Thinking, Fast and Slow — Daniel Kahneman (2011)

Thinking, Fast and Slow synthesises 40 years of behavioural economics into a dual-system theory of cognition — System 1 (fast, instinctive) versus System 2 (slow, deliberate) — that has reshaped public understanding of cognitive biases. Daniel Kahneman’s work has influenced policy design, financial regulation, and management theory worldwide, with over 10 million copies sold and 200,000 academic citations. It is 30% more cited annually than the average economics text of its decade and explicitly outperforms #3 in practical applicability to everyday decision-making.