" The combination of low empathizing and high systemizing abilities might mean a rapid ascent of a man to the top of the social pile. This is because men in every culture compete against each other for success in social rank. As we mentioned above, a male’s position in the social dominance hierarchy in most species directly affects his fertility. For example, in some species it is only the alpha male that gets to reproduce. And even today, among modern humans, men with higher social status tend to have more children and more wives, compared with men of lower social status. To achieve social dominance, males use physical force, or the threat of force, or other kinds of threat (for example, withdrawing support). That is why, in most species, males are bigger, stronger, and more aggressive than females. "

― Simon Baron-Cohen , The Essential Difference: Male And Female Brains And The Truth About Autism