NoName
Posts: 2729 Joined: Mar. 2013
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Many things are simple to define but appallingly complex, if not impossible, to model. Fluid flow is one vast field where there are simple descriptions and definitions of phenomena that resist modeling. The same goes for economics. The same goes for such iterative functions as produce the Mandelbrot and Julia sets, as well as a host of other similar phenomena. I add these because while we can 'model' them by virtue of producing the simple equation and iteration process involved, we cannot, in principle, predict what will be the result at any given point. Models are not perfect predictors, nor is that their purpose. Finally, let us note that the current absence of a model does not say anything about the possibility of ever modeling any particular phenomenon. What we can say is that, in principle, it is impossible to assert that any given model can be predictive of real-world results, regardless of how many models are, in fact, predictive of such results.
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