If and when a body of medical and scientific experts can establish the "limits" of testosterone that "separate " male from female, any athlete who chooses to compete in a contest that suits their gender identity and who exceeds acceptable levels could compete, have their standing marked by an asterisk, and any participants below the limits place without asterisks. Then everyone knows where they placed, and no one has to compete where they do not feel comfortable. So first place asterisk category wins asterisk category, and first place no asterisk is first place no asterisk. The "girls" compete against other "girls", and those above the "limit' compete against others above the limit. If we are all running some race, and a motorcyclist passes all of us, the motorcyclist clearly crosses the finish line first, and the first place runner is clearly the winner too. No one would be duped! Those racing without a motorcycle know who won and who didn't! It is the determination of what constitutes undue advantage in a competitive situation that must be settled. The rest should follow in a straightforward way. No one should feel "left out" or disadvantaged.