The blank slate theory is one of the standard assumptions in sociology. From there, it follows that all differences are societal. So, to reply to your renark:

The blank slate theory is one of the standard assumptions in sociology. From there, it follows that all differences are societal. So, to reply to your renark: many people in the social sciences think genders are equal at birth, and many other people think that this alleged equality should be somehow preserved by society. Luckily, data from life sciences seems to contradict this construction.