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Plenty of books extol the technical marvels of our information society, but this is an original analysis of the information itself--trillions of searches, calls, clicks, queries and purchases. Mayer-Schonberger and Economist data editor Cukier begin with a jolt by pointing out that the Centers for Disease Control and Prevention spends weeks evaluating reports from doctors and clinics before announcing a flu epidemic. Data mining is so efficient that today's privacy protections are irrelevant. Once enough of your activities, however anonymous, are "datafied," a computer can identify you. A fascinating, enthusiastic view of the possibilities of vast computer correlations and the entrepreneurs who are taking advantage of them.--Kirkus