Introduction: The Sociological Turn -- The Pseudo-Science of Science? -- The Strengths of the Strong Programme -- The Strong Program: A Dialogue -- Problems of Intelligibility and Paradigm Instances -- The Rational and the Social in the History of Science -- A Plague on Both Your Houses -- Two Historiographical Strategies: Ideas and Social Conditions in the History of Science -- The Role of Arational Factors in Interpretive History: The Case of Kant and ESP -- On the Sociology of Belief, Knowledge, and Science -- Scientific and Other Interests -- The Sociology of Reasons: Or Why โ{128}{156}Epistemic Factorsโ{128}{157} are Really โ{128}{156}Social Factorsโ{128}{157}