Noise: a flaw in human judgement. Daniel Kahneman, Oliver Sibony & Cass Sunstein. 2021.

Imagine that two doctors in the same city give different diagnoses to identical patients - or that two judges give different sentences to people who have committed matching crimes. Now imagine that the same doctor or judge makes different decisions depending on whether it is Monday rather than Wednesday, or they haven’t yet had lunch. These are examples of noise: variability in judgements that should be identical.

In this book, Kahneman, Sibony and Sunstein show how noise produces errors in many fields, including in medicine, law, public health, economic forecasting, forensic science, child protection, creative strategy, performance review and hiring.

We all make bad judgements more than we think. Packed with groundbreaking new ideas, Noise explains what limits our decision-making, and offers a practical route to improving the way we think.