Conversation

You know that effect where you tap out a melody in your head and you think it's a lot more obvious to others than it actually is (I forget the ref)? There's a reverse effect where you think a signal is very impoverished but people get it easily.
Replying to
(Melody ...: The "curse of knowledge" study as recounted by the Heath Brothers in "Made to Stick") I make quiz questions and this "quality of signal" issue is one I encounter a lot. Just what clues to add to a puzzle-like question is a Goldilocks problem.