The most pervasive change in this volume is the addition of new text, some of it reflecting new issues and developments, but most of it consisting of attempts to explain enduring issues of evidentiary law. Problems have been changed less than the text. The legal landscape is in constant flux, but most of the evidentiary problems that courts must face change far more slowly than do the doctrines used to address those problems. The text is designed for a four-credit course.