TY - GEN AU - Berto,Francesco AU - Jago,Mark TI - Impossible Worlds SN - 0198812795.001.0001 PY - 2019/// CY - Oxford, UK PB - Oxford University Press KW - Philosophy: metaphysics & ontology KW - bicssc KW - Philosophy: logic KW - Hyperintensionality KW - Impossible worlds KW - Metaphysics KW - Epistemic logic KW - Logical omniscience KW - Imagination KW - Information KW - Non-classical logic KW - Fiction KW - Counterpossible reasoning N1 - Open Access N2 - The latter half of the 20th 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 modeling of imagination and mental simulation, the analysis of information and informative inference, truth in fiction, and counterpossible reasoning. The latter half of the 20th 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 modeling of imagination and mental simulation, the analysis of information and informative inference, truth in fiction, and counterpossible reasoning UR - https://library.oapen.org/bitstream/20.500.12657/25055/1/9780198812791_Impossible%20Worlds.pdf UR - https://library.oapen.org/bitstream/20.500.12657/25055/1/9780198812791_Impossible%20Worlds.pdf UR - https://library.oapen.org/bitstream/20.500.12657/25055/1/9780198812791_Impossible%20Worlds.pdf UR - https://directory.doabooks.org/handle/20.500.12854/30581 ER -