Quote Originally Posted by NeoCybercoin View Post
Exponential growth. He fights something strong, he adapts and becomes stronger.
That would be an enormous jump though...

Also, for anyone that hasn`t yet, I suggest reading the manga (it`s behind the anime so no spoilers). Some events don`t happen exactly as they did in the anime and I think explain better some things (such as the Goku Vs. Hit) fight.