Manipulating a model (changing decision variables or the environment) is much easier than manipulating a real system. Experimentation is easier and does not interfere with the organization’s daily operations.
Models enable the compression of time. Years of operations can be simulated in minutes or seconds of computer time.
The cost of modeling analysis is much lower than the cost of a similar experiment conducted on a real system.
The cost of making mistakes during a trial-error experiment is much lower when models are used than with real system.