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Thinking, Fast and Slow
Thinking, Fast and Slow is a wide-ranging account of how people form judgments, estimate probabilities, make choices under uncertainty, remember experiences, and evaluate their lives. Kahneman organizes much of this material around two personified modes of cognition. System 1 represents rapid, automatic, associative, and usually effortless processing; System 2 represents more deliberate, attention-demanding reasoning. These are explanatory characters rather than literal anatomical divisions of the brain. The book’s five-part structure moves from cognitive machinery to practical consequences. Part I introduces the two-system vocabulary and examines attention, mental effort, associative memory, cognitive ease, and the mind’s tendency to construct coherent interpretations from limited evidence. Part II turns to heuristics: useful shortcuts that can also produce predictable errors involving small samples, anchors, availability, stereotypes, base rates, conjunctions, regression to the mean…