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IBM Watson wins Jeopardy! (2011): live QA before millions

Watson beat Jeopardy! champions by combining information retrieval, ranking, and many heuristics—not one magic net.

IBM Watson wins Jeopardy! (2011): live QA before millions

In February 2011, IBM Watson defeated Ken Jennings and Brad Rutter on Jeopardy!. The system combined dozens of NLP, search, and scoring techniques over a huge corpus.

The event was a media splash comparable to Deep Blue. IBM pivoted to “cognitive computing” in health and enterprise, with mixed commercial results.

Technically, Watson illustrated heterogeneous systems engineering just before end-to-end LLMs dominated—a reminder that public milestones do not always match the architecture that later wins.