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. And of course there's other inventions as well. Some of them are taken from the Fertile Crescent, other ones are homegrown to Egypt, they're going to have a written numerical system, they're going to be using geometry and algebra and different math systems. They're going to be able to use the Cyrus Star to predict the calendar. And they actually had their calendar, which was 7 days and 365 days a full year, which was only 6 hours off of the actual, you know, calculated solar calendar. So good for Egypt, it was really close. And they were actually very advanced in medicine.