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Single Idea 7002

[filed under theme 19. Language / D. Propositions / 2. Abstract Propositions / b. Propositions as possible worlds ]

Full Idea

When pressed, philosophers will describe propositions as states of affairs or sets of possible worlds. But wait! Neither sets of possible worlds nor states of affairs - electrons being negatively charged, for instance - have truth values.

Gist of Idea

If propositions are states of affairs or sets of possible worlds, these lack truth values

Source

John Heil (From an Ontological Point of View [2003], Intro)

Book Ref

Heil,John: 'From an Ontological Point of View' [OUP 2005], p.10


A Reaction

I'm not sure that I see a problem. A pure proposition, expressed as, say "there is a giraffe on the roof" only acquires a truth value at the point where you assert it or believe it. There IS a possible world where there is a giraffe on the roof.


The 9 ideas with the same theme [propositions as sets of possible worlds]:

Pictures are possible situations in logical space [Wittgenstein]
A proposition is a set of possible worlds for which its intension delivers truth [Perry]
A proposition is a set of possible worlds where it is true [Lewis]
A proposition is a set of entire possible worlds which instantiate a particular property [Lewis]
A proposition is the property of being a possible world where it holds true [Lewis]
Propositions can't have syntactic structure if they are just sets of worlds [Lewis]
If propositions are states of affairs or sets of possible worlds, these lack truth values [Heil]
It is known that there is a cognitive loss in identifying propositions with possible worlds [Williamson]
Are there partial propositions, lacking truth value in some possible worlds? [Magidor]