The bad experience happened in front of 200 people
InterferenceHardProblem. A seller shills their own auction, or an item never ships, and the buyer complains loudly in the chat of a live show with 200 viewers. You want to measure what that costs. What is the unit?
Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.