Responses to the 'policy science' problem: reflections on the politics of development

Taking as its point of departure the failure of the ‘policy science’ project, the article discusses the declining authority of ‘one size fits all’ policy advice. It relates this to the absence of a robust empirical basis for such positions, as shown by the cross-country regressions literature, and relates it also to changes in a range of disciplines, including natural sciences and mathematics. It discusses the rising tolerance for inconsistency between implementation logics and argues that these issues, while of general importance, are most obvious in the context of development, where ‘one size fits all’ policy logics have been heavily contested.