Phew this is nothing short of incredible: 100m in 9.58sec. I recall when Carl Lewis was breaking records we thought this must be the limit (it was the same event in which Ben Johnson tried with steroids and could only work out somewhere around 9.70 odd seconds). Usian bolt like Phelps seems unreal. In the Olympics when he did the jig before the finish line it was criticized by the officials but people around the world enjoyed it. And that is precisely what sports is all about, it must be fun. Great sportsperson tend to enjoy their performance. Athletics is an exact sport, it is not only accessible to everyone the advantage of technology is also quite limited making it a level playing field. There is nobody in this world who has not run a race!!. The reason why these achievements are stupendous.