Imagine doing Stonehenge in the Paleolithic Age. Guys pick up Stonehenge. We're going to the other side to catch the animals. So art is going to be a huge deal. Technology, inventing things like calendars and the wheel and early writing system is going to be very important. Not to mention that people start thinking about larger issues like religion, like politics, like how do we build a civilization. So I would say social classes, division of labor, government, all of these are very important effects of the Neolithic Revolution.