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Theory/Duhem: is an abstract system for summing and logical classification of a set of experimental laws. - Does not explain the laws.
Theory is an organization of our knowledge - Theories/Cartwright: are abound - their explanations are not all needed.
Theory/Cartwright: Prediction: lies in the fundamental laws. - Contents: lies in the phenomenological laws.
Theory Entry: preliminary state: "unprepared description": left of the as-if-operator - 1st order prepared description: requires equation. - 2nd order: Investigation of the prepared description with principles. - E.g. a laser can be described quite differently. (With or without memory). - According to the decision, there are bridge principles that say which equations are to be applied.
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Hacking I 362
Theory/Cartwright: includes no truth itself. - If truth, then by approximations!
How the laws of physics lie Oxford New York 1983
Einführung in die Philosophie der Naturwissenschaften Stuttgart 1996