>>3anyways even with infinite computational power you'll never be able to simulate the visuals of the physical world exactly like the physical world and people will still be able to tell a difference.
You can use statistical algorithms (i.e. markov model) and scan real-world models. People won't be able to tell difference as long as data is pixel perfect (see
http://en.wikipedia.org/wiki/Nyquist%E2%80%93Shannon_sampling_theorem)For example,
http://www.youtube.com/watch?v=jU3R0oQhkGE - you wont be able to tell the difference from photo. Although animating this will be painful, because all tissues have to be correctly simulated.