Building an infeasible optimization model is easy. Finding the cause of the infeasibility is much more difficult. The AIMMS Math Program Inspector is a graphical tool that allows you to analyze a model, feasible, infeasible or unbounded. This webinar demonstrates the basic functionality that allows you to inspect any model. In addition, it showcases some of the advanced features that allow you to analyze an infeasible model - for instance the IIS, the substructure causing infeasibility and the substructure causing unboundedness.