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cited.6 We have no way of foreseeing what further such features might become
relevant to the truth of an utterance.
For example, we have already introduced one unexpected variable,
hemisphere (as between southern and northern). There are plenty of others,
seemingly without limit. The truth of "It is 5:00 p.m." depends on time zone,
an entirely conventional construct. (As Wittgenstein once noted, time zones
are bound to our planet; "It is 5:00 p.m. on the sun" has no truth-value.)
And some locutions presuppose a kind of vantage point, often distinct from
the place of actual utterance, that can shift even within a single sentence
(Fillmore 1975; Taylor 1988). Take
(2a) Zonker went to Uncle Duke's party.
(2b) Zonker came to Uncle Duke's party.
(2c) I'm going out to clean the pasture spring; . . .--You come too.
(Robert Frost, The Pasture)
Semantic pragmatics 141