Ways Things Can't Be
Notre Dame Journal of Formal Logic 38 (4):583-596 (1997)
| Abstract | Possible worlds semantics has been very useful in modeling not only the intensionality of necessity and possibility, future and past. It has also found its place in modeling the intentionality of propositional attitudes like belief and knowledge. There is something fruitful in analyzing a belief as a set of possible worlds. The belief is the set of possible worlds in which the belief is true. The belief is true if and only if the actual world is in the corresponding set of propositions. The possible worlds in the set corresponding to the belief represent how the agent per- ceives the world to be. If the belief is false, then the world isn’t how the agent sees the world to be, and so the actual world isn’t in the set of worlds corresponding to the belief (see Lewis [4] and Stalnaker [9]). The same can be said of whole belief states just as much as it can be said of individual beliefs. My belief state is the set of worlds consistent with what I believe. This view has been very fruitful, not least because the set-theoretic structure of sets of possible worlds corresponds nicely with the logical structure of entailment relations among propositions and the behavior of propositional connectives like conjunction, disjunction, and negation. However, the story does not deal well with inconsistent belief. Inconsistent beliefs are true in no possible worlds, so they are each modeled by the same set of worlds—the empty set. My beliefs are often inconsistent, and so are those of many.. | |||||||||
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Maxwell J. Cresswell (2006). From Modal Discourse to Possible Worlds. Studia Logica 82 (3):307 - 327.
Phillip Bricker (2006). Absolute Actuality and the Plurality of Worlds. Philosophical Perspectives 20 (1):41–76.
Philip Robbins (2004). To Structure, or Not to Structure? Synthese 139 (1):55-80.
Ari Maunu (2003). No Belief Is Contingently True. Auslegung 26 (2):67-75.
Nir Friedman & Joseph Y. Halpern (1999). Belief Revision: A Critique. Journal of Logic, Language and Information 8 (4):401-420.
John Cantwell (2006). A Formal Model of Multi-Agent Belief-Interaction. Journal of Logic, Language and Information 15 (4).
John Cantwell (2005). A Formal Model of Multi-Agent Belief-Interaction. Journal of Logic, Language and Information 14 (4).
Pierpaolo Battigalli & Giacomo Bonanno (1997). The Logic of Belief Persistence. Economics and Philosophy 13 (01):39-.
Berit Brogaard (2010). Centered Worlds and the Content of Perception: Short Version. In David Sosa (ed.), Philosophical Books (Analytic Philosophy).
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