PS—I hope I’m not breaking any rules by commenting further.  But your statement,  ‘We aren't talking about biologically determined roles but social constructed exclusion based solely on gender’ intrigued me.  I think you may draw too firm a line between biology and culture.  You see, culture is part of our biology, because we are quintessentially social animals.  As I said to Nora—politely, I hope—there’s not a vertebrate I can think of that doesn’t have a sexual division of labour.  Often the division is apparently arbitrary and not based on size or strength.  I don’t think humans are any different.  The cultural constructs that emerge are conditioned by and large by our biology.  That’s why I think the secular modernist concept of ‘gender equality’ is (a) absurd, (b) bound to fail, and (c) the root cause of much of modern neurosis (including gender confusion).