Feminism implies activism, and is thus full of stupidities. You can't be honest about what's known and what isn't, or about what the uncertainties are, or all the other things you have to do to truly think about something philosophically, when you have a pressing political stake. You can't be scientific about the results of a study when you are a public figure in a political debate like that...if a study was inconclusive regarding whether men were smarter than women, any well known feminist who accurately described the study would have their words trumpeted all over by their opponents, who would have no such scruples.