Written and featuring Paul Wallis. How far back does human memory extend? How far back does the memory of Homo sapiens take us? Do we have a cultural memory of events prior to the most recent planetary cataclysm? Can we remember what life was like before the last Ice Age? And do we have any memory of the Great Leap Forward that took humanity from living in subsistence on the planet's surface to farming and city building?

The current scholarly consensus is that humanity made its great leap forward from foraging, hunting and gathering and subsistence living on the land. About 10,000 years ago, at the end of the most recent Ice Age. The Younger Dryas Cold Period. The leap was the genetic modification of naturally occurring plants to turn them into cultivate or crops. In the same moment, humanity discovered the art of animal husbandry...