|Meaning change/semantic change: this is about the question whether the meaning of the terms of a theory change in the light of new knowledge. If they do, problems with incommensurability may arise. See also reference, incommensurability, progress, comparisons.|
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Change of concept/Change of meaning/Kuhn: There is an obligation to alter the meaning of fixed and familiar concepts.
Change of meaning/Change of concept/Change of theory/Kuhn: Before Copernicus, the sun was also called "planet". - Then they did not only learn the meaning of "planet" or what the sun was, but the meaning of "planet" changed - in a way that they could continue to make a useful distinction.
The same procedures now give evidence of very different aspects.
Meaning change/change of concept/Kuhn: Because the vocabularies of discussions about new theories consist mainly of the same expressions, some of these expressions must be applied differently to nature - hence the superiority of one theory over another cannot be proven in discussion.
Die Struktur wissenschaftlicher Revolutionen Frankfurt 1973