Introduction Part I: Some Basic Theory 1. What is the Problem with Experts? 2. Political Epistemology, Expertise, and the Aggregation of Knowledge Part II: Aggregation 3. Truth and Decision 4. Expertise and Political Responsibility: The Columbia Shuttle Catastrophe 5. Balancing Expert Power: Two Models for the Future of Politics 6. Quasi-Science and the State: “Governing Science” in Comparative Perspective 7. The Pittsburgh Survey and the Survey Movement: An Episode in the History of Expertise Part III: Expert Institutions 8. From Edification to Expertise: Sociology as a “Profession” 9. Scientists as Agents 10. Expertise and the Process of Policy Making: The EU’s New Model of Legitimacy 11. Was Real Existing Socialism a Premature Form of Rule by Experts? 12. Blind Spot? Weber’s Concept of Expertise and the Perplexing Case of China Part IV: Collective Heuristics: Expertise as System 13. Double Heuristics and Collective Knowledge: The Case of Expertise 14. Normal Accidents of Expertise 15. Expertise in Post-Normal Science