I care essentially none about sports. But I do care about fair play. Whether Semenya is biologically male or female I am in no position to say. Of course, I have suspicions.
Semenya calls the gender debate a “joke.” Male, female, androgynous, or extraterrestrial, it is immature and unsportsmanlike of her to take this position. The only possible joke I see here, and it’s more trick, well, cheat really, than joke, is that someone not biologically female be allowed to compete at the world level in female events.
If our definition of female was not good enough to keep one from slipping through, I’m sure we can fix it (and will have to keep fixing it) and do sufficient testing of athletes to prevent this in the future.
I’m not opposed to allowing people who don’t biologically fit well into the confines of a single sex classification, i.e., male or female, to have their own “other” classification for sporting events, in which they can compete against other “others.” And in the future there may be more “others” than not. But they shouldn’t be allowed to use their abnormal sex biology to the detriment of other competitors under the two-sex system as it is structured now.