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Ian Rumfitt [58]Ian Patrick Rumfitt [1]
  1.  46
    The Boundary Stones of Thought: An Essay in the Philosophy of Logic.Ian Rumfitt - 2015 - Oxford, England: Oxford University Press.
    Classical logic has been attacked by adherents of rival, anti-realist logical systems: Ian Rumfitt comes to its defence. He considers the nature of logic, and how to arbitrate between different logics. He argues that classical logic may dispense with the principle of bivalence, and may thus be liberated from the dead hand of classical semantics.
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  2. Savoir Faire.Ian Rumfitt - 2003 - Journal of Philosophy 100 (3):158-166.
    This paper challenges the linguistic arguments Jason Stanley and Timothy Williamson gave in support of their thesis that knowing how is a species of knowing that.
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  3. Plural terms : Another variety of reference?Ian Rumfitt - 2005 - In José Luis Bermúdez (ed.), Thought, reference, and experience: themes from the philosophy of Gareth Evans. New York : Oxford University Press: Clarendon Press. pp. 84--123.
  4. Intuitionism and the Modal Logic of Vagueness.Susanne Bobzien & Ian Rumfitt - 2020 - Journal of Philosophical Logic 49 (2):221-248.
    Intuitionistic logic provides an elegant solution to the Sorites Paradox. Its acceptance has been hampered by two factors. First, the lack of an accepted semantics for languages containing vague terms has led even philosophers sympathetic to intuitionism to complain that no explanation has been given of why intuitionistic logic is the correct logic for such languages. Second, switching from classical to intuitionistic logic, while it may help with the Sorites, does not appear to offer any advantages when dealing with the (...)
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  5. Knowledge by deduction.Ian Rumfitt - 2008 - Grazer Philosophische Studien 77 (1):61-84.
    It seems beyond doubt that a thinker can come to know a conclusion by deducing it from premisses that he knows already, but philosophers have found it puzzling how a thinker could acquire knowledge in this way. Assuming a broadly externalist conception of knowledge, I explain why judgements competently deduced from known premisses are themselves knowledgeable. Assuming an exclusionary conception of judgeable content, I further explain how such judgements can be informative. (According to the exclusionary conception, which I develop from (...)
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  6. Content and context: The paratactic theory revisited and revised.Ian Rumfitt - 1993 - Mind 102 (407):429-454.
  7.  61
    In defence of PKF.Ian Rumfitt - 2023 - Synthese 201 (2):1-21.
    I advance arguments in favour of PKF as an articulation of a central sense of the predicate ‘true’, and show how it illuminates the relationship between that sense and the ‘external’ notion of truth found in such claims as ‘An utterance of the Liar Sentence does not say anything, and so is not true’.
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  8. Truth conditions and communication.Ian Rumfitt - 1995 - Mind 104 (416):827-862.
    The paper addresses itself to the "Homeric struggle" in the theory of meaning between those (e.g., Grice) who try to analyze declarative meaning in terms of an intention to induce a belief and those (e.g., Davidson) for who declarative meaning consists in truth conditions. (The point of departure is Strawson's celebrated discussion of this issue, in his Inaugural Lecture.) I argue that neither style of analysis is satisfactory, and develop a "hybrid" that may be-although what I take from the Gricean (...)
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  9.  88
    (1 other version)I—Ian Rumfitt: Truth and Meaning.Ian Rumfitt - 2014 - Aristotelian Society Supplementary Volume 88 (1):21-55.
    Should we explicate truth in terms of meaning, or meaning in terms of truth? Ramsey, Prior and Strawson all favoured the former approach: a statement is true if and only if things are as the speaker, in making the statement, states them to be; similarly, a belief is true if and only if things are as a thinker with that belief thereby believes them to be. I defend this explication of truth against a range of objections.Ramsey formalized this account of (...)
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  10. Logical Necessity.Ian Rumfitt - 2010 - In Bob Hale & Aviv Hoffmann (eds.), Modality: metaphysics, logic, and epistemology. qnew York: Oxford University Press.
    Book synopsis: The philosophy of modality investigates necessity and possibility, and related notions--are they objective features of mind-independent reality? If so, are they irreducible, or can modal facts be explained in other terms? This volume presents new work on modality by established leaders in the field and by up-and-coming philosophers. Between them, the papers address fundamental questions concerning realism and anti-realism about modality, the nature and basis of facts about what is possible and what is necessary, the nature of modal (...)
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  11. Frege's theory of predication: An elaboration and defense, with some new applications.Ian Rumfitt - 1994 - Philosophical Review 103 (4):599-637.
