Immaturity.
It is popular, because it is pithy, to divide the world into twos. Those who lounge and those who pull their own weight. The kind who can count and the kind who can’t (or is that three kinds?). Those with loaded guns, and those who dig (Clint Eastwood). “Those who come into a room and say, ‘Well, here I am!’ and those who come in and say, ‘Ah, there you are,’” (Frederick Collins). “Those who say to God ‘Thy will be done’ and those to whom God says ‘Thy will be done,’” (C.S. Lewis). And, most hilariously, Robert Benchley’s distinction (also attributed, with minor variations, to Murphy, Anonymous, and probably, given the viral nature of rumor on and off the internet, to Bill Gates as well): “There are two kinds of people in the world, those who believe there are two kinds of people in the world and those who don’t.”
