While much literature has sprouted on peer review, this is the first book-length, wide-ranging study that utilizes methods and resources of contemporary philosophy. It covers the tension between peer review and the liberal notion that truth emerges when ideas proliferate in the marketplace of ideas; arguments for and against blind review of submissions; the alleged conservatism of peer review; the anomalous nature of book reviewing; the status of non-peer-reviewed publications; and the future of peer review.