First of all I am a scientist.
Semenya has faulty androgen receptors, which means she cannot naturally regulate her testosterone levels and is likely not getting any additional advantage from the elevated levels. What puzzles me is you are so focussed on one type of genetic abnormality but disregard the others that make elite athletes what they are. I've never argued that men don't have a physical advantage, nor have I argued for the scrapping of gender segregation in physical sports. My point is simply that if we start discriminating against people with highly favourable genetics we are doing all a disservice.
