there is much useful knowledge and i would recommend the book, but it has many flaws; what i would call a "tome of semi-inverted wisdom". he does discuss principles of when tech, or complex decisionmaking, is useful or not, relative to human reasoning, and simplified reasoning and perception, respectively. there were a lot of things i was delightfully surprised or enlightened by, like degrees of automation in driving (and the discussion of marketing propaganda); healthcare technology propaganda; diminishing and regressing returns on computational usefulness in complex systems, and fast 'n' frugal trees; common conceptions across time on the premise of "creativity"; second order consequences of regulation, resulting in pseudo-malpractice; error culture sociology; and more. however, he never seems to explicitly clarify general principles on the time and place for human reasoning. he spends a lot of time discussing the value of heuristics for making all kinds of practical decisions, but heuristics are extremely bad at making many kinds of practical decisions. the human mind was crafted in an evolutionary context and is not calibrated for the modern world. the negative consequences of such thinking may be seen on different social tiers; individual level, small collective levels, larger collective levels. for example, the popularity heuristic of popular = good; there are many cases of popular people who are incompetent at their roles!, and this is a major principle at play in politics, a realm that most people recognize as being absurdly flawed. he doesn't discuss how industries and the media zeitgeist are largely constructed to game our heuristical decisionmaking. again, lots of useful knowledge, but if you don't spend a lot of time critically assessing the ideas in the book for yourself, it could do more harm than good. my life has been heavily influenced for the worse by people who only know how to think heuristically, so i feel strongly about this topic.
an interesting topic was intuitive thinking with lack of conscious justification, or gut feelings. he doesn't mention the idea that in collaborative scenarios, people make decisions premised on the ideas of other people. when push comes to shove, maybe you're forced to make gut decisions in crises, but it's not a long term sustainable way to run an organization. critically analyzing ideas is one of the best ways to generate even better ideas. it is a really terrible experience, with many terrible outcomes, to live or work with people who assert their opinions and choices solely based on their *feeling* that something is right.
another example is satisficing. he discusses its value, i think in the context of what show to watch, but doesn't discuss the meta-context; that is, only discusses the selection process for choosing a show, but doesn't discuss the selection process for choosing a mode of entertainment. you might say that the underlying principle of satisficing may hold statistically true, but the book is oriented toward applied contexts, which demands sourcing ideas from outside a pure, single-subject theoretical framework. i've spent a lot of time browsing netflix, and while there are some good shows, most of it is factory-churned bullshit. depending on the general viability, a person or couple might alternatively consider video, board, or other games, reading, walking, sports, or even do research on modes of entertainment, and consider how well they might be fulfilling along different parameters, like type 1 vs type 2 enjoyment, or instrumental functional utility relative to other goals (eg broader cultural knowledge, exercising strategic thinking ability, or social bonding), or exercising a lifestyle ethic of active curationism. it's important to recognize and point out that certain options seem like the obvious choice because of, e.g., the bias of normalcy, but that the are many statistically normal things that are counterproductive in many ways.
the discussion on satisficing is also interesting to compare with the first-page bias in search results, where he says you *shouldn't* be satisfied with initial results that seem acceptable. this reminds me of how sowell fails to point out how in the case of newspapers, market forces produce some bad results. (check out my Basic Economics: Fifth Edition review.)