Lesson 223 of 1455
IBM Watson on Jeopardy, 2011
A computer that played a trivia game show became the face of AI for a moment, then taught a hard lesson about hype.
Builders · AI Foundations · ~13 min read
The Computer That Played Trivia
In February 2011, IBM's Watson played a two-match Jeopardy exhibition against champions Ken Jennings and Brad Rutter. Watson won decisively. Jennings wrote his Final Jeopardy answer with a note: I for one welcome our new computer overlords.
Watson was not a neural network. It was a massive ensemble of classical NLP techniques, hypothesis generation, evidence scoring, and scalable retrieval over encyclopedic text. It ran on an IBM cluster with 2,880 POWER7 cores and 16 terabytes of memory.
The famous mistakes
- In a US Cities category, Watson answered Toronto, a Canadian city
- It sometimes repeated an opponent's wrong answer
- It bet oddly, reflecting its confidence calculus more than common sense
IBM immediately pivoted Watson into healthcare, promising AI oncology tools that would transform medicine. The story of Watson Health over the next decade was far less triumphant. Hospitals found the tools hard to integrate, results underwhelming, and IBM eventually sold much of Watson Health in 2022.
“I for one welcome our new computer overlords.”
Key terms in this lesson
The big idea: winning a game show and transforming medicine turned out to be very different problems. The public saw one and got sold the other.
End-of-lesson quiz
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