Dr. Michael H.G. Hoffmann is an associate professor in the School of Public Policy at Georgia Tech. His research focuses on the role of diagrammatic representations for cognitive processes involved in learning, creativity, deliberation, and conflict management. A concrete project in this research area concerns the development of an argument visualization tool called Logical Argument Mapping (LAM), together with the corresponding online tool AGORA: Participate—Deliberate. This research is mainly based on semiotics and pragmatism as developed by Charles S. Peirce.