A emNew York Timesem bestseller when it appeared in 1989, Roger Penrose's emThe Emperor's New Mindem was universally hailed as a marvelous survey of modern physics as well as a brilliant reflection on the human mind, offering a new perspective on the scientific landscape and a visionary glimpse of the possible future of science. Now, in emShadows of the Mindem, Penrose offers another exhilarating look at modern science as he mounts an even more powerful attack on artificial intelligence. But perhaps more important, in this volume he points the way to a new science, one that may eventually explain the physical basis of the human mind.br Penrose contends that some aspects of the human mind lie beyond computation. This is not a religious argument that the mind is something other than physical nor is it based on the brain's vast complexity the weather is immensely complex, says Penrose, but it is still a computable thing, at least in theory. Instead, he provides powerful arguments to suppo