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dc.contributor.authorBerto, Francesco
dc.contributor.authorJago, Mark
dc.identifier.citationBerto , F & Jago , M 2019 , Impossible worlds . Oxford University Press , Oxford; New York .
dc.identifier.otherPURE: 255750701
dc.identifier.otherPURE UUID: 96b46831-2e39-4496-82b1-413e1c4dcf64
dc.identifier.otherORCID: /0000-0003-3246-657X/work/60888296
dc.description.abstractThe latter half of the twentieth century witnessed an ‘intensional revolution’, a great collective effort to analyse notions which are absolutely fundamental to our understanding of the world and of ourselves—from meaning and information to knowledge, belief, causation, essence, supervenience, conditionality, as well as nomological, metaphysical, and logical necessity—in terms of a single concept. This was the concept of a possible world: a way things could have been. Possible worlds found applications in logic, metaphysics, semantics, game theory, information theory, artificial intelligence, and the philosophy of mind and cognition. However, possible worlds analyses have been facing numerous problems. This book traces them all back to hyperintensionality: the need for distinctions more fine-grained than the possible worlds apparatus can easily represent. It then introduces impossible worlds—ways things could not have been—as a general tool for modelling hyperintensional phenomena. The book discusses the metaphysics of impossible worlds and applies them to a range of central topics and open issues in logic, semantics, and philosophy: from the problem of logical omniscience in epistemic logic, to the semantics of non-classical logics, the modelling of imagination and mental simulation, the analysis of information and informative inference, truth in fiction, and counterpossible reasoning.
dc.publisherOxford University Press
dc.rights© Francesco Berto and Mark Jago 2019. This is an open access publication, available online and distributed under the terms of a Creative Commons Attribution–Non Commercial–No Derivatives 4.0 International licence (CC BY-NC-ND 4.0), a copy of which is available at
dc.subjectImpossible worldsen
dc.subjectEpistemic logicen
dc.subjectLogical omiscienceen
dc.subjectNon-classical logicen
dc.subjectCounterpossible reasoningen
dc.subjectBC Logicen
dc.subjectP Language and Literatureen
dc.titleImpossible worldsen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.Philosophyen

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