Well, beyond ideas about relativisms incoherence, what are our other reasons for rejecting it? If we're abandoning realism either because we can't maintain it or to assess it critically, but we aren't ready to assume nihilism, that gives us a pretty narrow upper and lower limit. We're down to relativism, subjectivism, and non cognitivism. Of the three, relativism would seem to have the strongest evidentiary case from ethnography.
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