As insightful and (to some people) instructive as it may be, "Thinking, Fast and Slow" is an excruciatingly boring book that not only keeps repeating the same concepts or ideas an excessive number of times, but does so in a largely dull, dry, and uninspiring writing style. The author seems to be one of those folks who thinks what he's talking about is highly interesting to everyone but fails to realize that most laymen outside of the fields of psychology or statistics do not find it nearly as engaging as he does, and he fails even harder at conveying such ideas in a way that also appeals to the general masses. Daniel Kahneman talks a lot about cognitive biases and overconfidence in this book, but ironically, he doesn't seem to recognize the biases he himself often exhibits throughout this work: the more I read this book, the stronger my suspicion that the author thinks of himself as an "outsider" with a clear, objective view of all that is wrong with the foolish people making foolish decisions, without realizing that he himself may be subject to erroneous thinking.
Edit: after settling down a bit, I have gained a newfound appreciation for this book--its dryness and boringness are actually beneficial for when I want to relax and read something slow. While I still wouldn't necessarily recommend this book to anyone not interested in psychology, I wouldn't say I hate it either. I'm just gonna give it a 3-star rating for the time being.