|Possible World: entity that can be quantified over. There ist a dispute over the question whether possible worlds exist or are only assumed for purposes of proofs of completeness. See also actual world, modal logic, modal realism, realism, actualism, possibility, possibilia, quantification.|
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possible world/ essence / Chisholm: since we do not have necessary characteristics (nature), we might be different, but in the same world! (constant background) - if Socrates is necessarily a person, he does not have to exist - when he was a lawyer, he would be in another world, but it does not follow that he is in another world - as long as Socrates has no necessary being, every spossible world may exist without him.
Die erste Person Frankfurt 1992
Roderick M. Chisholm
Erkenntnistheorie Graz 2004