Berto and Jago question how to understand the impossible without collapsing into total incoherence. By considering the metaphysics of impossible worlds - and applying this concept to issues in logic, semantics, and philosophy - they offer a framework for obtaining a metaphysical, logical, and conceptual grasp of situations that simply cannot be.

• Introduction


• Part I: Impossibilities


• 1: From Possible to Impossible Worlds


• 2: Metaphysics


• 3: Ersatz Modal Realism


• Part II: Logical Applications


• 4: Modal Logics


• 5: Epistemic Logics


• 6: Relevant Logics


• 7: The Logic of Imagination


• Part III: Philosophical Applications


• 8: Hyperintensionality


• 9: Information and Content


• 10: Epistemic and Doxastic Contents


• 11: Fiction and Fictional Objects


• 12: Counterpossible Conditionals

Francesco Berto is Professor of Logic and Metaphysics at the University of St Andrews and Research Chair at the Institute for Logic, Language and Computation (ILLC) at the University of Amsterdam. He has also worked at the Universities of Notre Dame, Aberdeen, Padua, Venice, Lugano, and at the Sorbonne-Ecole Normale Supérieure of Paris. He works on ontology, logic, epistemology, and the philosophy of computation.
Mark Jago is an Associate Professor in Philosophy at the University of Nottingham. Before that, he was a postdoctoral fellow at Macquarie University in Sydney, Australia. He mainly writes on metaphysics, logic, epistemology, and philosophy of language. His previous books are The Impossible (Oxford 2014), Reality Making (Oxford 2016, as editor), and What Truth Is (Oxford 2018).