Modeling and simulation is an important, widely used technique with a wide range of applications
Computation power increases (Moore’s law) have made it more pervasive
In some cases, it has become essential (e.g., to be economically competitive)
Rich variety of types of models, applications, uses
As easy (actually, easier!) to get wrong or misleading answers as it is to get useful results
Appropriate methodologies required to protect against major mistakes.