Not directly related to voting, but a while back someone gave a talk or there was a book/lecture that used an example that went something like this:<p>"Two doctors give you an independent diagnosis: One doctor says there's a 99% chance it's disease A, but there's a 1% chance it's disease B. The other doctor says there's 99% chance it's disease C, but there's a 1% chance it's disease B. Question: What's the most likely outcome? Answer: It's most likely disease B, the point where both doctors/experts agree (even though they both only give it a 1% chance of being true)."<p>Does anyone recall where that example comes from? I wanted to cite it the other day.