3.4.6 Modeling and Simulation
Properly used, models and simulations can reduce time, resources, and
acquisition risk and may increase the quality of the systems being developed.
Users of these models and simulations must have a good understanding of their
capabilities and limitations and their applicability to the issues being
From a risk perspective, modeling and simulation may be used to develop
alternative concepts during system design; predict performance in support of
trade-off studies; evaluate system design and support preliminary design
reviews during design development; predict system performance and supplement
live tests during testing; examine the military value of the system; determine
the impact of design changes; hone requirements; and develop lifecycle support
requirements and assessments.
However, a key limitation through models and simulations is that the
results are only as accurate and certain as the quality of the underlying
relationships and input data. Blindly believing and using the output from
models and simulations should never be done.