I'm beginning to think what the future will offer is three classes of sports and rest rooms: male, female, and "open". Male sports and facilities will be for

I'm beginning to think what the future will offer is three classes of sports and rest rooms: male, female, and "open". Male sports and facilities will be for males only (per whatever agreed-upon tests), female sports and facilities will be for females only (per whatever agreed-upon tests), and the "other" sports and facilities will be open to anyone not qualifying for the first two categories (but will end up dominated by testosterone anyways). It might not be a perfect solution, but at least competitors in the non-open categories would be certain about who they're up against.