He said that if you were able to look at the crows really closely, you would see that their eyes were stolen baubles, like buttons or marbles. To get real eyes, they had to steal them from children. Older people's eyes were too set in their ways of looking and would be no good for a crow. That's why people don't let their children out after dark. The crow who stole the eyes of a real child was king. With a piece of plastic they could just see what was in front of them, but with a child's eyes, they could see the whole world.