Another gem by Stewart with delightful examples, a breathtaking perspective, and thoughtful considerations on where we have been, where we are, and where we may be going. This book should be read by anyone involved in the teaching or practice of mathematics and is a handy companion to James D. Bailey's equally thoughtful Mapematics [sic] books, which deal with infinitesimals: non-computational solution generators such as neural nets, computer learning by genetic algorithm recombination, and the solution of non-biological problems using protein folding techniques. Bailey's should also be read by anyone interested in the teaching of mathematics or in the design of mathematical curricula at any level from elementary school to graduate school.