Kahneman and Klein: when expert intuition works

Two researchers had spent their careers on opposite sides of a fight. One had spent years showing that expert intuition is powerful and real, the snap judgment of a firefighter or a nurse who just knows. The other had spent years showing that expert intuition is often an illusion, that supposed experts frequently do no better than chance. Instead of continuing to argue, they did something rare: they wrote a paper together to work out who was right. The answer was that they both were, under different conditions. Intuition becomes trustworthy only when two things are true. The person works in an environment that gives regular, quick feedback, and they have made many similar decisions over time. Firefighters and nurses have both. Stock pickers and long-range forecasters have neither, and their confident intuitions are mostly noise.

Expert gut feeling is real in some fields and worthless in others, and you can tell which by asking two questions about the expert's world. Does it give fast, clear feedback, and do they make the same kind of call over and over? If yes, trust the intuition. If no, the confidence is real but the skill is not, no matter how senior the person. This is the sharp test for your own hunches too, especially in hiring, where feedback is slow and every candidate is different, which is exactly the environment where intuition fails and structure wins.

Thinking, Fast and Slow

Daniel Kahneman, 2011

Where the fast, intuitive mind can be trusted, and where it confidently leads you wrong.