This is a really challenging book that lays out the reality and febrile nature of decision-making and all its foibles. It acknowledges the self-satisfied certitude of the elites engaged in this level of social agency as they acquire experience of agreeing with themselves (most of the time) and to disregard the vagaries and variations as the inability of others to make decisions properly. Whilst accepting its basic premise (that most decision-making is arbitrary and not sufficiently focussed on the right questions to be terribly good) and noting the solutions offered (sorting out ranking, aggregating judgements and attending to good decision hygiene that keeps everyone focussed), I can't help but think how unacceptable to the vanity-strewn workplace of perfect decisions whose shortcomings are justified away by the poor performance of others rather than the stupidity of the process most of the reforms or systems presented would be. The very idea that an algorithm, properly designed and implemented, could make a better judgement would be rejected on the basis that every decision is as special as the people who are making it. Having had to make a lot of these sorts of decisions in my career, I would have welcomed this advice, but the prudent manager would be wise to keep what they are doing to themselves if they seek to implement any of this. As a rebuke to the poor quality of judgements by people who believe they are making great ones, this will be vindicated in the end by people brave enough to withstand the attacks they will suffer as a consequence for doing anything as radical yet justifiable as the approaches set out in this book given how rubbish most of our decisions turn out to be. Treating bias and noise as equally damaging is an excellent analysis: when I think of colleagues who make poor judgements it is precisely because they wish only for the latitude that noise gives them to exercise their questionable decision-making powers in a fog. A couple of good insights as well into institutional cultures that fear dissent or disagreement as irreparable, and the need for all of us to be a bit more humble when it comes to exercising our judgement. Worthy of consideration for anyone who makes consequential judgements at work.