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  1. added 2019-06-05
    On the Factivity of Implicit Intersubjective Knowledge.Alessandro Giordani - 2014 - Synthese 191 (8):1909-1923.
    The concept of knowledge can be modelled in epistemic modal logic and, if modelled by using a standard modal operator, it is subject to the problem of logical omniscience. The classical solution to this problem is to distinguish between implicit and explicit knowledge and to construe the knowledge operator as capturing the concept of implicit knowledge. In addition, since a proposition is said to be implicitly known just in case it is derivable from the set of propositions that are explicitly (...)
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  2. added 2019-05-13
    Modal Epistemology.Juhani Yli-Vakkuri & John Hawthorne - manuscript
    Some central epistemological notions are expressed by sentential operators O that entail the possibility of knowledge in the sense that 'Op' entails 'It is possible to know that p'. We call these modal-epistemological notions. Using apriority and being in a position to know as case studies, we argue that the logics of modal epistemological notions are extremely weak. In particular, their logics are not normal and do not include any closure principles.
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  3. added 2019-03-09
    Three Epistemic Paralogisms, One Logic of Utterances.Fabien Schang - 2010 - In P.-E. Bour & M. Rebuschi & L. Rollet (ed.), Construction. Festschrift for Gerhard Heinzmann. pp. 407-416.
    Assuming that a paralogism is an unintentionally invalid reasoning, we give an exampli.
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  4. added 2019-03-09
    Philosophie des modalités épistémiques (la logique assertorique revisitée).Fabien Schang - 2007 - Dissertation, Nancy Université
    The relevance of any logical analysis lies in its ability to solve paradoxes and trace conceptual troubles back; with this respect, the task of epistemic logic is to handle paradoxes in connection with the concept of knowledge. Epistemic logic is currently introduced as the logical analysis of crucial concepts within epistemology, namely: knowledge, belief, truth, and justification. An alternative approach will be advanced here in order to enlighten such a discourse, as centred upon the word assertion and displayed in terms (...)
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  5. added 2019-02-08
    Disappearing Diamonds: Fitch-Like Results in Bimodal Logic.Weng Kin San - forthcoming - Journal of Philosophical Logic:1-14.
    Augment the propositional language with two modal operators: □ and ■. Define \ to be the dual of ■, i.e. \. Whenever is of the form φ → ψ, let ) be \. ) can be thought of as the modally qualified counterpart of —for instance, under the metaphysical interpretation of \, where says φ implies ψ, ) says φ implies possiblyψ. This paper shows that for various interesting instances of, fairly weak assumptions suffice for ) to imply —so, the (...)
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  6. added 2019-01-17
    Counterfactual Knowability Revisited.Julian J. Schlöder - forthcoming - Synthese:1-15.
    Anti-realism is plagued by Fitch’s paradox: the remarkable result that if one accepts that all truths are knowable, minimal assumptions about the nature of knowledge entail that every truth is known. Dorothy Edgington suggests to address this problem by understanding p is knowable to be a counterfactual claim, but her proposal must contend with a forceful objection by Timothy Williamson. I revisit Edgington’s basic idea and find that Williamson’s objection is obviated by a refined understanding of counterfactual knowability that is (...)
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  7. added 2018-09-06
    Science Generates Limit Paradoxes.Eric Dietrich & Chris Fields - 2015 - Axiomathes 25 (4):409-432.
    The sciences occasionally generate discoveries that undermine their own assumptions. Two such discoveries are characterized here: the discovery of apophenia by cognitive psychology and the discovery that physical systems cannot be locally bounded within quantum theory. It is shown that such discoveries have a common structure and that this common structure is an instance of Priest’s well-known Inclosure Schema. This demonstrates that science itself is dialetheic: it generates limit paradoxes. How science proceeds despite this fact is briefly discussed, as is (...)
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  8. added 2018-08-19
    Knowability Relative to Information.Peter Hawke & Franz Berto - forthcoming - Mind.
    We present a formal semantics for epistemic logic, capturing the notion of knowability relative to information (KRI). Like Dretske, we move from the platitude that what an agent can know depends on her (empirical) information. We treat operators of the form K_AB (‘B is knowable on the basis of information A’) as variably strict quantifiers over worlds with a topic- or aboutness- preservation constraint. Variable strictness models the non-monotonicity of knowledge acquisition while allowing knowledge to be intrinsically stable. Aboutness-preservation models (...)
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  9. added 2017-10-14
    What Do Paraconsistent, Undecidable, Random, Computable and Incomplete Mean? A Review of Godel's Way: Exploits Into an Undecidable World by Gregory Chaitin, Francisco A Doria , Newton C.A. Da Costa 160p (2012).Michael Starks - 2017 - Philosophy, Human Nature and the Collapse of Civilization -- Articles and Reviews 2006-2017 3rd Ed 686p(2017).
    In ‘Godel’s Way’ three eminent scientists discuss issues such as undecidability, incompleteness, randomness, computability and paraconsistency. I approach these issues from the Wittgensteinian viewpoint that there are two basic issues which have completely different solutions. There are the scientific or empirical issues, which are facts about the world that need to be investigated observationally and philosophical issues as to how language can be used intelligibly (which include certain questions in mathematics and logic), which need to be decided by looking at (...)
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  10. added 2017-09-03
    Fitch's Paradox and the Problem of Shared Content.Thorsten Sander - 2006 - Abstracta 3 (1):74-86.
