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Can machines think? In 1950, Alan Turing, considered by some to be the father of modern computing, published a paper in which he proposed that, "If, during text-based conversation, a machine is indistinguishable from a human, then it could be said to be 'thinking' and, therefore, could be attributed with intelligence." He predicted that a computer would pass this "Turing Test" by the end of the century. That hasn't happened--yet. But the question continues to provoke and inspire. AI might be just around the corner, or it might be centuries away.