> Read any good books lately?
The Fabric of Reality: The Science of Parallel Universes
1997 Penguin books
It says on the cover: "A leading scientist interweaves evolution, theoretical physics, and computer science to offer a new understanding of reality." Most books published these days say that on the cover.
It delivers. One of the most extropian books in existence, it seems to me.
Limits of classical computation.
The many worlds interpretation of quantum mechanics. Time travel as shifting to a slightly alternate universe. Quantum computation to get beyond the limits of classical computation:
"To those who still cling to a single-universe world-view, I issue this challenge: explain how Shor's Algorithm works. .... When Shor's Algorithm has factorized a number, using 10^500 or so times the computational resources that can be seen to be present, where was the number factorized? There are only about 10^80 atoms in the entire visible universe, an utterly miniscule number compared with 10^500. So if the visible universe were the extent of physical reality, physical reality would not even remotely contain the resources required to factorize such a large number. ..." p 217
[ I note in passing that the aforementioned Shor just got a MacArthur grant, mostly for coming up with Shor's Algorithm...]
This got me interested in quantum computation. There are numerous websites on it; I just got this book, I don't know if it's great yet.:
Explorations in Quantum Computing
Colin P. Williams, Scott H. Clearwater
1998, Springer. with cdrom.