Permutation City, written by Greg Egan, is a mind-bending science fiction novel that explores the concept of mind-transfer in a world where digital consciousness can be created and simulated. The story follows Paul Durham, a software engineer who uploads his consciousness into a virtual reality called the Autoverse. As Paul explores the infinite possibilities of the Autoverse, he grapples with questions of identity, existence, and the nature of reality. Permutation City is a thought-provoking and intellectually stimulating read for fans of mind-transfer adventures and philosophical science fiction.