> Assumed that we were talking about biological men, who identify as female in gender, competing in women's sport. If we're talking about biologically non-binar

> Assumed that we were talking about biological men, who identify as female in gender, competing in women's sport. If we're talking about biologically non-binary individuals, it is indeed a difficult conversation about how to be equitable with them and still respect everyone's sense of fair play. Re-read my above edit about hyperandrogenous women. These are biological women who simply have a medical condition that makes their body produce more hormones than normal, and major sports organizations like the IOC have banned them. My point is that insisting we draw the lines across biological sex results in special cases like that, because the actual group of people we are trying to exclude is those with a certain biological advantage, and that group does not match up exactly with "biological men". > And if a person who isn't clearly biologically-female does dominate in a woman's division, the natural response will be to say that they have an unfair advantage and don't really belong; it's not obvious how to avoid that catch-22. Here's my answer: stop pretending they are "(biological) women's sports" and actually define the rules in relation to what you are trying to prevent (ex: set a max testosterone level). This instantly closes all loopholes because it directly addresses the problem rather than attempts to indirectly address it via the imprecise measurement of bio sex. At least at the top level, this entirely solves the problem in my opinion. A bigger problem I don't have an immediate solution for is lower level of competition - it is obviously unrealistic to expect someone to get a testosterone test to play intermural basketball at their local high school.