Lexicon of Arguments

 

II 210
Possibility/situation/situation semantics/semantics of possible worlds/Hintikka: both approaches, the semantics of possible worlds and situation semantics agree that situations may have several dimensions, e.g. temporal, spatial, the overlapping of relations, inclusion etc. A crucial dimension is the following:
Intentionality/intensionality/Hintikka: intentionality and intensionality require the consideration of a background of alternatives (worlds, alternative situations).
Solution: there must be a dimension of pure possibility.
>Possible world semantics, >Situation semantics, >Situations, >Intentionality.
Possibility/dimension/Hintikka: the dimension of the possibility is simply introduced by a pure space-time structure, then we have branches of time that have the same temporal (and if necessary spatial) coordinates as the set s of all situations.
Intensional/possibility/Hintikka: when intensional concepts come in, we need a world which is just like a given world, except that everything there is possible. ((s) But it is indistinguishable from the world in which all this is given.)
Semantics of possible worlds/situation semantics/Hintikka: then there is the question of how the two still differ at all.