Noise: A Flaw in Human Judgment By: Daniel Kahneman, Olivier Sibony, and Cass R. Sunstein Reviewed by Geoffrey W. Sutton We are constantly exposed to opinions. Some of those opinions are judgments. And some of those judgments affect our opportunities to work, obtain healthcare, receive fair treatment by government entities, and earn fair evaluations in school. Some people are paid to make informed judgments. Unfortunately, some judgments are noisy—they vary. Noise is about the differences in judgments that affect our lives. When the authors provide examples of variation in judgments, they are writing about variability in a statistical sense. As a retired professor who taught research and statistics to undergraduate and graduate students, I’m not sure the authors were entirely clear—at least not clear enough for readers who are either new to the concept or haven’t drawn on their statistics knowledge for some years. In any event, I think the book deserves a look be
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