This book examines the ethical and legal challenges presented by modern techniques of memory retrieval, especially within the context of potential use by the US government in courts of law. Specifically, Marc Blitz discusses the Fourth Amendments protections against unreasonable searches and theFifth Amendment's self-incrimination clause. He also argues that we should pay close attention to another constitutional provision that individuals generally dont think of as protecting their privacy: The First Amendments freedom of speech. First Amendment values also protect our freedom of thought, and thisnot simply our privacyis what is at stake if government engaged in excessive monitoring of our minds.