In an old and wonderful Aesop fairy tale, the only thing that stood between a house full of mice and their complete happiness was the cat. The mice got together one evening and came up with various plans to deal with the danger of the cat. They all voted on one brilliant idea; they would hang a bell around the cat’s neck. Then wherever it went, the bell would warn them of danger if it got closer. All of the mice jumped and clapped at the idea. The only problem was getting volunteers to hang the bell around the cat’s neck!