How do we know what we think we know? The answer is evidence, but evidence is no simple thing. What counts as evidence in a scientific context or private dispute may not stand up in court. Frederick Schauer combines perspectives from law, statistics, psychology, and philosophy to assess the nature of evidence in the era of "fake news."

Frederick Schauer was the David and Mary Harrison Distinguished Professor of Law at the University of Virginia and the author of Free Speech: A Philosophical Enquiry; Playing by the Rules; Profiles, Probabilities, and Stereotypes; Thinking Like a Lawyer; and The Force of Law. He was a Fellow of the British Academy and of the American Academy of Arts and Sciences, was the Frank Stanton Professor of the First Amendment at Harvard University for twenty years, and was a founding editor of the journal Legal Theory.