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Profile: Isaac Levi (Columbia University)
  1. Isaac Levi, Contraction and Informational Value.
    According to the approach made famous by Alchourrón, Gärdenfors and Makinson (1985), revision is a transformation K*h of a potential belief state K by adding h yielding another potential belief state.1 This AGM revision transformation is a composition of two other transformations: contraction and expansion. K*h = [K-~h]+h. This is the expansion by adding h of the contraction K-~h of K by removing ~h.
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  2. Isaac Levi (forthcoming). Assessing Accident Risks in US Commercial Nuclear Power Plants: Scientific Method and the Rasmussen Report. Social Research.
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  3. Isaac Levi (forthcoming). Four Types of Ignorance. Social Research.
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  4. Bernard Berofsky & Isaac Levi (2012). Foreword. Journal of Philosophy 109 (8-9):469-469.
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  5. Isaac Levi (2012). Deductive Closure. Synthese 186 (2):493-499.
    This is a brief review of issues over which Henry Kyburg and I differed concerning the requirement that full beliefs should be closed under deductive consequence.
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  6. Isaac Levi (2012). Pragmatism and Inquiry: Selected Essays. Oxford University Press.
    Corrigibilism without solidarity -- Inquiry, deliberation, and method -- Pragmatism and change of view -- Beware of syllogism : statistical reasoning and conjecturing according to Peirce -- Dewey's logic of inquiry -- Wayward naturalism : saving Dewey from himself -- Seeking truth -- The logic of consistency and the logic of truth -- Belief, doubt, and evidentialism -- Induction, abduction, and oracles -- Knowledge as true full belief.
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  7. Isaac Levi (2011). Knowledge as True Belief. In Erik J. Olson Sebastian Enqvist (ed.), Belief Revision Meets Philosophy of Science. Springer. 269--302.
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  8. Isaac Levi (2010). Dewey's Logic of Inquiry. In Molly Cochran (ed.), The Cambridge Companion to Dewey. Cambridge University Press. 80-100.
     
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  9. Isaac Levi (2010). Probability Logic, Logical Probability, and Inductive Support. Synthese 172 (1):97 - 118.
    This paper seeks to defend the following conclusions: The program advanced by Carnap and other necessarians for probability logic has little to recommend it except for one important point. Credal probability judgments ought to be adapted to changes in evidence or states of full belief in a principled manner in conformity with the inquirer’s confirmational commitments—except when the inquirer has good reason to modify his or her confirmational commitment. Probability logic ought to spell out the constraints on rationally coherent confirmational (...)
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  10. Isaac Levi (2009). Wayward Naturalism : Saving Dewey From Himself. In John R. Shook & Paul Kurtz (eds.), The Future of Naturalism. Humanity Books.
     
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  11. Isaac Levi (2008). Convexity and Separability in Representing Consensus. In Kaushik Basu & Ravi Kanbur (eds.), Arguments for a Better World: Essays in Honor of Amartya Sen: Volume I: Ethics, Welfare, and Measurement and Volume Ii: Society, Institutions, and Development. Oup Oxford.
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  12. Isaac Levi (2008). Why Rational Agents Should Not Be Liberal Maximizers. Canadian Journal of Philosophy 38 (S1):1-17.
    Hans Herzberger's 1973 essay 'Ordinal Preference and Rational Choice' is a classic milestone in the erosion of the idea that rational agents are maximizers of utility. By the time Herzberger wrote, many authors had replaced this claim with the thesis that rational agents are maximizers of preference. That is to say, it was assumed that at the moment of choice a rational agent has a weak ordering representing his or her preferences among the options available to the agent for choice (...)
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  13. Isaac Levi (2007). Identity and Conflict. Social Research: An International Quarterly 74 (1):25-50.
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  14. Horacio Arló-Costa & Isaac Levi (2006). Contraction: On the Decision-Theoretical Origins of Minimal Change and Entrenchment. Synthese 152 (1):129 - 154.
    We present a decision-theoretically motivated notion of contraction which, we claim, encodes the principles of minimal change and entrenchment. Contraction is seen as an operation whose goal is to minimize loses of informational value. The operation is also compatible with the principle that in contracting A one should preserve the sentences better entrenched than A (when the belief set contains A). Even when the principle of minimal change and the latter motivation for entrenchment figure prominently among the basic intuitions in (...)
