 Because it's pretty easy to move an empty vessel. It's very hard to move a vessel that's full of concrete thinking. Do you think it's just they don't know anything, or do they know this stupid idea of human nature, which is that it is perfectible? Well, I would say it's a combination of two things. It's not that we can perfect human nature. That's kind of the early progressives and idealism of the early 20th century.