"The argument is as mentally thrilling as shooting Niagara in a dishpan, plunging the reader into a dizzying no-man's land between physics and metaphysics."--Curt Suplee, The Washington Post"It's great fun to see the implications of this fantastic idea laid out by so original a thinker.... Smolin makes some of the strongest arguments I've seen that understanding the universe will require a serious search for some kind of laws of complexity."--George Johnson, The New York Times BookReview