Diamonds are Forever

Noûs 54 (3):632-665 (2020)
Download Edit this record How to cite View on PhilPapers
Abstract
We defend the thesis that every necessarily true proposition is always true. Since not every proposition that is always true is necessarily true, our thesis is at odds with theories of modality and time, such as those of Kit Fine and David Kaplan, which posit a fundamental symmetry between modal and tense operators. According to such theories, just as it is a contingent matter what is true at a given time, it is likewise a temporary matter what is true at a given possible world; so a proposition that is now true at all worlds, and thus necessarily true, may yet at some past or future time be false in the actual world, and thus not always true. We reconstruct and criticize several lines of argument in favor of this picture, and then argue against the picture on the grounds that it is inconsistent with certain sorts of contingency in the structure of time.
Keywords
No keywords specified (fix it)
PhilPapers/Archive ID
DORDAF
Upload history
First archival date: 2018-08-17
Latest version: 3 (2018-12-05)
View other versions
Added to PP index
2018-08-17

Total views
557 ( #7,541 of 52,662 )

Recent downloads (6 months)
99 ( #4,917 of 52,662 )

How can I increase my downloads?

Downloads since first upload
This graph includes both downloads from PhilArchive and clicks on external links on PhilPapers.