So it might seem like a small thing. You go from hunter-gatherer to agriculture, but it's been one of the most, maybe the most profound, oh, well, it's probably up there with language and writing, things that have defined what makes humans humans. And to get a sense of where this agriculture was born, here's the various regions that we believe agriculture emerged from. The Levant right over here, and the Eastern Mediterranean, modern-day Middle East, Syria, Israel, Palestine, Iraq, Southeastern Turkey. This is one of the areas where we think agriculture first emerged on the order of 10,000 to 15,000 years ago. We believe rice came from China. I've seen estimates anywhere from 6,000 to 13,000 years ago.