  12. (1 other version)Inference, Deduction, Logic.Ian Rumfitt - 2011 - In John Bengson & Marc A. Moffett (eds.), Knowing How: Essays on Knowledge, Mind, and Action. Oxford, England: Oxford University Press USA. pp. 334.
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  13.  26
    The categoricity problem and truth-value gaps.Ian Rumfitt - 1997 - Analysis 57 (4):223-235.
    In his article 'Rejection' (1996), Timothy Smiley had shown how a logical system allowing rules of rejection could provide a categorical axiomatization of the classical propositional calculus. This paper shows how rules of rejection, when placed in a multiple conclusion setting, can also provide categorical axiomatizations of a range of non-classical calculi which permit truth-value gaps, among them the calculus in Smiley's own 'Sense without denotation' (1960).
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  14.  55
    Donald Davidson and the Mirror of Meaning.Ian Rumfitt & J. E. Malpas - 1995 - Philosophical Quarterly 45 (178):136.
    Review of J.E. Malpas, *Donald Davidson and the Mirror of Meaning* (CUP).
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  15. Unilateralism disarmed: A reply to Dummett and Gibbard.Ian Rumfitt - 2002 - Mind 111 (442):305-322.
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  16. Co-ordination principles: A reply.Ian Rumfitt - 2008 - Mind 117 (468):1059-1063.
    I explain why Fernando Ferreira's interesting formal result does not threaten the bilateralist account of the sense of the connectives.
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  17. Singular terms and arithmetical logicism.Ian Rumfitt - 2003 - Philosophical Books 44 (3):193--219.
    This article is a critical notice of Bob Hale and Crispin Wright's *The Reason's Proper Study* (OUP). It focuses particularly on their attempts (crucial to their neo-logicist project) to say what a singular term is. I identify problems for their account but include some constructive suggestions about how it might be improved.
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  18. (1 other version)Objects of Thought.Ian Rumfitt - 2016 - In Gary Ostertag (ed.), Meanings and Other Things: Themes From the Work of Stephen Schiffer. Oxford, England: Oxford University Press.
    In his book The Things We Mean, Stephen Schiffer advances a subtle defence of what he calls the ‘face-value’ analysis of attributions of belief and reports of speech. Under this analysis, ‘Harold believes that there is life on Venus’ expresses a relation between Harold and a certain abstract object, the proposition that there is life on Venus. The present essay first proposes an improvement to Schiffer’s ‘pleonastic’ theory of propositions. It then challenges the face-value analysis. There will be such things (...)
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  19.  39
    Truth, Marks of Truth, and Conditionals.Ian Rumfitt - 2022 - Philosophy 97 (3):295-320.
    This essay assesses the account of truth presented in Wiggins's 2002 paper ‘An indefinibilist cum normative view of truth and the marks of truth'. I agree with Wiggins that we should seek, not to define truth, but to elucidate it by unfolding its connections with other basic notions. However, I give reasons for preferring an elucidation based on Ramsey's account of truth to Wiggins's Tarski-inspired approach. I also cast doubt on Wiggins's thesis that convergence is a mark of truth, arguing (...)
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  20. Plural terms: another variety of referring expression?Ian Rumfitt - 2005 - In José Luis Bermúdez (ed.), Thought, reference, and experience: themes from the philosophy of Gareth Evans. New York : Oxford University Press: Clarendon Press.
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  21. Old Adams Buried.Ian Rumfitt - 2013 - Analytic Philosophy 54 (2):157-188.
    I present some counterexamples to Adams's Thesis and explain how they undermine arguments that indicative conditionals cannot be truth-evaluable propositions.
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  22. Contingent existents.Ian Rumfitt - 2003 - Philosophy 78 (4):461-481.
    Timothy Williamson has recently put forward a proof that every object exists necessarily. I show where the proof fails. My diagnosis also exposes the fallacy in A. N. Prior's argument in favour of his modal logic, Q.
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  23. On A Neglected Path to Intuitionism.Ian Rumfitt - 2012 - Topoi 31 (1):101-109.
    According to Quine, in any disagreement over basic logical laws the contesting parties must mean different things by the connectives or quantifiers implicated in those laws; when a deviant logician ‘tries to deny the doctrine he only changes the subject’. The standard semantics for intuitionism offers some confirmation for this thesis, for it represents an intuitionist as attaching quite different senses to the connectives than does a classical logician. All the same, I think Quine was wrong, even about the dispute (...)
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  24. Neo-Fregeanism and the Burali-Forti Paradox.Ian Rumfitt - 2018 - In Ivette Fred Rivera & Jessica Leech (eds.), Being Necessary: Themes of Ontology and Modality from the Work of Bob Hale. Oxford, England: Oxford University Press. pp. 188-223.
