The year is 12206 N, which corresponds to 2206 AD. Dr. Roland Davidson and his family live in a world in which disease has been eliminated. Robots provide for 99 percent of all human needs. From birth to a mandated death at the age of 150, a person has little work to do. Sogan, the Supreme Commander of Earth, declared, "The world is perfect." This should be Nirvana. But the listless existence of minimal labor is accompanied by rigid control, and people are tracked by means of a chip implanted at birth. Dr. Davidson has come upon a revolutionary hypothesis. He theorizes he can disassemble an...