The Roots of Reason : Philosophical Essays on Rationality, Evolution, and Probability

Presenting a different view of human reason, this book portrays it as a normal part of the natural world. Drawing on the empirical sciences to illuminate its workings, it discusses both theoretical and practical rationality, and shows how evolutionary theory, decision theory, and quantum mechanics offer fresh approaches to the problems.

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 offers a fresh approach to some long-standing problems. Papineau rejects the contemporary orthodoxy that genuine thought hinges on some species of non-natural normativity. He explores the evolutionary histories of theoretical and practical rationality, indicating ways in which capacities underlying human reasoning have been selected for their biological advantages. He then looks at the connection between decision and probability, explaining how good decisions need to be informed by causal as well as probabilistic facts. Finally he defends the radical view that a satisfactory understanding of decision-making is only possible within a specific interpretation of quantum mechanics. By placing the subject in its scientific context, Papineau shows how human rationality plays an explicable role in the functioning of the natural world.