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. Mathematics is a remarkably recent invention in the history of Homo sapiens. What made it possible? The path from quantity perception—shared by many species— to number, to mathematics is a story of human "biological enculturation." Rafael Núñez, UC San Diego. Recorded on 10/12/2018. (#34195)