The first thing I want to do is make sure that you look at a timeline and how ridiculously long the Paleolithic Age is and how ridiculously short really the Neolithic Revolution is and certainly where we are in modern history. But if we had to summarize, if you have to put down that big sentence at the end that shows the teacher you know what you're talking about, you want to make sure that you mention that the Paleolithic or the Old Stone Age is characterized by hunting and gathering and moving along and that the Neolithic Revolution around 10,000 BCE, but don't quote me, is where people for climate change reasons began to settle their roots to kind of center their lives around agriculture, domestication of animals, and the building of civilization. So we hope that you understand a little bit more than when you press the button and we certainly hope that you pass all of your tests. So make sure you check out the World History playlist if you have to pass more tests in World History and if you're taking any other social studies class, go to the YouTube home page. We have like 400 videos. It's absolutely ridiculous. I say it at the end of every lecture because I mean it with all of my heart guys.