Of course they have been to Mesopotamia, they've been to the mountaintop, there's not really a mountaintop there, but they do come back with the idea of writing, of cuneiform. And their cuneiform is going to be called hieroglyphics. And like cuneiform it basically starts off with symbolism, you know, a little picture of a monkey is a monkey, and eventually those symbols become sounds, become a written language. But one step that they took in front of the Mesopotamians is they're not going to use clay tablets forever. You can't even imagine how heavy it was to carry a book around back then. So they're going to be able to use some of their natural resources and specifically pyrus, which is going to be a plant material which is going to be made into a paper-like material. So you can record lots of things, you can put it right in your pocket, get on a boat and go down the river and teach something to somebody.