Distaff side here. I loved playing with guns when I was a kid. My parents though thought they weren't suitable for girls, so they were quickly banned. So I made my own bow and arrow set, needless to say, that didn't last long in the suburbs. Then I finally got smart, and they never found about the slingshot.

And I was enlightened.

They could be; its just difficult to conclude that based on observing that they play with weapons, since obviously they must be taught what weapons are, and along with that who (men, women) should use them. Pinker makes little effort to account for such problems and often makes the "widely observed == genetic" fallacy.