[VirusNewbie]

I don't quite agree there. Carrol clearly has a deep understanding of physics while Lex doesn't and was able to probe in deeper ways on that front, but the opposite is true when it comes to an understanding of computation.

Lex was very interested in the universal substrate rewrite analogy to a turing machine and all of the implications of that, while Sean kind of glossed over that.

Carrol seems to be the overall more educated of the two, but at the same time has a more sophomoric understanding of the theory of computation.

Come to think of it, overall it seems to be a weak spot amongst well known physicists, Wolfram excepted.