This was one of about a hundred famous mediaeval riddles in thi book, and there's no answer to so this one is clear. But there were several others that there is no answer to. There are the scholars that spend endless hours debating. And maybe this is the most ridiculous use of human mental energy ever, but it's also quite a heroic in a way. Someone, some people have goneithink, i'm using your words here. Some one, people have gone insane when they get locked. The sleeping beauty problem which i won't get into because it's a little complicated. Is sort of a cousin of the, ah, the monte hall problem.