I remember a Monopoly game we played a long time ago, The bank ran out of money, so we printed some money using a pencil and paper–these were $1000 notes. Then we ran out of houses and hotels, we improvised. We used chess pieces.
Now take two steps backward into today. Derivatives are a parachute that will save the world when everything hits the fan. If you believe that, then contrary to my beliefs, the tooth fairy must still be alive.