Tom Brindley

“Schiphol Airport in Amsterdam. There the authorities have etched the image of a black housefly into each urinal. It seems that men usually do not pay much attention to where they aim, which can create a bit of a mess, but if they see a target, attention and therefore accuracy are much increased.”
― Richard H. Thaler, Nudge: Improving Decisions About Health, Wealth, and Happiness