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  15. Isaac Levi (2006). Symposium on “Cognition and Rationality: Part I” Minimal Rationality. [REVIEW] Mind and Society 5 (2):199-211.
    An argument is advanced to show why E-admissibility should be preferred over maximality as a principle of rational choice where rationality is understood as minimal rationality. Consideration is given to the distinction between second best and second worst options in three way choice that is ignored according to maximality. It is shown why the behavior exhibited in addressing the problems posed by Allais (Econometrica 21:503–546, 1952) and by Ellsberg (Q Econ 75:643–669, 1961) do not violate the independence postulate according to (...)
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  16. Isaac Levi (2006). Decisions and Revisions: Philosophical Essays on Knowledge and Value. Cambridge University Press.
    This is a collection of Isaac Levi’s philosophical papers. Over the period represented by the work here, Professor Levi has developed an interrelated set of views, in the tradition of Peirce and Dewey, on epistemology and the philosophy of science and social science. This focus has been on the problem of induction and the growth of knowledge, the foundations of probability and the theory of rational decision-making. His most important essays in these areas are assembled here, with an introduction setting (...)
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  17. Isaac Levi (2006). Inquiry, Deliberation, and Method. In John R. Shook & Joseph Margolis (eds.), A Companion to Pragmatism. Blackwell Pub..
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  18. Isaac Levi (2006). Obligation and Permission When There is a Second Best and When There is a Second Worst. Análisis Filosófico 26 (2):356-372.
    A comparison is made between the criterion of choice of E-admissibility I proposed in Levi, 1974 and elaborated in Levi, 1980 and 1986, and the ideas about norms elaborated by Alchourrón and Bulygin with an emphasis on the fact that choice cannot always be evaluated in terms of binary comparisons as the distinction between second worst and not second worst illustrates. Se establece una comparación entre el criterio de E-admisibilidad propuesto en Levi,1974 y elaborado en Levi,1980 y 1986 y las (...)
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  19. Isaac Levi (2006). Replies. In Erik J. Olsson (ed.), Knowledge and Inquiry: Essays on the Pragmatism of Isaac Levi. Cambridge University Press.
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  20. Horacio Arlo-Costa & Isaac Levi, Contraction: On the Decision Theoretical Origins of Minimal Change and Entrenchment.
    Horacio Arlo-Costa and Issac Levi. Contraction: On the Decision Theoretical Origins of Minimal Change and Entrenchment.
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  21. Isaac Levi (2004). Amartya Sen. Synthese 140 (1-2):61 - 67.
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  22. Isaac Levi (2004). 11 Beware of Syllogism: Statistical Reasoning and Conjecturing According to Peirce. In C. J. Misak (ed.), The Cambridge Companion to Peirce. Cambridge University Press. 257.
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  23. Isaac Levi (2004). Carol Rovane. Synthese 140 (1-2):199 - 206.
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  24. Isaac Levi (2004). Gaifman. Synthese 140 (1-2):121 - 134.
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  25. Isaac Levi (2004). Howard Stein. Synthese 140 (1-2):177 - 180.
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  26. Isaac Levi (2004). In Memoriam: Sidney Morgenbesser. Journal of Philosophy 101 (9):497 - 498.
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  27. Isaac Levi (2004). Inclusive Rationality. Journal of Philosophy 101 (5):255-276.
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  28. Isaac Levi (2004). Jaakko Hintikka. Synthese 140 (1-2):37 - 41.
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  29. Isaac Levi (2004). List and Pettit. Synthese 140 (1-2):237 - 242.
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  30. Isaac Levi (2004). Mild Contraction: Evaluating Loss of Information Due to Loss of Belief. Oxford University Press.
    Isaac Levi's new book develops further his pioneering work in formal epistemology, focusing on the problem of belief contraction, or how rationally to relinquish old beliefs. Levi offers the most penetrating analysis to date of this key question in epistemology, offering a completely new solution and explaining its relation to his earlier proposals. He mounts an argument in favor of the thesis that contracting a state of belief by giving up specific beliefs is to be evaluated in terms of the (...)
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  31. Isaac Levi (2004). Review: Inclusive Rationality. [REVIEW] Journal of Philosophy 101 (5):255 - 276.
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  32. Isaac Levi (2004). Schick. Synthese 140 (1-2):17 - 24.
