'Theoretical work on complex phenomena is beginning to have a major impact on several disciplines. Graham Room gives a clear summary of many of these insights and shows how this work can help guide public policy.'--Geoffrey M. Hodgson, University of Hertfordshire, UK'This is a very important book. Graham Room gives a very detailed, accurate and accessible review of complexity theory as it applies to social policy. It will be of interest to academics who really want to understand the implications of complexity theory for policy making in complex and fast-changing situations and to those undertaking advanced courses in politics, economics and sociology.'--Jean Boulton, University of Cranfield, UK