The theory of digital physics is that there exists a program for a universal computer which computes the dynamic evolution of our world.For example, the computer could be a huge cellular automaton, as suggested by Zuse (1967), or a universal Turing machine, as suggested by Schmidhuber (1997), who pointed out that there is a very short program that computes all possible computable universes in an asymptotically optimal way.
Download ebooks on http://www.frenchtheory.com/
See that post with different algorithms in metabole
See the journal French Metablog with today different posts
