In Jon Pretty's case, if his account is true, it wasn't investigated. It was simply decided in a court of public opinion, quite possibly because of the historic

In Jon Pretty's case, if his account is true, it wasn't investigated. It was simply decided in a court of public opinion, quite possibly because of the historical metric you brought up. The only way you can ensure that it stops happening is strict segregation by sex, but I don't think that's what you'd want.