American soccer star Megan Rapinoe is furious that the International Olympic Committee has decided to protect the female category . She called the IOC’s new eligibility standards for women’s Olympic sport “a really horrible rule” that’s “not based in science,” and claimed it had nothing to do with protecting women. That reaction is ironic, given that Rapinoe owes her entire career to the existence of a protected female category. Without sex-segregated sport, there is no women’s soccer as we