Playing along with Guyland may be the only way an individual woman might believe she has a chance at a social life or a relationship. Sometimes it gets pretty crazy, like a sorority requiring that all the pledges sleep with the members of the "brother" fraternity.

The good news is that women's roles have changed so dramatically over the past three decades that women now expect to have careers, balance work and family, express their individual autonomy.

White men in Europe and the US are the beneficiaries of the single greatest affirmative action program in the history of the world; it is called the history of the world.

Guys constantly talk about pornography in two ways: as revenge and as reassurance. When you live in a world in which beautiful, sexy women are all around you, in the same classes, on the same athletic field, competing for the same jobs, then the pornographic world - the world in which women thrill to male sexual desire - reassures men that although they may feel "one down," they're still entitled to women's bodies.

We have the data to prove to men that gender equality is not a zero-sum game, but a win-win.

My colleagues and I have done a survey of 13,000 students on more than 17 campuses, and we found that while sex in college has always been a bit more casual, "hooking up" has pretty much replaced other traditional forms of dating.

I think there is another choice for women; it involves challenging Guyland and supporting each other.