Donald MacKenzie is a Professor of Sociology at the University of Edinburgh. He is primarily a sociologist and historian of science and technology. His current research is on the sociology of financial markets, and he is researching in particular the development of automated high-frequency trading and of the electronic markets that make it possible, with a special focus on how trading algorithms predict the future. His books include Inventing Accuracy: A Historical Sociology of Nuclear Missile Guidance (MIT Press, 1990), An Engine, Not a Camera: How Financial Models Shape Markets (MIT Press, 2006), Do Economists Make Markets? On the Performativity of Economics (Princeton University Press, 2007; co-edited with Fabian Muniesa and Lucia Siu), and Material Markets: How Economic Agents are Constructed (Oxford University Press, 2009). With his colleagues Diane-Laure Arjaliès, Philip Grant, Iain Hardie and Ekaterina Svetlova, he is currently preparing Chains of Finance: How Investment Management is Shaped (Oxford University Press).