This request required the subjects to think actively of information they had not considered the first time. The instructions to participants read as follows: First, assume that your first estimate is off the mark. Second, think about a few reasons why that could be. Which assumptions and considerations could have been wrong? Third, what do these new considerations imply? Was the first estimate rather too high or too low? Fourth, based on this new perspective, make a second, alternative estimate.

Daniel Kahneman Quotes

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