In conversation at EduTECH earlier this year, Harold Jarche evoked George E. P. Box’s quote that “all models are wrong, but some are useful”. Of course, the purpose of a model is to simplify a complex system so that something purposeful can be done within it. By definition, then, the model can only ever be an approximation of reality; by human error, furthermore, it won’t be as approximate as it could be.
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