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Part personal narrative, part documentary, part travelogue, and part chapbook, this compilation of Kalman's "New York Times" columns form an intricately interconnected world view and an idiosyncratic inner monologue.

The Principles of Uncertainty 2009, Penguin Books, New York, NY

ISBN-13: 9780143116462

Trade paperback

The Principles of Uncertainty 2007, Penguin Press, New York, NY

ISBN-13: 9781594201349