A revised and expanded version of a book originally published in the UK as Thinking about Thinking and later reissued in the US as Thinking Straight. Flew (emeritus, philosophy, Reading University, UK) instructs on the varied faults that occur in argument, the power of reason, how to challenge assertions and find evidence, and how to avoid being taken in by half-truths. The revision incorporates references to contemporary controversies as well as an increased number of references to the ideas of classical philosophers and great thinkers. Annotation c. by Book News, Inc., Portland, Or.