So the Middle Kingdom is important, we're just not going to talk about it a lot right now. What we do know is in that 1640 BCE, we have a group of Asian nomads that are called Hyksos, who are going to invade using horse-drawn carriages. They also invaded the Indus and the Fertile Crescent, so these nomads are just cray-cray for power, and they're going to take over Egypt. This is called the second intermediate period, about 1640 BCE to about 1570 BCE, and at that point we're going to get the rise of the New Kingdom and a much more powerful system of pharaohs and civilization in general. So what do you know about that, kids? You learned something about ancient Egypt, but of course we're going to need a new lecture soon enough called the New Kingdom to learn about what happened to the New Kingdom now that we did the Old Kingdom. We certainly hope that your brain is a little bit bigger than when you press the button, and we certainly hope that you remember always that where your attention goes, your energy flows.