As part of his project Paradoxes of Plurality: Ethnic and Religious Diversity in the Medieval Mediterranean and Beyond, Dr. Brian Catlos, Associate Professor, Department of Religious Studies, will speak on Jan. 28 at 12 p.m. in Guggenheim 201E on his developing theoretical approach in communal relations that aim to reconcile the apparently conflicting data and account for changes in policy and social and cultural relations among these groups - an approach that may well have applications far beyond the Middle Ages and the Mediterranean.