    According to the “paradox of knowability”, the moderate thesis that all truths are knowable – ‘∀p ’ – implies the seemingly preposterous claim that all truths are actually known – ‘∀p ’ –, i.e. that we are omniscient. If Fitch’s argument were successful, it would amount to a knockdown rebuttal of anti-realism by reductio. In the paper I defend the nowadays rather neglected strategy of intuitionistic revisionism. Employing only intuitionistically acceptable rules of inference, the conclusion of the argument is, firstly, (...)
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  11. added 2017-01-14
    On a New Tentative Solution to Fitch’s Paradox.Alessandro Giordani - 2016 - Erkenntnis 81 (3):597-611.
    In a recent paper, Alexander argues that relaxing the requirement that sound knowers know their own soundness might provide a solution to Fitch’s paradox and introduces a suitable axiomatic system where the paradox is avoided. In this paper an analysis of this solution is proposed according to which the effective move for solving the paradox depends on the axiomatic treatment of the ontic modality rather than the limitations imposed on the epistemic one. It is then shown that, once the ontic (...)
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  12. added 2016-09-15
    Kant, the Paradox of Knowability, and the Meaning of ‘Experience’.Andrew Stephenson - 2015 - Philosophers' Imprint 15.
    It is often claimed that anti-realism is a form of transcendental idealism or that Kant is an anti-realist. It is also often claimed that anti-realists are committed to some form of knowability principle and that such principles have problematic consequences. It is therefore natural to ask whether Kant is so committed, and if he is, whether this leads him into difficulties. I argue that a standard reading of Kant does indeed have him committed to the claim that all empirical truths (...)
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  13. added 2015-11-10
    Hope, Knowledge, and Blindspots.Jordan Dodd - 2017 - Synthese 194 (2):531-543.
    Roy Sorensen introduced the concept of an epistemic blindspot in the 1980s. A proposition is an epistemic blindspot for some individual at some time if and only if that proposition is consistent but unknowable by that individual at that time. In the first half of this paper, I extend Sorensen work on blindspots by arguing that there exist blindspots that essentially involve hopes. In the second half, I show how such blindspots can contribute to and impair different pursuits of self-understanding. (...)
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  14. added 2015-11-07
    Epistemic Theories of Truth: The Justifiability Paradox Investigated.Vincent C. Müller & Christian Stein - 1996 - In C. Martínez Vidal, U. Rivas Monroy & L. Villegas Forero (eds.), Verdad: Lógica, Representatión y Mundo. Universidade de Santiago de Compostela. pp. 95-104.
    Epistemic theories of truth, such as those presumed to be typical for anti-realism, can be characterised as saying that what is true can be known in principle: p → ◊Kp. However, with statements of the form “p & ¬Kp”, a contradiction arises if they are both true and known. Analysis of the nature of the paradox shows that such statements refute epistemic theories of truth only if the the anti-realist motivation for epistemic theories of truth is not taken into account. (...)
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  15. added 2014-04-02
    Chalmers' Blueprint of the World.Panu Raatikainen - 2014 - International Journal of Philosophical Studies 22 (1):113-128.
    A critical notice of David J. Chalmers, Constructing the World (Oxford University Press,2012).
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  16. added 2014-03-21
    Conceptions of Truth in Intuitionism.Panu Raatikainen - 2004 - History and Philosophy of Logic 25 (2):131--45.
    Intuitionism’s disagreement with classical logic is standardly based on its specific understanding of truth. But different intuitionists have actually explicated the notion of truth in fundamentally different ways. These are considered systematically and separately, and evaluated critically. It is argued that each account faces difficult problems. They all either have implausible consequences or are viciously circular.
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  17. added 2014-03-12
    Possible Girls.Neil Sinhababu - 2008 - Pacific Philosophical Quarterly 89 (2):254–260.
    I argue that if David Lewis’ modal realism is true, modal realists from different possible worlds can fall in love with each other. I offer a method for uniquely picking out possible people who are in love with us and not with our counterparts. Impossible lovers and trans-world love letters are considered. Anticipating objections, I argue that we can stand in the right kinds of relations to merely possible people to be in love with them and that ending a trans-world (...)
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  18. added 2013-03-08
    Constructing the World.David Chalmers - 2012 - Oxford University Press.
    Inspired by Rudolf Carnap's Der Logische Aufbau Der Welt, David J. Chalmers argues that the world can be constructed from a few basic elements. He develops a scrutability thesis saying that all truths about the world can be derived from basic truths and ideal reasoning. This thesis leads to many philosophical consequences: a broadly Fregean approach to meaning, an internalist approach to the contents of thought, and a reply to W. V. Quine's arguments against the analytic and the a priori. (...)
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  19. added 2012-05-11
    Fitch’s Paradox, Stumbling Block or Touchstone for Knowability.Bruno Maret - 2012 - Dissertation, Paris 1
    If we want to say that all truths are knowable Fitch’s Paradox leads us to conclude that all truths are known. Is it a real philosophical problem or a mere modeling problem? Is it possible to express the idea of knowability using modal logic? The Knowability Principle is expressed by the formula: if Phi is true then it is possible to know that Phi. But what is the meaning of possibility in this context? Using standard modal operators under what condition (...)
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  20. added 2011-08-05
    Review of New Essays on the Knowability Paradox. [REVIEW]Jens Christian Bjerring - 2012 - History and Philosophy of Logic 33 (1):101-104.
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  21. added 2010-03-11
    Closure on Knowability.Mark Jago - 2010 - Analysis 70 (4):648-659.
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  22. added 2009-07-23
    Situations, Truth and Knowability: A Situation-Theoretic Analysis of a Paradox by Fitch.Sten Lindström - 1997 - In Eva Ejerhed & Sten Lindström (eds.), Logic, Action and Cognition: Essays in Philosophical Logic. Kluwer Academic Publishers.
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