    Philip Jourdain put this question to Frege in a letter of 28 January 1909. Frege had, indeed, next to nothing to say about ordinals, and in this respect Bob Hale has followed the master. As I hope this chapter will show, though, the topic is worth addressing. The natural abstraction principle for ordinals combines with full, impredicative second-order logic to engender a contradiction, the so-called Burali-Forti Paradox. I shall contend that the best solution involves a retreat to a predicative logic. (...)
     
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  25. Semantic theory and necessary truth.Ian Rumfitt - 2001 - Synthese 126 (1-2):283 - 324.
  26.  91
    Truth wronged: Crispin Wright's truth and objectivity.Ian Rumfitt - 1995 - Ratio 8 (1):100-107.
  27.  12
    Infinitesimals, Nations, and Persons.Ian Rumfitt - 2019 - Philosophy 94 (4):513-528.
    I compare three sorts of case in which philosophers have argued that we cannot assert the Law of Excluded Middle for statements of identity. Adherents of Smooth Infinitesimal Analysis deny that Excluded Middle holds for statements saying that an infinitesimal is identical with zero. Derek Parfit contended that, in certain sci-fi scenarios, the Law does not hold for some statements of personal identity. He also claimed that it fails for the statement ‘England in 1065 was the same nation as England (...)
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  28.  31
    Generalized Quantification in an Axiomatic Truth Theory.Ian Rumfitt - 2024 - Australasian Journal of Philosophy 102 (3):756-776.
    Bruno Whittle (2019) has recently extended Kripke’s semantical theory of truth to languages containing generalized quantifiers. There are reasons for axiomatizing semantical theories, and for regarding Halbach and Horsten’s PKF as a good axiomatization of Kripke’s. PKF is a theory in Partial Logic. The present paper complements Whittle’s by showing how Partial Logic, and then PKF, may be extended to cover binary quantifiers meaning ‘every’, ‘some’, and ‘most’.
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  29. (1 other version)Against Harmony.Ian Rumfitt - 1995 - In B. Hale & Crispin Wright (eds.), Blackwell Companion to the Philosophy of Language. Blackwell.
    Many prominent writers on the philosophy of logic, including Michael Dummett, Dag Prawitz, Neil Tennant, have held that the introduction and elimination rules of a logical connective must be ‘in harmony ’ if the connective is to possess a sense. This Harmony Thesis has been used to justify the choice of logic: in particular, supposed violations of it by the classical rules for negation have been the basis for arguments for switching from classical to intuitionistic logic. The Thesis has also (...)
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  30. Tempered pragmatism.Ian Rumfitt - 2016 - In Cheryl Misak & Huw Price (eds.), The Practical Turn: Pragmatism in Britain in the Long Twentieth Century. Oxford: Oup/Ba.
    This paper assesses the prospects of a pragmatist theory of content. I begin by criticising the theory presented in D.H. Mellor’s essay ‘Successful Semantics’. I then identify problems and lacunae in the pragmatist theory of meaning sketched in Chapter 13 of Dummett’s The Logical Basis of Metaphysics. The prospects are brighter, I contend, for a tempered pragmatism, in which the theory of content is permitted to draw upon irreducible notions of truth and falsity. I sketch the shape of such a (...)
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  31.  89
    Hume's principle and the number of all objects.Ian Rumfitt - 2001 - Noûs 35 (4):515–541.
  32.  52
    Concepts and Counting.Ian Rumfitt - 2002 - Proceedings of the Aristotelian Society 102 (1):41-68.
    Frege's analysis of Zahlangaben is expounded and evaluated.
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  33.  60
    Reply to Crispin Wright and Richard Zach.Ian Rumfitt - 2018 - Philosophical Studies 175 (8):2091-2103.
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  34. Ricky ponting and the judges.Ian Rumfitt - 2010 - Analysis 70 (2):205-210.
    This article proposes revisions to the Laws of Cricket and to the criminal law of England. The Laws of Cricket should be revised so that an umpire may give a batsman out without having to specify precisely how he got out. The criminal law should be revised so that (e.g.) aiding and abetting a murderer is not subsumed under the crime of murder.
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  35.  55
    Truth and the determination of content: Variations on themes from frege’s.Ian Rumfitt - 2011 - Grazer Philosophische Studien 82 (1):1-48.
  36. Vagueness and Intuitionistic Logic.Ian Rumfitt - forthcoming - In Alexander Miller (ed.), Language, Logic,and Mathematics: Themes from the Philosophy of Crispin Wright. Oxford University Press.
    In his essay ‘“Wang’s Paradox”’, Crispin Wright proposes a solution to the Sorites Paradox (in particular, the form of it he calls the ‘Paradox of Sharp Boundaries’) that involves adopting intuitionistic logic when reasoning with vague predicates. He does not give a semantic theory which accounts for the validity of intuitionistic logic (and the invalidity of stronger logics) in that area. The present essay tentatively makes good the deficiency. By applying a theorem of Tarski, it shows that intuitionistic logic is (...)
