JBH391/389 May 5th COmputer Science Seminar A Big Ambiguity in the UML 2.0 Abstract Recent changes in the Unified Modeling Language (UML) have introduced a major ambiguity. The presentation will give examples, explains why the ambiguity is important, and suggests what practitioners and teachers can do about it. Part of the seminar will be interactive and gather data on how people interpret ambiguous diagrams. RJBotting