Princess: Daddy, how do cheques work?
Him: Well, essentially, it’s a promise to pay. A long time ago, money was made of metal which was the actual value of the coin; but that was awkward to carry over long distances. So, they gave a piece of paper with a promise to pay and people trusted other people to pay out on that and that’s how banks came about.
Her (dubiously): People trusted the banks?
Him: Yes!
Her: But people trusted the Titantic not to sink.
Him: Well, funny you should mention that…