Leave aside the minor fact that embryos differentiate into boys and girls in important ways that are irreversible at any time later in life.

This table, which compares some swimming times of American high school boys with those of the world’s adult women, makes plain the utter insanity of letting post-pubescent biological males compete in biological girls’ sports, purely from a simple competitiveness standpoint.

It’s important to note that US high school boys still swim in yards, while the world’s adult women swim in meters. The original table was pulled from Powerline because many commenters emphasized that distance discrepancy.

Here, though, are some of the women’s times converted for distances in yards:

50 meters Freestyle vs 54.7 yards (50m): women’s world record time shortened to 50 yards swum: 21.64 seconds, a nearly 12% difference favoring the boys

100 meters Back vs 109.4 yards: women’s world record time shortened to 100 yards: 52.51 seconds, a nearly 15% difference favoring the boys

400 meters Free Relay vs 437.4 yards: women’s world record time shortened to 400 yards: 3.18 minutes, a nearly 10% difference favoring the boys

As is plain, shortening the women’s swimming distances to match the high school boys’ distances (and assuming the 9%-ish shorter distance would shorten the women’s times only linearly), US high school boys still swim much faster than the adult women of the world.

h/t Powerline