Contributor(s): Professor John Sidel | In this new series of lunchtime lectures, nine of LSE's most senior academics explain the latest thinking on how social scientists work to address the critical problems of the day. They survey the leading ideas and contributions made by their discipline, explain the types of problems that are addressed and the tools that are used, and explore the kinds of solutions proposed. John Sidel is Sir Patrick Gillam Professor of International and Comparative Politics.