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Harvard University Law School
Public Law & Legal Theory Research Paper Series
University of Chicago Law School
Public Law & Legal Theory Research Paper Series Paper No. 199
University of Chicago Law School Law & Economics Research Paper Series Paper No. 387
CASS R. SUNSTEIN University of Chicago - Law School
Harvard University - Harvard Law School
This paper can be downloaded free of charge from the Social Science Research Network at: http://ssrn.com/abstract=1084585
Electronic copy available at: http://ssrn.com/abstract=1084585Preliminary draft 1/15/08Â
Cass R. Sunstein* Adrian Vermeule** Abstract
Many millions of people hold conspiracy theories; they believe that powerful people have worked together in order to withhold the truth about some important practice or some terrible event. A recent example is a belief, widespread in some parts of the world, that the attacks of 9/11 were carried out not by Al Qaeda, but by Israel or the United States. Those who subscribe to conspiracy theories may create serious risks, including risks of violence, and the existence of such theories raises significant challenges for policy and law. The first challenge is to understand the mechanisms by which conspiracy theories prosper; the second challenge is to understand how such theories might be undermined. Such theories typically spread as a result of identifiable cognitive blunders, operating in conjunction with informational and reputational influences. A distinctive feature of conspiracy theories is their self-sealing quality. Conspiracy theorists are not likely to be persuaded by an attempt to dispel their theories; they may even characterize that very attempt as further proof of the conspiracy. Because those who hold conspiracy theories typically suffer from an â€œcrippled epistemology,â€ in accordance with which it is rational to hold such theories, the best response consists in cognitive infiltration of extremist groups. Various policy dilemmas, such as the question of whether it is better for the government to rebut conspiracy theories...