Using system dynamics models with litigation audiences

A litigation process involves many different parties. If models are used to support litigation, then there is a variety of audiences to which the model may be exposed. For example lawyers, members from the plaintiff's and defendant's organisations, expert modellers, arbitrators and judges. This paper discusses the experience of using System Dynamics models to support claims for compensation for time and cost overruns on large and complex projects. In this situation, it is argued that it is vital that the modeller understands how the different audiences will react to the models, otherwise the audience may dismiss the use of the model to support a claim for compensation. This paper discusses the nature of reactions to System Dynamics models by litigation audiences. These reactions highlight issues that the modeller faces when constructing a model. These issues need to be addressed so that the modeller can ensure that the model provides the support required to enable the client to optimise their chances of gaining compensation.