And they were actually very advanced in medicine. And of course they used some of the evil spirit kind of stuff too, but they also learned how to use very scientifically based medical procedures, including some very rudimentary surgery. I don't know if I'd want to have a surgeon open me up back then, but they did it, which is pretty incredible. And of course the other fields such as architecture, you can just imagine building the pyramids, they use columns in many of their homes. So they're pretty far advanced for an ancient civilization without a doubt. So, nothing lasts forever, and the Old Kingdom is going to come crashing on down. Why don't we take a look at the crashdown right now.