A fair test of what, though? Chromosomes, which we cannot conclusively show have any impact on athletic ability? Estrogen? Testosterone? Whoops, there go countless women who are no stronger, faster or otherwise physically advantaged over the average, just because of androgen insensitivity, polycystic ovarian syndrome, precocious menopause, oophorectomy and a whole host of other issues. Why? Because… reasons? No. That doesn’t work as a rationale.

There is no “fair test” because there isn’t anything that can be measured in a laboratory which determines conclusively if we are men or women, and of course some of us are decidedly neither.