Thinking, Fast and Slow is a book by Daniel Kahneman, published in 2011. Kahneman, a Nobel laureate in economics, explores the two systems of thinking that drive our decisions: the fast, intuitive system and the slow, deliberate system. He delves into the cognitive biases and heuristics that affect our judgment and decision-making processes. The book offers valuable insights into human psychology and the ways in which our minds often deviate from rationality. It has had a significant impact on fields such as economics, psychology, and behavioral science.