Summary
Kahneman summarizes a lifetime of research with Amos Tversky into the architecture of human judgment. System 1 is fast, intuitive, automatic; System 2 is slow, effortful, analytical. Most of our errors come from System 1 running unchecked — anchoring, availability, framing, loss aversion. The book is dense, sometimes academic, but is the canonical reference for how human cognition actually works versus how we imagine it does.
