For all those interested in NKS and computational physics, there is a great essay by Stephen Wolfram over at the FQXi forum, titled: “What is Ultimately Possible in Physics?” It was entered in the 2009 FQXi essay contest with the same name.
Voting is still open (until November 6). Please check out the contest, read Stephen Wolfram’s essay, place a vote, and leave a comment!
Here is a direct link to Stephen Wolfram’s essay: “What is Ultimately Possible in Physics?”
This essay uses insights from studying the computational universe to explore questions about possibility and impossibility in the physical universe and in physical theories. It explores the ultimate limits of technology and of human experience, and their relation to the features and consequences of ultimate theories of physics.