If the primary intension is not recoverable through pure a priori reasoning—as Williamson's externalist cases suggest—the context dimension cannot reliably encode analyticity, undermining the claim that the framework handles necessity-analyticity divergence in general.
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Reasoning where the transition from premises to conclusion makes no appeal to what we learn from observations
analyticity(Quine regards this as a problematical concept)
The property of a sentence being true by virtue of meaning alone
context dimension(Two-dimensional semantics)
The dimension of semantic evaluation that varies the context of utterance while holding the possible world fixed; tracks analytic truth obtainable from mastery of language
necessity(Auriol's modal theory of future contingents)
The property of necessarily being the way something is; equivalent to immutability in Auriol's modal theory
primary intension(two-dimensional semantics)
The semantic value of an expression evaluated across worlds considered as actual, where the reference is determined anew in each world according to the reference-fixing description