In Chapter 2 it was shown that systems are objects as perceived by people (see Figure 2.1). A system was also defined as an abstraction from the world, which is in fact a model. Miller (1967) talked about formulation of chunks of information when a threshold of complexity was passed, and it was also noted in Chapter 2 that these are recursively updated as more information is received. This is conceptual or mental modeling, and in fact much of our everyday life is concerned with this sort of activity. Despite the gross simplification, however, the process is one of reduction to a level of usefulness. It does help us to progress through everyday life; it is parsimonious.
KeywordsBuilding Model ARIMA Model Modeling Purpose Transfer Function Modeling Conceptual Graph
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