New in paperback. Hardcover was published in 2022. In a world awash in "fake news," where public figures make unfounded assertions as a matter of course, a preeminent legal theorist ranges across the courtroom, the scientific laboratory, and the insights of philosophers to explore the nature of evidence and show how it is credibly established. This book explains how to reason more effectively in everyday life, shows why people often reason poorly, and takes evidence as a pervasive problem, not just a matter of legal rules.