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Model: always works in connection with a commentary.
Model of sensations: requires internal objects.
Theory of sensations does not speak of inner objects.
Sellars: the basic assumptions of a theory are usually not formed by an uninterpreted calculus, but by a model (Definition model: the description of a domain of known objects which behave in the usual way).
A model is characterized primarily by the fact that gets commentary alongside, which restricts or limits the analogies. The descriptions of the basic behaviors correspond to the postulates of the logistic image of theorizing.
Der Empirismus und die Philosophie des Geistes Paderborn 1999