Full Idea
If it is claimed that linguistic differences significantly correlate with cultural differences, it must therefore be possible to identify the linguistic differences independently from the cultural ones.
Gist of Idea
If it is claimed that language correlates with culture, we must be able to identify the two independently
Source
David E. Cooper (Philosophy and the Nature of Language [1973], §5.1)
Book Reference
Cooper,David E.: 'Philosophy and the Nature of Language' [Longman 1979], p.105
A Reaction
This is a basic objection to any extreme relativist version of the S-P hypothesis. They are part of the conspiracy to overemphasise language in philosophy, and they are wrong.