Greg Egan is fantastic; I particularly liked his short stories.<p>One should note that he says people shouldn&#x27;t expect to just sit down and read a book, but should use a pencil and paper to help figure things out. Though that doesn&#x27;t apply so much to Permutation City, it does to other stuff like Orthogonal and Incandescence. (From what I&#x27;ve heard Schild&#x27;s Ladder, too).