Dr Timothy C Johnson is an Assistant Professor in the School of Mathematical & Computer Sciences; Actuarial Mathematics and Statistics at Heriot-Watt University, Scotland. He has a PhD in financial mathematics from King's College London, a BSc in physics from Imperial College, London, and a MSc in financial mathematics from King's College London. Prior to studying for his BSc he worked in the energy industry for 16 years. Timothy joined Heriot-Watt in September 2006 as the UK Research Council's Academic Fellow in Financial Mathematics where he is responsible for trying to explain the science of financial mathematics to the general public. His research interests are in the field of optimal decision making under uncertainty, focusing on optimal stochastic control.