The notion of validity refers to the degree of uniformity and coherence in the environment specifications in.Comparaison to reality (Garris, et al 2002). Pedgen et al (1995) state that results obtained by simulations have to be.The same as those obtained in the real world with the system serving as a model for the simulation. Although.Simplified the model, must be precise because the essential function of a simulation is to provide users with a better.Understanding of reality. This is particularly important in the case of an educational simulation. The notion of.Precision with which the model represents reality is closely connected to an earlier, introduced notion that of the.Simplification of reality. Indeed the simpler, a model is the more, it runs the risk of distorting the reality under study.In order to choose the characteristics stemming from the reality which are to be included in the model the simulation,,Designer thereby has to determine which phenomena will be reproduced with precision.
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