Andrea James has an outstanding essay on the gender binary and sports over at Boing Boing:

Unless you’ve been affected by it, understanding how social realities like a sex binary get reified and justified through technology can be hard to see. It all gets framed as “natural” and “normal,” while anything that disrupts social [...]

Dvorsky points out the slippery slope in their logic:

While this clearly solves a problem for the IOC, the decision to “treat” athletes with genetic abnormalities will likely have far reaching repercussions for those with other types of genetic endowments. The IOC is in danger of opening a pandora’s box in which virtually every [...]