'Freakonomics: A Rogue Economist Explores the Hidden Side of Everything' is a 2005 non-fiction book by economist Steven D. Levitt and journalist Stephen J. Dubner. The book applies economic principles to a wide range of real-world subjects not typically associated with economics, such as crime rates, parenting strategies, and cheating. Its central theme is that incentives are a fundamental driver of human behavior and that data analysis can reveal surprising truths that contradict conventional wisdom.