"Thinking, Fast and Slow" is a book written by Daniel Kahneman, a renowned psychologist and Nobel laureate in economics. The book was published in 2011 and explores the two cognitive systems that drive the way we think: the fast, intuitive, and automatic System 1, and the slow, deliberate, and effortful System 2.

Kahneman's central thesis is that our thinking is often biased and flawed, leading us to make irrational decisions and judgments. He explains how System 1, which operates quickly and unconsciously, relies on heuristics and biases that can lead to errors. In contrast, System 2 is more deliberate and analytical but requires effort and often takes a backseat to the automatic responses of System 1.

The book covers a wide range of topics, including judgment, decision-making, overconfidence, framing effects, the impact of emotions, and the role of intuition. Kahneman draws on his extensive research in psychology and behavioral economics to present a wealth of examples and experiments that illustrate the shortcomings of human thinking.

"Thinking, Fast and Slow" has received widespread acclaim for its insights into human cognition and the implications for decision-making in various fields, including economics, business, politics, and everyday life. It has become a popular reference for understanding the biases and fallacies that can influence our thinking and offers practical strategies for mitigating these biases.