Thinking, Fast and Slow

Kahneman distills a career built with Amos Tversky into a single organizing structure — System 1, the fast, intuitive, error-prone mode of thought, and System 2, the slow, effortful mode that rarely gets deployed when it should. The book's most durable contribution isn't any one bias (anchoring, availability, loss aversion) but the demonstration, through dozens of small experiments, that expertise and intelligence don't inoculate anyone against these errors — Kahneman includes his own susceptibility to them. The later sections on the "experiencing self" versus the "remembering self," and how badly the two disagree about what counted as a good vacation or a good life, are less quoted but arguably the more unsettling material. It's dense enough that most readers absorb it in pieces rather than straight through.