David L. Rigby is a Professor in the Department of Geography at UCLA, Los Angeles, California, USA.  His research interests are in evolutionary economic geography, geographies of innovation and knowledge flow, technological change, and regional economic growth.  He is the co-editor of Elementary Statistics for Geographers (with Burt and Barber, 2009) and one of the editors of Economic Geography, a leading journal in the field.  Professor Rigby has published well over 50 research articles and book chapters, including 3 major books.