I was reading New Scientist this morning. There was an article on how quantum computers could beat computers with super powers at certain types of very complex tasks. I believe the computers with super powers, I am not sure really, were enhanced to perform certain algorithms. This reminded me of a book written by Roger Penrose called The Emperor's New Mind, in which he argued the brain was not like a computer, but used Quantum Gravity effects. He said he was sticking his neck out a bit (since the theory of Quantum Gravity has not been formulated yet, I would think he was sticking his neck out quite a bit). He was certainly persuasive in arguing that the human brain was not like a standard computer. It was a pretty good book, although not an easy read. It took you through the history of Physics and computer science up to the time it was written.