The nature vs. nurture debate about gender.

Another in a series of paradoxes:
So-called "gender" feminists assert a blank slate theory: that men and women are inherently the same. Apparent cognitive and behavioral differences between men and women are purely a product of women’s subordination in a repressive patriarchy, they say, and should gradually disappear as women rise to a more equal footing with men.

But if the opposite were true, it could mean that we've been doing feminism all wrong – which could explain a lot about the movement's widespread stall after nearly forty years of trying to realize its promise.

Neuroscience has revealed gender differences in every major part of the brain. Many studies show brain regions that manage emotions, reasoning and even motor control are not the same in men and women. There are also huge gender differences in hormones that affect brain chemistry. One theory asserts that gender differences in brain function and chemistry largely cancel each other out so as to preclude gender differences from being seen in behavior.