|Naturalistic fallacy: is described as the error to infer from being to what should be. From the fact that something is the way it is, cannot be concluded that it should be like this. The expression comes from the Principia Ethica by G. E. Moore (1903), but the problem goes much further back and has already been pre-formulated by G. Hume in his “A Treatise of Human Nature” (1738-40). Another name for the problem is the being-should fallacy.|
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Naturalistic fallacy: "Should" cannot follow from "being". Kuhn: This sentence has become a phrase and is no longer implemented everywhere in practice.
Stanley Cavell and others have discovered significant contexts in which the normative and the descriptive are inseparably connected.
My descriptive generalizations speak for the theory because they can also be derived from it, while they develop anomalous behavior in other conceptions of the nature of science.
This argument is circular, but it is not a bad circle. (Hermeneutic circleVsnaturalistic fallacy). (I 219)
Die Struktur wissenschaftlicher Revolutionen Frankfurt 1973