review:
Permutation City is the book about multiverses, cyberspaces, and post-AI consciousness - all rolled into a physics and mathematical construct. The sheer scope of imagination here is immense - and that's what makes this a pleasure to read. I like hard sci-fi that also manages to push the boundaries of several things at once - and Greg Egan is an interesting person to read about this. I'm compelled to buy all his books and read through them.,