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"Metamagical Themas" by Hofstadter is a great follow up. Also, for intellectially expanding + can be read in huge chunks: try "Permutation City" and other Greg
by D_Alex 16y ago
"Metamagical Themas" by Hofstadter is a great follow up. Also, for intellectially expanding + can be read in huge chunks: try "Permutation City" and other Greg Egan sci-fi.