Now, whatever the actual cause of the birth of agriculture, it has had profound implications on our society. You would not have had the birth of city-states without agriculture. City-states had high-density populations. They could not have been supported with hunter-gathering. You could not have had the development of technology, which people needed more time. You needed specialization in order to have that. It's, I would say, fair to say, we wouldn't even have our modern, our modern civilization would not have been possible without agriculture.