Rob Cross is associate professor, McIntire School of Commerce at University of Virginia, where he specializes in organizational behavior. He is also the director of The Network Roundtable (www.thenetworkroundtable.org), a consortium of over 100 organizations focused on applications of network ideas that yield measurable business impact and strategic advantage.

Robert J. Thomas is executive director of Accenture's Institute for High Performance and a senior executive based in Boston, Massachusetts. He specializes in leadership, organization design, and transformational change.