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Richard Dietz
University of Tokyo
  1. Vagueness: A Conceptual Spaces Approach.Igor Douven, Lieven Decock, Richard Dietz & Paul Égré - 2013 - Journal of Philosophical Logic 42 (1):137-160.
    The conceptual spaces approach has recently emerged as a novel account of concepts. Its guiding idea is that concepts can be represented geometrically, by means of metrical spaces. While it is generally recognized that many of our concepts are vague, the question of how to model vagueness in the conceptual spaces approach has not been addressed so far, even though the answer is far from straightforward. The present paper aims to fill this lacuna.
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  2. Epistemic Modals and Correct Disagreement.Richard Dietz - 2008 - In G. Carpintero & M. Koelbel (eds.), Relative Truth. Oxford University Press. pp. 239--264.
  3. A Puzzle About Stalnaker’s Hypothesis.Igor Douven & Richard Dietz - 2011 - Topoi 30 (1):31-37.
    According to Stalnaker’s Hypothesis, the probability of an indicative conditional, $\Pr(\varphi \rightarrow \psi),$ equals the probability of the consequent conditional on its antecedent, $\Pr(\psi | \varphi)$ . While the hypothesis is generally taken to have been conclusively refuted by Lewis’ and others’ triviality arguments, its descriptive adequacy has been confirmed in many experimental studies. In this paper, we consider some possible ways of resolving the apparent tension between the analytical and the empirical results relating to Stalnaker’s Hypothesis and we argue (...)
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  4. Ramsey’s Test, Adams’ Thesis, and Left-Nested Conditionals.Richard Dietz & Igor Douven - 2010 - Review of Symbolic Logic 3 (3):467-484.
    Adams famously suggested that the acceptability of any indicative conditional whose antecedent and consequent are both factive sentences amounts to the subjective conditional probability of the consequent given the antecedent. The received view has it that this thesis offers an adequate partial explication of Ramsey’s test, which characterizes graded acceptability for conditionals in terms of hypothetical updates on the antecedent. Some results in van Fraassen may raise hope that this explicatory approach to Ramsey’s test is extendible to left-nested conditionals, that (...)
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  5.  94
    Cuts and Clouds: Vagueness, its Nature, and its Logic.Richard Dietz & Sebastiano Moruzzi (eds.) - 2009 - Oxford University Press.
    Vagueness is a familiar but deeply puzzling aspect of the relation between language and the world. It is highly controversial what the nature of vagueness is -- a feature of the way we represent reality in language, or rather a feature of reality itself? May even relations like identity or parthood be affected by vagueness? Sorites arguments suggest that vague terms are either inconsistent or have a sharp boundary. The account we give of such paradoxes plays a pivotal role for (...)
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  6. Comparative Concepts.Richard Dietz - 2013 - Synthese 190 (1):139-170.
    Comparative concepts such as greener than or higher than are ways of ordering objects. They are fundamental to our grasp of gradable concepts, that is, the type of meanings expressed by gradable general terms, such as "is green" or "is high", which are embeddable in comparative constructions in natural language. Some comparative concepts seem natural, whereas others seem gerrymandered. The aim of this paper is to outline a theoretical approach to comparative concepts that bears both on the account of naturalness (...)
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  7. Modelling Comparative Concepts in Conceptual Spaces.Lieven Decock, Richard Dietz & Igor Douven - 2013 - In Y. Motomura, Y. Butler & D. Bekki (eds.), New Frontiers in Artificial Intelligence, LNAI 7856. Springer. pp. 69-86.
  8. Coming True: A Note on Truth and Actuality.Richard Dietz & Julien Murzi - 2013 - Philosophical Studies 163 (2):403-427.
    John MacFarlane has recently presented a novel argument in support of truth- relativism. According to this, contextualists fail to accommodate retrospective reassessments of propositional contents, when it comes to languages which are rich enough to express actuality. The aim of this note is twofold. First, it is to argue that the argument can be effectively rejected, since it rests on an inadequate conception of actuality. Second, it is to offer a more plausible account of actuality in branching time, along the (...)
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    Betting on Borderline Cases.Richard Dietz - 2008 - Philosophical Perspectives 22 (1):47-88.
  10.  31
    Vagueness and Probability: Introduction.Richard Dietz - 2017 - Synthese 194 (10):3693-3698.
    This introduction provides some background to the contributions to this volume.
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    On Generalizing Kolmogorov.Richard Dietz - 2010 - Notre Dame Journal of Formal Logic 51 (3):323-335.
    In his "From classical to constructive probability," Weatherson offers a generalization of Kolmogorov's axioms of classical probability that is neutral regarding the logic for the object-language. Weatherson's generalized notion of probability can hardly be regarded as adequate, as the example of supervaluationist logic shows. At least, if we model credences as betting rates, the Dutch-Book argument strategy does not support Weatherson's notion of supervaluationist probability, but various alternatives. Depending on whether supervaluationist bets are specified as (a) conditional bets (Cantwell), (b) (...)
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  12. (2010) ‘Scope Confusions and Unsatisfiable Disjuncts: Two Problems for Supervaluation- Ism’, in Eds., Cuts and Clouds: Vaguenesss, Its Nature, and Its Logic,.Richard Dietz & Sebastiano Moruzzi (eds.) - 2010 - Oxford University Press.
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  13. Vagueness and Rationality.Richard Dietz (ed.) - forthcoming - Springer.
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