|Possibilia, philosophy: possibilia are accepted, possible objects that do not exist (in our world) actually. It is controversial whether one should discuss them at all, since their properties are not so clearly defined that they can always be distinguished from one another, for example, to count them. See also possibilism, actualism, modal realism.|
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Non-existence/non-existent objects/localization/possible worlds/Hintikka: thesis: any non-existent object is in its own world.
Possible worlds/Leibniz/Duns Scotus/Hintikka: such considerations led Leibniz and Duns Scotus before him to distribute the unordered set of non-existent individuals to divided worlds.
The totality of all non-existent objects is a non-well-formed whole.
Non-existent objects/possible objects/unrealized possibilities/Hintikka: but are not some of these non-existent objects in our own actual world? Hintikka: thesis: yes, some of these barely possible objects are in the actual world.
Bona fide object/Hintikka: a bona fide object can exist in a possible world and be missing in another.
World line/Hintikka: when it comes to which world line can be drawn, existence is not the most important problem. Rather being well-defined.
HintikkaVsLeibniz: we also allow that an object can exist in several worlds.
Question: if inhabitants of two different worlds can be identical when are they identical then?
Possibilia/Hintikka: Thesis: the speech about human experience makes the assumption of Possibilia necessary. (Unrealized Possibilities). HintikkaVsQuine.
Intentionality/Husserl/Hintikka: according to Husserl, the essence of human thought is in a relationship to unrealized possibilities.
Possibilia/Hintikka: we need possibilia to deal with logically incompatible entities of the same logical type.
Semantics of possible worlds/Hintikka: the semantics of possible worlds is the corresponding model theory.
Jaakko and Merrill B. Hintikka
The Logic of Epistemology and the Epistemology of Logic Dordrecht 1989
J. Hintikka/M. B. Hintikka
Untersuchungen zu Wittgenstein Frankfurt 1996