It is a popular fact that nine-tenths of the brain is not used and, like most popular facts, it is wrong... It is used. And one of its functions is to make the miraculous seem ordinary and turn the unusual into the usual. Because if this was not the case, then human beings, faced with the daily wondrousness of everything, would go around wearing big stupid grins, similar to those worn by certain remote tribesmen who occasionally get raided by the authorities and have the contents of their plastic greenhouses very seriously inspected.