Models and simulations are pervasive in our everyday lives. They are used to reduce cost, analyze alternatives, reduce environmental impact, improve training, conserve resources and save lives.

Modeling and Simulation (M&S) helps us:

• analyze situations and predict outcomes
• consider "trade offs" in allocating time and resources
• make smarter decisions

Modeling and simulation is an iterative process with discernable steps and specific roles for individuals.

• Each step in the process is important.
• Skipping steps or changing their order affects the outcome.
• Input into the process affects the outcome.
• Understanding your role in the process and those of others is valuable.

Modeling and Simulation is still working to define itself. Recognizing the many areas of M&S that have "shades of gray" is necessary in understanding how M&S can work for you.