The relation between subjective consciousness and the physical brain is widely regarded as the last mystery facing science. Papineau argues that consciousness seems mysterious not because of any hidden essence, but only because we think about it in a special way. He exposes the resulting potential for confusion, and shows that much scientific study of consciousness is misconceived.

David Papineau presents a controversial view of human reason, portraying it as a normal part of the natural world, and drawing on the empirical sciences to illuminate its workings. In these six interconnected essays he discusses both theoretical and practical rationality, and shows how evolutionary theory, decision theory, and quantum mechanics offer fresh approaches to some long-standing problems.