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  33. Isaac Levi (2004). Seidenfeld. Synthese 140 (1-2):89 - 96.
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  34. Isaac Levi (2004). The Logic of Consistency and the Logic of Truth. Dialectica 58 (4):461–482.
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  35. Isaac Levi (2004). The Second Worst in Practical Conflict. In Peter Baumann & Monika Betzler (eds.), Practical Conflicts: New Philosophical Essays. Cambridge. 159.
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  36. Arthur C. Danto, Bernard Berofsky, Isaac Levi & Charles D. Parsons (2003). In Memoriam. Journal of Philosophy 100 (5):272-272.
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  37. Arthur C. Danto, Bernard Berofsky, Isaac Levi & Charles D. Parsons (2003). In Memoriam: James J. Walsh. Journal of Philosophy 100 (5):272 -.
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  38. Isaac Levi (2003). Contracting From Epistemic Hell is Routine. Synthese 135 (1):141 - 164.
    I respond to Erik Olsson's critique of my account of contraction frominconsistent belief states, by admitting that such contraction cannot be rationalized as adeliberate decision problem. It can, however, be rationalized as a routine designed prior toinadvertent expansion into inconsistency when the deliberating agent embraces a consistent point of view.
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  39. Isaac Levi (2003). Counterexamples to Recovery and the Filtering Condition. Studia Logica 73 (2):209 - 218.
    David Makinson has argued that the compelling character of counterexamples to the Recovery Condition on contraction is due to an appeal to justificational structure. In “naked theories” where such structure is ignored or is not present, Recovery does apply. This note attempts to show that Makinson is mistaken on both counts. Recovery fails when no appeal is made to justificational structure.
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  40. Isaac Levi (2002). Commitment and Change of View. In Jose Luis Bermudez & Alan Millar (eds.), Reason and Nature. Clarendon. 209--232.
  41. Isaac Levi (2002). Money Pumps and Diachronic Books. Proceedings of the Philosophy of Science Association 2002 (3):S235-S247.
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  42. Isaac Levi (2001). Objective Modality and Direct Inference. The Monist 84 (2):179-207.
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  43. Isaac Levi (2000). The Foundations of Causal Decision Theory. Journal of Philosophy 97 (7):387-402.
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  44. Isaac Levi (1999). Value Commitments, Value Conflict, and the Separability of Belief and Value. Philosophy of Science 66 (4):509-533.
    Leeds (1990) levels an objection against the criterion of rational choice I have proposed (Levi 1997, Ch. 6; 1980; 1986), pointing out that the criterion is sensitive to the way possible consequences are partitioned. Seidenfeld, Kadane and Schervish (1989) call into question the defense of the cross product rule by appeal to Pareto Unanimity Principles that I had invoked in my 1986. I offer clarifications of my proposals showing that the difference between my views and those of my critics concerns (...)
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  45. Isaac Levi (1998). Pragmatism and Change of View. Canadian Journal of Philosophy 28 (sup1):177-201.
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  46. Isaac Levi (1997). Caution and Nonmonotonic Inference. Poznan Studies in the Philosophy of the Sciences and the Humanities 51:101-116.
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  47. Isaac Levi (1997). Making Choices. Journal of Philosophy 94 (11):588-597.
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  48. Isaac Levi (1997). The Covenant of Reason: Rationality and the Commitments of Thought. Cambridge University Press.
    Isaac Levi is one of the preeminent philosophers in the areas of pragmatic rationality and epistemology. This collection of essays constitutes an important presentation of his original and influential ideas about rational choice and belief. A wide range of topics is covered, including consequentialism and sequential choice, consensus, voluntarism of belief, and the tolerance of the opinions of others. The essays elaborate on the idea that principles of rationality are norms that regulate the coherence of our beliefs and values with (...)
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  49. Horacio Arló Costa & Isaac Levi (1996). Two Notions of Epistemic Validity. Synthese 109 (2):217 - 262.
    How to accept a conditional? F. P. Ramsey proposed the following test in (Ramsey 1990).(RT) If A, then B must be accepted with respect to the current epistemic state iff the minimal hypothetical change of it needed to accept A also requires accepting B.
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  50. Horacio Arló Costa & Isaac Levi (1996). Two Notions of Epistemic Validity-Epistemic Models for Ramsey's Conditionals. Synthese 109 (2):217-262.
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