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Structured Development for Real-Time Systems by Stephen J. Mellor, Paul T. Ward

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Chapter 3. Real-Time Modeling Issues

The nature of models

One of the essentials of the highly evolved social organization of the human species is our ability to communicate using symbols. Our spoken and written languages constitute an elaborate model of the realities surrounding us, a model that allows us to exchange complex information about people, places, and things without actually needing to see or touch them. The converse is also true: any model is a language whose symbols allow us to exchange information without actual contact with the things modeled. Although natural language is incomparably rich as a model, people throughout the ages have felt the need to create narrower, more specialized models or languages for certain purposes. For example, ...

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