Caveat Emptor

 
The difference between sex and gender is sometimes described by saying that the former is biological, while the latter is cultural.

One must careful about accepting this too uncritically. In particular one cannot assert, as traditional feminism used to, that, with appropriate social engineering, gender could disappear altogether.

Just as gender identity has a biological substrate, so may the cultural processes that have developed. From time immemorial, males and females have had very different needs and agendas.