TheSunday Timesbestseller

A monumental, gripping book OutstandingSunday Times

Wherever there is human judgement, there is noise.

Noisemay be the most important book I’ve read in more than a decade. A genuinely new idea soexceedingly important you will immediately put it into practice. A masterpiece
Angela Duckworth, author ofGrit

An absolutely brilliant investigation of a massive societal problem that has been hiding in plain sight
Steven Levitt, co-author ofFreakonomics

From the world-leaders in strategic thinking and the multi-million copy bestselling authors ofThinking Fast and SlowandNudge, the next big book to change the way you think.

Imagine that two doctors in the same city give different diagnoses to identical patients or that two judges in the same court give different sentences to people who have committed matching crimes. Now imagine that the same doctor and the same judge make different decisions depending on whether it is morning or afternoon, or Monday rather than Wednesday, or they havent yet had lunch. These are examples of noise: variability in judgements that should be identical.