Abstract for: Model Analysis with Vensim and Classic Global Models

In this hands-on workshop, we will explore ways of testing models and the conclusions that flow from them, using Vensim. This process is crucial to the development of understanding and avoidance of errors. Topics covered will include dimensional consistency and conservation laws, feedback elimination, extreme conditions tests, parameter sensitivity, and other formal and informal methods for getting the most out of a model. We will perform these experiments on one or a few classic models like World3 and World Dynamics. These are interesting testbeds because they are dynamically complex and, while they have flaws, they have also provided enduring insights.