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Our Digital Lives, Monitored By A Hidden 'Numerati'

Most people generate an immense amounts of digital data during a single day — often without a second thought. But Stephen Baker, a senior writer at BusinessWeek, warns that the information generated by e-mail messages, credit card purchases, cell phones calls and Internet shopping is being monitored by a group of entrepreneurial mathematicians, who are poised to use it to control human behavior.

Baker's new book, Numerati, examines the "mathematical modeling" of humanity — and its potential consequences.

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