Thinking, Fast and Slow

Daniel Kahneman presents decades of research into one gripping framework: our minds operate on two levels. System 1 is automatic, fast, and prone to cognitive biases. System 2 is deliberate, slow, and capable of complex reasoning—but also lazy, often delegating to System 1.

The book maps the landscape of cognitive biases: anchoring (relying too heavily on the first number you hear), the availability heuristic (judging probability by how easily examples come to mind), the planning fallacy (underestimating how long tasks take), and loss aversion (losses hurt about twice as much as gains feel good).

Kahneman's most provocative finding may be the distinction between the experiencing self and the remembering self. We don't evaluate experiences as they happen—we evaluate them as we remember them. The peak-end rule means a good ending can redeem a poor experience. This insight reshapes how we think about wellbeing, decision-making, and what it means to live well.

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