental results, because we have no controlled variables. We have few pieces of data, none of which are conclusively disentangled from cultural and historical influence.

In the past two decades, the number of women scoring highly on the IMO, the IOI, the Putnam, and SMPY has gone up by roughly a factor of six. Doubtful that the number of girls with 'math talent genes' have sextupled that quickly. Isn't this evidence that we should hold off on our conclusions?

I don't think anyone would claim that we know or understand all of those differences yet. I don't even really have an opinion on the math one, it's just the most commonly cited so I used it as example.

But we need to be open to the fact that they are there. It hinders scientific and social progress to scream sexism any time someone suggests the sexes might be different in some way.

It hinders progress in the same way to scream anti-sexism when what is really being suggested is a reasoned discussion.

It might be absurd to assert equality, but it's a decent postulate to take while we don't know for sure. And I think asserting the certainty of particular innate differences, without sufficient evidence, is more dubious than the corresponding assertion of equality.

Well, the one thing we know for sure is that we're different. We just don't know all of the why's and how's. So overall equality (in the sense of similarity) is the only thing we know to be incorrect.

Lawrence Summers, if you read or watch the talk, did not, in fact, assert that the dearth of women in science was explained by biological factors. He brought up the question. Even considering the insufficiently delicate way he put it, there's an exceptionally important distinction. Unfortunately, people heard what they wanted to hear.

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Not convinced? By the same theory, one would think that men in today's society would be highly encouraged to have children with multiple partners -- at roughly age 18. Yet, we discourage both for no apparent genetic benefit. Rather, it's for a societal benefit.

As I note below, often societal benefit trumps genetic benefit, which remains true as long as there is a high genetic correlation between the people in that society.

There is a difference between acknowledging a difference exists, and acting on that difference in a discriminatory manner.

Women and men are wired differently. That much is a fact. The obvious, those of reproductive organs, are visible and nobody would deny them. Those in the head, are invisible and so somehow made into a sensitive issue, but significant differences exist. Women have a larger corpus callosum than men; one could suppose then, that their hemispheres talk faster with each other: efficient multitasking. There is nothing wrong with this step: it is the same kind of reasoning that you apply to saying that giraffes have long necks to eat food in trees.

The problem about discrimination is what happens after this step: a man is unable to multitask. A giraffe is unable to eat food that is not in trees.

But these are two things. And most knee-jerk antidiscriminationist rhetoric lumps them into one. Also, I am not calling you one :)

The problem about discrimination is what happens after this step: a man is unable to multitask. A giraffe is unable to eat food that is not in trees.

We are in agreement, and I give you credit for explaining the point better than I did.

I also probably should have been more specific when I said it's dangerous to believe that "women [are] wired for different work than men". I'm not arguing that women and men are the same in every way. Clearly there are differences. I'm saying it's unfortunate to take a problem like the low number of women founders and to use Darwinian theory to say "women just aren't wired for this type of intellectual work." This makes it all too easy to overlook other causes of the problem and, as you point out, can lead to discrimination in various forms.

Indeed, someone just posted this timely article on HN today about a study showing that "boys are not innately better at maths than girls, and any difference in test scores is due to nurture rather than nature." http://education.guardian.co.uk/schools/story/0,,2283083,00....

That's a good example of what can be found where feminism and "science" intersect.

Here's a good rebuttal. http://www.renewamerica.us/columns/duke/050106