J. Doyne Farmer is Director of Complexity Economics at the Institute for New Economic Thinking at the Oxford Martin School, and is the Baillie Gifford Professor at Mathematical Institute at the University of Oxford, as well as an External Professor at the Santa Fe Institute. His current research is in economics, including financial stability, sustainability, technological change and economic simulation. He was a founder of Prediction Company, a quantitative automated trading firm that was sold to the United Bank of Switzerland in 2006. His past research spans complex systems, dynamical systems, time series analysis and theoretical biology. He founded the Complex Systems Group at Los Alamos National Laboratory, and while a graduate student in the 70’s he built the first wearable digital computer, which was successfully used to predict the game of roulette.