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  37. Sentences, names and semantic values.Ian Rumfitt - 1996 - Philosophical Quarterly 46 (182):66-72.
  38.  45
    Brouwer Wittgenstein on the Infinite and the Law of Excluded Middle.Ian Rumfitt - 2014 - Grazer Philosophische Studien 89 (1):93-108.
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  39.  64
    Structure of Truth: The 1970 John Locke Lectures, by Donald Davidson, edited with an introduction by Cameron Domenico Kirk-Giannini and Ernie Lepore.Ian Rumfitt - 2022 - Mind 131 (523):1025-1036.
    When I was a student in the mid-1980s, Donald Davidson loomed larger over the philosophical scene than any other living thinker. His writings figured prominentl.
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  40.  35
    What is Logic?Ian Rumfitt - 2010 - In Zsolt Novák & András Simonyi (eds.), Truth, reference, and realism. New York: Central European University Press. pp. 125-176.
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  41. Sense and Evidence.Ian Rumfitt - 2013 - The Monist 96 (2):177-204.
    There are many theories which say how the truth-value (the Fregean reference) of a complete sentence depends on the references of its parts. The present paper proposes a theory of how the Fregean sense of a sentences depends on the senses of its parts. A sentence's sense is related to the evidence that would justify its assertion. The theory characterizes the senses of 'and', 'or', 'not', and 'if...then'.
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  42.  63
    Reply to Øystein Linnebo and Stewart Shapiro.Ian Rumfitt - 2019 - Inquiry: An Interdisciplinary Journal of Philosophy 62 (7):842-858.
    ABSTRACTIn reply to Linnebo, I defend my analysis of Tait's argument against the use of classical logic in set theory, and make some preliminary comments on Linnebo's new argument for the same conclusion. I then turn to Shapiro's discussion of intuitionistic analysis and of Smooth Infinitesimal Analysis. I contend that we can make sense of intuitionistic analysis, but only by attaching deviant meanings to the connectives. Whether anyone can make sense of SIA is open to doubt: doing so would involve (...)
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  43.  24
    Dummett Laudatio.Ian Rumfitt - 2017 - In Michael Frauchiger (ed.), Truth, Meaning, Justification, and Reality: Themes From Dummett. Boston: De Gruyter. pp. 13-24.
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  44.  21
    (2 other versions)Frege's Logicism.Ian Rumfitt - 1999 - Aristotelian Society Supplementary Volume 73 (1):151-180.
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  45. Meaning and understanding.Ian Rumfitt - 2005 - In Frank Jackson & Michael Smith (eds.), The Oxford Handbook of Contemporary Philosophy. New York: Oxford University Press UK.
     
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  46.  21
    Prospects for Justificationism.Ian Rumfitt - 2017 - In Michael Frauchiger (ed.), Truth, Meaning, Justification, and Reality: Themes From Dummett. Boston: De Gruyter. pp. 123-152.
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  47.  36
    Précis of The Boundary Stones of Thought.Ian Rumfitt - 2018 - Philosophical Studies 175 (8):2063-2066.
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  48.  41
    (1 other version)Structures and Categories for the Representation of Meaning.Ian Rumfitt & Timothy C. Potts - 1996 - Philosophical Review 105 (2):264.
    Review of Timothy Potts, *Structures and Categories for the Representation of Meaning* (CUP).
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  49.  20
    The vagaries of paraphrase: a reply to Holton on the counting problem.Ian Rumfitt - 1996 - Analysis 56 (4):246-250.
    In his 'paratactic' analysis of indirect speech reports, Davidson took the occurrence of 'that' in 'Galileo said that the Earth moves' to be a demonstrative expression which refers to the reporter's subsequent utterance of 'the Earth moves'. Ian McFetridge used his 'counting problem' to argue that we get a better version of the paratactic theory if we take the demonstrative 'that' to refer to the proposition expressed by the reporter's utterance, rather than to the utterance itself. In this note, I (...)
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  50.  53
    Making it Explicit: Reasoning, Representing, and Discursive Commitment. [REVIEW]Ian Rumfitt - 1997 - Philosophical Review 106 (3):437.
    In developing his alternative, Brandom starts from a version of inferential-role semantics according to which an assertion's content is constituted by its place in a field of inferential relations. It is because we have "an independent theoretical grip on the notion of an inference", and of its goodness or badness, that we are able to attain a notion of content that is prior to any of the representational concepts. He stresses that the relevant assessment of inferences is not whether they (...)
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