There are major biological differences between men and women. Looks at the stats for IQs on women - generally a tight grouping on the average. IQs for men are all over the damn place - more geniuses, more idiots. Different parts of our brains light up when we're doing the same things; more accurately, women tend to activate more of their brains when doing the same things as men. They're better lateral thinkers on average. Maybe it's the myopia of male focus (again, on average) that makes men more into RLs.
There are definite, scientifically verified, major differences between the ways our brains work. Trivializing these differences brings us further away from understanding one another; it not only intentionally distorts the debate, but it obscures information that would make it easier to communicate across the gender divide. After all, the operating assumption is that all of this study and attempt at dialog creates a better understanding, more equality, thus a better world, no? So, my fellow progressives, why equivocate about this? Are we afraid that acknowledging these facts will weaken our position? If so, if we're being that tactical and disingenuous, why discuss anything at all? Let's just lobby our groups and indoctrinate first-year sociology students like we always do.
Of course, it is also patently ridiculous to deny that there are significant cultural barriers between women and achievement in areas where they have been traditionally excluded. That is an argument right out of the 40s-50s and I am frankly surprised to see it from someone who knows how to use the internet. Read the newspaper, or better yet, talk to some guys at a bar to get a flavor for the hidden underbelly of misogyny that still pervades a lot of the civilized world.
By the same token, I've seen absolutely no tit-for-tat factor when it comes to spheres where women dominate: women are CRUSHING men in school. Women are taking over the field of medicine. As far as that goes, the only concern I hear from the progressive camp is that the trend is not pervasive enough, i.e. "Why aren't there more female programmers?"
I guess both sides are playing their cards pretty close to their chest. Love is a Battlefield.