Yes I saw that it was posted before and reposted based on some recent sorting articles because it is so helpful. It is like Asimov's 'The Last Question' and 'How Software Companies Die' and others because it is very interesting.

An interesting static visualization from the other threads is here : http://www.hatfulofhollow.com/posts/code/visualisingsorting/...

I think seeing the timing and sorting in action is so helpful to understand what is going on.