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Steven Levitt: Super Freakonomics (Hardcover, 2009, William Morrow)

The New York Times bestselling Freakonomics was a worldwide sensation, selling more than four million …

Review of 'Superfreakonomics' on 'Goodreads'

Not quite as interesting or as compelling as their first book, but worth the time. There seems to be a fair amount of overlapping material with parts of "The Rational Optimist."