After decades of research, Robert Trivers has at last provided the missing theory to answer these questions. What emerges is a picture of deceit and self-deception as, at root, different sides of the same coin. We deceive ourselves the better to deceive others, and thereby reap the advantages. From space and aviation disasters to warfare, politics and religion, and the anxieties of our everyday social lives, Deceit and Self-Deception explains what really underlies a whole host of human problems. But can we correct our own biases? Are we doomed to indulge in fantasies, inflate our egos, and show off? Is it even a good idea to battle self-deception? With his characteristically wry and self-effacing wit, Trivers reveals how he finds self-deception everywhere in his own life, and shows us that while we may not always avoid it, we can now at least hope to understand it.