I think Rutter and Jennings both realized that if they wanted a respectable score, they were going to have to buzz in on every question before determining whether they knew the answer.
I was hoping Trebek would explain how Watson was buzzing in. In the studio, there a blue ring around the question board that lights when the buzzers are active. But Watson can't see or hear.
I'm very impressed with the programming. The sophistication required to get some of those answers right is amazing. The real work in this project is in the context parser for the encyclopedia entries.
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