South Korean professional Go player Lee Sedol reviews the match with other professional Go players after the fourth match against Google's artificial intelligence program, AlphaGo. Handout/Getty Images hide caption

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Achievement Unlocked: Google AlphaGo A.I. Wins Go Series, 4-1
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Journalists watch a big screen showing live footage of the third game of the Google DeepMind Challenge Match between Lee Sedol, one of the greatest modern players of the ancient board game Go, and the Google-developed supercomputer AlphaGo at a hotel in Seoul on Saturday. AlphaGo won, clinching its victory in the best-of-5 match. Jung Yeon-Je/AFP/Getty Images hide caption

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South Korean Go player Lee Sedol reviews the match after resigning, giving Google's artificial intelligence program AlphaGo a two-game lead in their five-game series in Seoul, South Korea, Thursday. Lee Jin-man/AP hide caption

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Champion professional Go player Lee Sedol (right) makes a move in his match against Google's artificial intelligence program, AlphaGo, at the Google DeepMind Challenge Match in Seoul, South Korea, Wednesday. Lee Jin-man/AP hide caption

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South Korean Go champion Lee Sedol (right) poses with Google DeepMind head Demis Hassabis. On Wednesday, Sedol will begin a five-match series against a computer. Jung Yeon-Je/AFP/Getty Images hide caption

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How Google's Neural Network Hopes To Beat A 'Go' World Champion
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New autopilot features are demonstrated in a Tesla Model S during a Tesla event in Palo Alto, Calif., Wednesday. Beck Diefenbach/Reuters/Landov hide caption

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Self-Driving Cars Hit The Streets, Sort Of
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A row of Google self-driving Lexus cars at a Google event in Mountain View, Calif. The cars use sensors and computing power to maneuver around traffic. Eric Risberg/AP hide caption

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How Close Are We Really To A Robot-Run Society?
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Can people tell a computer-generated story from a human-authored one? How about a poem, or a playlist? Three new contests hope to find out. ImageZoo/Corbis hide caption

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Shall I Compare Thee To An Algorithm? Turing Test Gets A Creative Twist
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Researchers Warn Against 'Autonomous Weapons' Arms Race
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Courtesy of Ecco, an imprint of HarperCollins
If Robots 'Speak,' Will We Listen? Novel Imagines A Future Changed By AI
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Dealer Omar Abu-Eid adjusts a stack of chips before the first day of the World Series of Poker's main event in Las Vegas last July. Humans still reign in most versions of poker. Whew. John Locher/AP hide caption

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Look Out, This Poker-Playing Computer Is Unbeatable
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Do Feelings Compute? If Not, The Turing Test Doesn't Mean Much
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