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Single Idea 15736

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

Full Idea

I identify propositions with properties that are instantiated only by entire possible worlds. If properties are the sets of their instances, a proposition is a set of possible worlds. A proposition is the property of being a world where it holds.

Gist of Idea

A proposition is the property of being a possible world where it holds true

Source

David Lewis (On the Plurality of Worlds [1986], 1.5)

Book Ref

Lewis,David: 'On the Plurality of Worlds' [Blackwell 2001], p.53


A Reaction

This is so far away from my concept of a proposition (as a truth-evaluable representational mental event) that I struggle to compute it. So the proposition that I am sitting here is the property of 'being the actual world'. Eh?

Related Idea

Idea 15738 Propositions can't have syntactic structure if they are just sets of worlds [Lewis]


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]