RATIONALE "SiFAs" I. Berker & D. C. Brown, Conflicts and Negotiation in Single Function Agent Based Design Systems, Concurrent Engineering, Vol. 4, No. 1, 1996, pp. 17-33. By making agents have very limited and well-prescribed functionality this work attempts to tease out some basic ways that agents in a design system can conflict. Most other work has powerful agents with many possible ways to conflict.