Marco Polo is captured and in prison he starts telling his tales, which gets put into the Book of Marvels, The Travels of Marco Polo. And this is the book that represents the knowledge piece that's going to influence all of those changes. It's not immediate, but when people start learning about these tales, and some of them might have been exaggerated a little bit, but they start learning about the customs and the new inventions and everything that we talked about before, that's going to create a yearning for more people to want to do it. And of course, we didn't mention that he traveled along the Silk Road, so that Silk Road is going to represent kind of that connection, that bridge between the Western civilization and the Eastern civilization. And if the Mongols stayed in power, it might have been different. They were open to accepting some Western traditions, including Christianity, but the Chinese are going to conquer the Mongols, they're going to be a much more closed society, so really the exchange in the beginning is going to be towards the West. So we are now going to have access to these new foods and these new clothings and these new inventions, and that's the big one.