Whether it's in a cockpit at takeoff or the planning of an offensive war, a romantic relationship or a dispute at the office, there are many opportunities to lie and self-deceive--but deceit and self-deception carry the costs of being alienated from reality and can lead to disaster. So why does deception play such a prominent role in our everyday lives? In short, why do we deceive?

In his bold new work, prominent biological theorist Robert Trivers unflinchingly argues that self-deception evolved in the service of deceit--the better to fool others. We do it for biological reasons--in order to help us survive and procreate. From viruses mimicking host behavior to humans misremembering (sometimes intentionally) the details of a quarrel, science has proven that the deceptive one can always outwit the masses. But we undertake this deception at our own peril.

Trivers has written an ambitious investigation into the evolutionary logic of lying and the costs of leaving it unchecked.

Reviews

"Kirkus Reviews (starred)"
"Self-deception has long been a dark, opaque side of our behavior, but the author brings a bright flashlight to his investigation of why we alter information to reach a falsehood.... Trivers examines our biases and rationalizations, denials and projections, misrepresentation and manipulations, and his writing is comfortable and suasive, resulting from his familiarity and command of the subject's broad application and investigative history.... A gripping inquiry. Trivers is informal but highly knowledgeable, provocative, brightly humorous and inviting.""Library Journal""Looking at self-deception in broader areas like war, religion, false historical narratives, and even plane crashes, Trivers presents a convincing argument for why this type of dishonesty is as harmful to the individual as it is to society as a whole.... This provocative book examines an often unexamined subject, but one with which all readers are familiar. Recommended for professional social scientists as well as readers of popular science." Richard Wrangham, Professor of Biological Anthropology, Harvard University, and author of "Catching Fire" "How Cooking Made Us Human""The problem of why natural selection favors self-deception is as poorly understood as it is riveting. Robert Trivers uses examples from insects to international relations to guide us to the fundamental logic. The result is a startlingly original and important book that should start a global conversation on a topic of both scholarly and personal interest." Richard Dawkins, emeritus Professor of the Public Understanding of Science, University of Oxford, and author of "The Greatest Show on Earth""This is a remarkable book, by a uniquely brilliant scientist. Robert Trivers has a track record of producing highly original ideas, which have gone on to stimulate much research. His Darwinian theory of self-deception is arguably his most provocative and interesting idea so far. The book is enlivened by Triver