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 alo

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.