Caster Semenya controversy 2016 Rio Olympics | SI.com: "Harper, who testified in the Chand hearing, believes that a ceiling is necessary. "Who are you trying to be fair to?" she says. "Are you trying to be fair to billions of potential female athletes? Or are you trying to be fair to a very small minority of people who live a truly marginalized existence? It's difficult. In my opinion, the least unfair solution is that if you want to be a female athlete, the key is testosterone. If your testosterone is below certain levels, we're going to let you compete. As a female."
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