This symposium addresses the interactive gene-culture co-evolution of the human brain with tool use and technology - ranging from simple stone tools millions of years ago to computers today. Our species' degree of reliance on cultural learning means that a population's ability to generate and maintain complex cultural repertoires, tools and technologies, such as those commonly found among hunter-gatherers, depends on its sociality, and specifically on its social norms and institutions. Thus, our apparent intelligence derives more from our collective brains than our individual intelligence. Joe Henrich, Harvard University. Recorded on 10/12/2018. (#34197)