Noise: A flaw in human judgement by Daniel Kahneman, Olivier Sibony, and Cass Sunstein tells a damning story about how much variability there is in the assessments we make as experts in our field. They bring in examples ranging all around professional judgements - medicine, legal cases, laboratory assessments, hiring, forecasting, grading term papers, etc. etc. This noise has serious implications in all these arenas - false positive and false negatives cost time, money and lives. And while people often think that these variations might “balance out” the costs certainly do not.