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Noise

Daniel Kahneman, Olivier Sibony, Cass R. Sunstein

464 Pages
2021

Noise

Hachette UK

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Noise - Summary

Noise: A Flaw in Human Judgment explores the hidden threat of noise in human judgment โ€“ the unpredictable variability that leads to inconsistent and often flawed decision-making. Written by Daniel Kahneman, Olivier Sibony, and Cass R. Sunstein, the book examines why professionals with access to the same information often reach different conclusions and provides strategies for improving decision-making processes.

Key Ideas

1

The Pervasiveness of Noise

Noise is random variability in judgments that should be identical, distinct from bias. It affects various fields from medicine to finance, with seasoned professionals showing concerning levels of inconsistency in their judgments, leading to significant real-world impacts.

2

Identifying and Measuring Noise

The book provides a framework for identifying and measuring noise, distinguishing between Level Noise (different average judgments across individuals) and Pattern Noise (different judgments of the same case by the same person at different times).

3

Combating Noise

The authors present practical strategies for reducing noise, including decision hygiene, algorithms, structured interviews, and aggregating independent opinions, while promoting a culture of open feedback and continuous improvement.

FAQ's

No. While the book delves into various professional fields, the concepts of noise and its impact on judgment are universally applicable. Anyone who makes decisions, whether in their personal or professional life, can benefit from understanding and mitigating noise.

While "Noise" builds upon some concepts explored in "Thinking, Fast and Slow," it stands alone as a unique exploration of a different, often overlooked, flaw in human judgment.

The authors present complex ideas in a clear and engaging manner, using real-world examples and case studies to illustrate their points. While some sections may be more technical, the book is accessible and insightful for a wide readership.

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