At one time, to call someone "green" was to disparage them as inexperienced or immature. Today, to call someone green is to exalt them as one of the environmentalist saviors of the planet. But it is amazing how many people are green in both senses. Some people who think it is wrong to tell children to believe in Santa Claus nevertheless think it is all right to tell adults to believe that the government can give the whole population things that we cannot afford ourselves. Believing in Santa Claus is apparently bad for children but OK for adults.