In a blog that is mostly political in nature, David Friedman asks some uncomfortable questions about two different groups of people, the right, who don't want the teaching of evolution, and the left, who don't understand the implications of it. He writes:
Consider the most striking case, the question of whether there are differences between men and women with regard to the distribution of intellectual abilities or behavioral patterns. That no such differences exist, or if that if they exist they are insignificant, is a matter of faith for many on the left. The faith is so strongly held that when the president of Harvard, himself a prominent academic, merely raised the possibility that one reason why there were fewer women than men in certain fields might be such differences, he was ferociously attacked and eventually driven to resign.
Yet the claim that such differences must be insignificant is one that nobody who took the implications of evolution seriously could maintain. We are, after all, the product of selection for reproductive success. Males and females play quite different roles in reproduction. It would be a striking coincidence if the distribution of abilities and behavioral patterns that was optimal for one sex turned out to also be optimal for the other, rather like two entirely different math problems just happening to have the same answer.
This spills over to physical constitution as well. Men expend energy differently than women do. Also, although there is tolerance in society for transsexuals and homosexuals, nature does not see it that way and they wind up being evolutionary dead-ends. Yet, no one speaks of this in academic circles. Read the whole thing.