In winning the 100m, Bolt significantly slowed down as he approached the finishing line and Norwegian physicist Hans Eriksen has estimated the Jamaican could have run 9.55 seconds if he had finished at full pace.

BBC: Bolt eyes world record domination

There will be some who argue that winning exonerates everything, and that Bolt's personality wouldn't be so intoxicating if he was finishing second.

WSJ: Don't Deny the Joy of Usain Bolt - Jason Gay