https://www.washingtonpost.com/archive/lifestyle/magazine/2006/01/22/the-peekaboo-paradox-span-classbankheadthe-strange-secrets-of-humor-fear-and-a-guy-who-makes-big-money-making-little-people-laughspan/6b97ebc5-1c67-4c61-8509-5baf0157cc40/