This book discusses the controversial issue of whether animals are designed according to the same rules that engineers use in building machines, namely that materials and energy are used economically while attempting to achieve a high level of performance. There is considerable scientific controversy surrounding this question because, although there is much evidence suggesting that animals are indeed well designed, evolutionary biology tells us that animals are not "engineered" but result from evolution by natural selection. In this volume these highly controversial questions are debated by...

Originally published in 1982, this book was designed to supplement Knut Schmidt-Nielsen's Animal Physiology.