Noise by Daniel Kahneman, Olivier Sibony & Cass R. Sunstein

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

We like to think we make decisions based on good reasoning – and that our doctors, judges, politicians, economic forecasters and employers do too. In this groundbreaking book, three world-leading behavioural scientists come together to assess the last great fault in our collective decision-making: noise.

We all make bad judgements more than we think. Noise shows us what we can do to make better ones.

Here are 5 key lessons from the book Noise: A Flaw in Human Judgment by Daniel Kahneman:

* Noise is different from bias: Noise refers to the variability in judgments that should ideally be consistent. While biases are systematic errors in judgment, noise is the random scatter that leads to inconsistent decisions, even when the same information is being evaluated.

* Noise harms decision-making: Noise in decision-making, especially in industries like law, medicine, and business, can cause significant problems by introducing unpredictable variations in outcomes. By acknowledging the presence of noise, organizations can aim to reduce it for more consistent and fair judgments.

* Judgments can be improved with structured frameworks: Kahneman suggests using structured decision-making processes, such as algorithms or checklists, to reduce the effect of noise. This ensures that decision-makers follow a systematic approach rather than relying on inconsistent intuitions.

* People are unaware of their noise: Most people are unaware of how noise influences their judgments. Kahneman emphasizes that awareness of noise can lead to interventions that minimize its effect, ultimately improving decision-making accuracy and fairness.

* Reducing noise requires effort, but it is worth it: The book concludes that while eliminating noise completely may be difficult, making a concerted effort to reduce it can significantly improve outcomes. Organizations and individuals who prioritize reducing noise can achieve better, more consistent decisions.

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