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Informative look at humans and how we process information and perceive knowledge. The authors look at how modern times (and the attendant mass quantities of information and the increasingly specialized nature of expertise) and technology (which makes such information nominally available to anyone with Internet access) combine to make present-day humans simultaneously ignorant while believing themselves to be well-informed. The most interesting parts of the book for me where the sections discussing how individuals mistake the ability to find information for current knowledge, but in fact we often do not know how things work or the nuances of complex processes. Other parts of the book discuss topics that have been handled in book length by other authors, so are less new but nicely integrated into the whole. This includes heuristics, how people react to evidence that cuts against their beliefs, the impact of such processes on politics and opinion, and suggestions for how to become more truly knowledgeable. The authors make persuasive and necessary cases for the fact that no one has the time or mental capacity to truly understand nuance in all the areas necessary for daily life, that we have to rely on experts for certain things, and that a key to being informed is to learn how to evaluate experts. Which is a lesson everyone should learn.
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