The astonishing performances of Jamaican sprinter Usain Bolt broke the consciousness of almost the entire population of the world this week. Only the Olympics and perhaps the football World Cup offer such global exposure [alas the heavyweight championship has long lost this broad appeal], and though I doubt he could run backwards as fast as his contemporaries in the Olympic boxing ring, the question of his place amongst the greats of the track is unquestionable. The clock doesn’t lie. Bolt is faster than anyone who ever lived. Such cross generation comparison in boxing, provides no such clarity.