And when you go to trade, then you have to develop, you know, new techniques to work that economic system. So maybe instead of bartering, you develop a money supply system or some type of way of doing it so I don't have to bring, you know, 15 pounds of gold on my back to pay you. Banking systems, insurance systems are all developed in that Middle Eastern world. And then you get a lot of cultural diffusion. The Middle East, which now is maybe known today as some parts being lacking in cultural diffusion, had a lot of cultural diffusion back then because the trade routes would take Arab traders throughout, you know, the world and expose them to different music and art and ideas and they would bring them back to their communities. So basically we're starting to push from traditional to market because of that idea of scarcity. You know, the Middle East was first in this world because in Europe at the same time we're in the Dark Ages.