Informational dynamics of epistemic possibility modals.

We investigate, in a logical setting, the expressivist proposal that assertion primarily functions to express and coordinate doxastic states and that ‘might’ fundamentally expresses lack of belief. We provide a formal model of an agent’s doxastic state and novel assertability conditions for an assoc...

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Publicado en:Synthese Vol. 195; no. 10; pp. 4309 - 4343
Autores principales: Hawke, Peter, Steinert-Threlkeld, Shane
Formato: Artículo
Publicado: Springer Nature Oct2018
Materias:
Acceso en línea:Ver este registro en EBSCOhost
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        10.1007/s11229-016-1216-8
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        atl: Informational dynamics of epistemic possibility modals.
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        au:
          Hawke, Peter
          Steinert-Threlkeld, Shane
        affil: Philosophy Department, Stanford University, 450 Serra Mall, 94305, Stanford, CA, USA
      su:
        Epistemic logic
        Modal logic
        Assertions (Logic)
        Epistemics
        Semantics
      sug:
        subj:
          Epistemic logic
          Modal logic
          Assertions (Logic)
          Epistemics
          Semantics
      keyword:
        Assertability logic
        Assertion
        Doxastic update
        Epistemic modality
        Epistemic possibility
        Information dynamics
      ab: We investigate, in a logical setting, the expressivist proposal that assertion primarily functions to express and coordinate doxastic states and that ‘might’ fundamentally expresses lack of belief. We provide a formal model of an agent’s doxastic state and novel assertability conditions for an associated formal language. We thereby prove that an arbitrary assertion (including a complex of ‘might’ and ‘factual’ claims) always succeeds in expressing a well-defined (partial) doxastic state, and propose a fully general and intuitive update operation as a model of an agent coming to accept an arbitrary assertion. Leaving a comprehensive philosophical and linguistic defense for elsewhere, we explore technical aspects of our framework, providing, for instance, a complete logic of assertability and reduction axioms for the novel update operations related to our proposal. Finally, we contrast our work with related proposals in the logic literature.
      pubtype: Academic Journal
      doctype: Article
      src: R
    language: English
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          year: 2018
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