Doctor Watson
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This Jan. 13, 2011 photo provided by IBM shows the IBM computer system known as Watson at IBM's T.J. Watson research center in Yorktown Heights, N.Y. Watson, best known for handily defeating the world's best "Jeopardy!" players on TV earlier this year, is on a diet of medical textbooks and journals for health care. IBM says Watson, with its ability to understand plain language, can digest questions about a person's symptoms and medical history and quickly suggest diagnoses and treatments. (AP Photo/IBM)
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