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When the streaming video service Netflix decided to begin producing its own TV content, it chose House of Cards as its first project. Based on a BBC series, the show stars Kevin Spacey and is directed by David Fincher, and it has quickly become the most watched series ever on Netflix. That kind of decision-making is an example of Big Data: the decade-long explosion of digital information, much of it personal, that has become available to companies and governments. This trend in predictions and decisions is the topic of a new book, Big Data: A Revolution That Will Transform How We Live, Work and Think.