Daniel Kahneman has produced an excellent book. He continues to build and expand on the famous paper he and Amos Tversky published in 1974 ("Judging Under Uncertainty", a copy of which is usefully appended to this book) and has since spawned innumerable books on the theme (eg Wray Herbert's "On Second Thought"), and even related themes like Nassim Taleb's "Black Swan". "Thinking Fast and Slow" is not a textbook; it is intended for the layman who wants to have a clear and deep understanding of man's cognitive functions. Most of Kahneman's studies will amaze readers not familiar with this subject. For example, when tested, it is still remarkable that the clinical judgments of trained professionals are less accurate than statistical predictions based on a few scores or ratings. Hence counsellors who interviewed students were less accurate in their predictions on the students' performance than statistical predictions using only a few denominators such as High School grades and aptitude test results. The reason Kahneman, a psychologist, was awarded the Nobel Prize in economics was that his (and Tversky's) thesis was applied by economists to understand why economic and financial predictions so often go wildly wrong when they were (or so it was believed) so carefully and rationally made.
This review also hopes to point readers to a book I read as a student in 1967. It's called "Straight and Crooked Thinking" by R H Thouless. That book has so many similar points and Thouless was a teaching psychologist from Cambridge University in the UK. Although Thouless' book concerns flaws in the use of language and logic in thinking, it also discusses the effect of hidden bias and prejudice. Straight and Crooked Thinking has just been published in the 5th edition by R H Thouless' grandson, C R Thouless. The first was published in 1930. Kahneman's book will likely be as long lived.