Discusses how the concept of common sense is inadequate in an increasingly complex world and draws on multiple disciplines to offer insight into the sources of such topics as popularity, economics, and self-deception.

The myth of common sense -- Thinking about thinking -- The wisdom (and madness) of crowds -- Special people -- History, the fickle teacher -- The dream of prediction -- The best laid plans -- The measure of all things -- Fairness and justice -- The proper study of mankind.