Philosophy Dictionary of ArgumentsHome | |||
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Accessibility, philosophy: accessibility is an expression of a relationship between possible worlds. For example, a world with IT technology is not accessible from a world where the wheel has not yet been invented. See also modal logic, possible worlds, systems, S 4/S 5, knowledge, transitivity, counterpart theory, centered worlds, cross world identity._____________Annotation: The above characterizations of concepts are neither definitions nor exhausting presentations of problems related to them. Instead, they are intended to give a short introduction to the contributions below. – Lexicon of Arguments. | |||
Author | Concept | Summary/Quotes | Sources |
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M.J. Cresswell on Accessibility - Dictionary of Arguments
Hughes I 67f Accessibility/possible worlds/Hughes/Cresswell: many authors: From conceivability or imaginability. >Conceivability. E.g. game: the visibility relation between players. - Invisible worlds are not taken into account. Conceivability of worlds is always considered from the actual world: corresponding system T. >Actual world, cf. >Actuality. Necessity/T: Truth in a selected set of worlds. System T: necessity: only considers worlds that we can imagine. System S4: Transitivity of conceivability: what could be conceivable in other worlds. - (i.e. conceivable in a possible world, which in turn can be imagined from the actual world). - Then we have another necessity: truth in all worlds. System S5: all are visible to all, not a question of imagination._____________Explanation of symbols: Roman numerals indicate the source, arabic numerals indicate the page number. The corresponding books are indicated on the right hand side. ((s)…): Comment by the sender of the contribution. Translations: Dictionary of Arguments The note [Concept/Author], [Author1]Vs[Author2] or [Author]Vs[term] resp. "problem:"/"solution:", "old:"/"new:" and "thesis:" is an addition from the Dictionary of Arguments. If a German edition is specified, the page numbers refer to this edition. |
Cr I M. J. Cresswell Semantical Essays (Possible worlds and their rivals) Dordrecht Boston 1988 Cr II M. J. Cresswell Structured Meanings Cambridge Mass. 1984 Hughes I G.E. Hughes Maxwell J. Cresswell Einführung in die Modallogik Berlin New York 1978 |