My "understanding of the etiology of this condition" has nothing to do with whether men should be competing with women in sports. They shouldn't. End of story. It's unfair and dangerous. It is anything but "brave" for them to do it. In fact, it's the exact opposite. It is cowardice. No man with an ounce of self respect or the remotest concept of sportsmanship would want anything to do with it. I don't give a damn if your uncle raped you as child, or if you were born with a woman's brainwaves or whatever else caused you to be so damaged you think you're a girl. You're not, and all 37 trillion Y chromosomes in your body agree with me.