The simple explanation is basically that the world has been reborn. Several times. Sometimes it's small, mostly divine political changes. That's the egg being repainted and occasionally pocked.<br/><br/>Most of the recent ones, though, were a lot more violent. This is the egg being broken open and scrambled. This is where the comparison breaks down, because you can't really re-break and re-scramble an egg. Worlds can be. Eggs, not so much.<br/><br/>Again, the demon whose number you were given is, in essence, a historian. And can give a much better explanation, complete with diagrams.