What is the value of comparison for research in historical sociology? Today, social scientists regularly express doubt about the positivist premises that have long justified comparison's use: that cases can be unproblematically compared as though they are independent of one another, that comparison can reliably yield valid causal inference, and that comparative methods can grapple with questions of meaning, sequence, and process that are central to historical explanation. Yet they remain reluctant to abandon comparison altogether, not least because comparisons are still manifestly useful in the research process. After Positivism presents a bold new set of warrants and methodologies for comparison that takes these criticisms fully into account. The contributors to this book marshal a wide array of postpositivist approaches to knowledge to reconstruct the analytic potential of comparison for a new generation of social scientists. In addition to providing fresh answers to classic questions about case selection and causal inference, authors ponder the role comparison plays in a world where social phenomena are demonstrably time-, space-, and concept-dependent; where causation is typically conjunctural; where social structures and groups emerge and die; and where important objects of inquiry can be understood only in terms of relationships, emergent properties, or contingent and irregular effects. Engaging and timely, this book will be of interest to all those who seek to improve our explanations of historical change in social-scientific research.