Before the advent of modern computer technology and software, many modeling efforts and scientific experiments were designed for linear, often static systems, that had the advantage to be analytically solvable. The ways of thinking about system behavior and the tools applied to describe that behavior were rooted deeply in classical mechanics. This science was used to describe the behavior of whole classes of moving objects, such as pendulums, falling rocks, or projectiles. We modeled those systems in the previous chapter. The scientific paradigms associated with classical mechanics were not only applied in the realm of the natural sciences but increasingly influenced models of economic and ecological systems as well.
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