(1904-96). Alger Hiss, the former United States diplomat who was accused of spying for the Soviet Union throughout World War II and the postwar restoration, was convicted of perjury in 1950 for having denied he passed Department of State secrets to a Communist courier.
As used here , simulation is defined as the process of creating a model ( i.e. , an abstract representation or facsimile ) of an existing or proposed system ( e.g. , a project , a business , a mine , a watershed , a forest , the organs in your body ) in order to identify and understand those factors which control the system and / or to predict ( ...
The model is the most basic element of the scientific method. Everything done in science is done with models. A model is any simplification, substitute or stand-in for what you are actually studying or trying to predict. Models are used because they are convenient substitutes, the way that a recipe is a convenient aid in cooking.