I have no beef at all with Greg Egan's Permutation City -- it's one of the best SF novels I've ever cozied up with while sipping lemonade on a summer afternoon. If he says miracles of simulation can be accomplished on a six-dimensional "TVC [Turing-Von Neumann-Chiang] Grid", then I can suspend my disbelief 'til next Tuesday, and enjoy the hell out of it.
But -- it's just a story. Like Superman (or Green Lantern).
Put 'em back in your pants, guys. There's nothing similar to grab on to in the real world. Not now. Not in 2010. Maybe not ever.
(Egan's Diaspora is pretty good, too.)
Upgraded without comment. Agree with the substance, agree with the dismissive tone, agree with the specific insinuation that this is largely a matter of boys-with-their-toys, agree that Egan is great sf.