In their work, the economist and psychologist Daniel Kahneman, the Professor of Strategy in Olivier Sibony and the lawyer Cass Suntein are interested in “noise”, the variation that each individual brings to his judgment according to his character .
by
Book. The error is Daniel Kahneman’s quest. It is the only psychologist who has ever received the Nobel of Economics in 2002 for the applications of his research in behavioral matters in finance. In its bestseller, system1 system2, the two speeds of thought (Flammarion, 2012), it attached to dissect one of the main faults of our judgment: cognitive bias. Because we are too optimistic, we are looking for what confirms our opinion or are we afraid of losing, our vision of things is biased. We then tilt systematically in one direction.
This time Daniel Kahneman tackles more difficult: the error that leaves in all directions and that he calls “noise”. To get rid of it with Olivier Sibony, Professor at HEC Paris, and Cass R. Sunstein, Professor of Right to Harvard, another behavioral science specialist. The noise is the variation that each individual brings to his judgment according to his character (severe, clément) and his situation (happy, sad, tired, angry), who will influence his decision, widely as much as bias. With dramatic consequences in areas such as justice, forecasts, recruitment, police, patents, etc. Any areas that the book reviews before proposing a “hygiene” of thought that comes to return to Cartesian reasoning, close to that of a machine. The better machine judges that man? It is the immense debate that this exciting and disturbing book.
