[lost_name]

There was a very good documentary on the NatGeo channel here in the US just this week that did an excellent job of explaining all of it to me.

http://channel.nationalgeographic.com/gender-revolution-a-jo...

One thing I found especially interesting is toward the end, where Katie Couric sits down with Renée Richards and Hari Nef. It was interesting seeing Hari talk with Renée and realize they disagree on the binary topic.