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The journey of artificial intelligence began in the 1950s and has since seen significant milestones. Beginning with Christopher Strachey's checkers program in 1951, which showcased machine learning capabilities, AI garnered global attention with IBM’s Deep Blue defeating chess champion Gary Kasparov in 1997. Fast forward to 2011, when IBM's Watson triumphed in the trivia game show Jeopardy, further proving AI's potential for natural language understanding.