That Trebek gave Watsom credit for "Maxwell's silver hammer" when the clue was looking for the person – Maxwell – gave me a moment's pause.

Jeopardy does tend to be a little more forgiving of contestants during the first round – such as giving them a reminder to phrase-as-a-question, and letting them correct an initially wrong or incomplete utterance, if done almost instantly. Still, I'm not sure if such a interpretive error by a person would have been overlooked.