Many academics consider the active-vs.-passive debate settled. Yet, despite the strong evidence supporting a passive approach, many investors still assume that skillful active management can increase returns, net of costs. In this three-part series, Brad Steiman offers fresh insight on the debate and provides content that advisors may find useful in their communication efforts. Part 1 features questions relating to the theoretical aspects of market efficiency and active manager performance. In subsequent columns, he will explore the implementation of active and passive strategies, and feature additional questions and comments submitted by readers.