The growing literature on philosophical thought experiments has so far focused almost exclusively on the role of thought experiments in confirming or refuting philosophical hypotheses or theories. In this paper we draw attention to an additional and largely ignored role that thought experiments frequently play in our philosophical practice: some thought experiments do not merely serve as means for testing various philosophical hypotheses or theories, but also serve as facilitators for conceiving and articulating new ones. As we will put it, (...) they serve as ‘heuristics for theory discovery’. Our purpose in the paper is two-fold: to make a case that this additional role of thought experiments deserves the attention of philosophers interested in the methodology of philosophy; to sketch a tentative taxonomy of a number of distinct ways in which philosophical thought experiments can aid theory discovery, which can guide future research on this role of thought experiments. (shrink)

This dissertation responds to the question, "To what extent can the pragmatist theories of truth of Peirce and James be defended against the major philosophical criticisms that have been used to dismiss them?" The answer to this depends to a great degree on the kind of formulation given these theories. Hence, one of the major goals of this dissertation is to express precisely and systematically Peirce's and James's theories of truth in such a way that only one of various possible (...) alternative expressions is identified as the interpretation that most remains faithful to the intentions of Peirce and James. Rather than offer merely a historical overview of these theories, I attempt a critical reformulation of them in the sense that I intervene to correct errors and aberrations in the theories as promulgated, either on my own responsibility or by reference to authoritative statements. The investigation consists of these parts: a comparison and contrast of Peirce's and James's pragmatic methods, in which it is suggested that James's medical background led him to a theory of meaning rather more broad in principle than Peirce's; an investigation of Peirce's theory of truth, in which his most famous formulation receives detailed exegesis; an investigation of James's theory of truth, in which it is argued that this theory should more properly be understood as a theory of knowledge; and an enumeration and evaluation of those major philosophical criticisms aimed at these theories, in which it is argued that the pragmatist theories have, indeed, been misunderstood, and that when correctly interpreted, they may be defended against these objections. (shrink)

Robert richman tries to defend a justified-True-Belief analysis of knowledge by attacking the assumption that a justified belief can be false. But, Although 'p is justified but false' is incoherent if asserted about the way things actually are, It is not incoherent if asserted about a supposed situation. And critics of a justified-True-Belief analysis need only do the latter.

Knowing is something that we do not have much of a theory about., p. 365.)Interest has recently been shown in causal theories of perception, memory, inference, reference, truth, justification and belief, as well as in a more general “causal theory of knowledge” which would embrace and connect all of these concepts within a broad epistemological framework. The burden of this paper is that prospects are poor for an interesting and general enough causal theory of knowledge. A threat to generality arises (...) from the causal theory's difficulties with knowledge of general truths. A threat to interest arises when attempts to accommodate general truths lead to a weakening of the notion of “causal connection” appealed to, making dubious the explanatory force of such an appeal. (shrink)

This paper considers a form of scepticism according to which sentences, along with other linguistic entities such as verbs and phonemes, etc., are never realized. If, whenever a conversational participant produces some noise or other, they and all other participants assume that a specific sentence has been realized (or, more colloquially, spoken), communication will be fluent whether or not the shared assumption is correct. That communication takes place is therefore, one might think, no ground for assuming that sentences are realized (...) during a typical conversation. I reject both this ‘folie-a-deux’ view and the arguments for it due to Georges Rey. I do so by drawing on Gilbert Harrnan’s no-false-lemmas principle. Since testimony is a form of knowledge and, according to the principle, knowledge cannot depend essentially on false assumptions, testimony is incompatible with the claim that sentence realization is but an illusion. Much of the paper is given over to defending this appeal to the no-false-lemmas principle. After all, a more attractive option might seem to be to infer instead that the principle is itself falsified by the folie-a-deux view. (shrink)

در دوران معاصر، می‌توان سه کلان‌الگوی خداباوری را دنبال کرد. این سه کلان‌الگو عبارت‌اند از ایمان‌گرایی، قرینه‌گرایی، عمل‌گرایی. هر‌یک از این سه کلان‌الگو متضمن الگوهایی است. ایمان‌گروی سه نظریۀ عمده را شامل می‌شود که بر‌اساس آن‌ها، ایمان در تعارض با استدلال عقلانی، بی‌ارتباط با استدلال عقلانی یا بی‌نیاز از استدلال عقلانی است. قرینه‌گرایی دو نظریۀ عمدۀ قرینه‌گرایی برهانی و قرینه‌گرایی استقرایی را در‌بر ‌می‌گیرد. عمل‌گرایی نیز مشتمل بر دو نظریۀ عمل‌گرایی آخرت‌محور و عمل‌گرایی دنیا‌محور است. مراجعه به آرای فیلسوفان مسلمان (...) و باز‌سازی آن‌ها به زبان جدید هم‌سخنی با نظریات معاصر را برای ما ممکن می‌کند؛ مثلاً با تأمل در اندیشه‌های ابن سینا می‌توان به باز‌سازی دیدگاه او در قالب قرینه‌گرایی برهانی و با تأمل در اندیشه‌های ملا‌صدرا می‌توان به بازسازی دیدگاه او در قالب ایمان‌گرایی از نوع سوم اقدام کرد. همچنین توجه به آرای غزالی امکان بازسازی آن‌ها را در قالب عمل‌گرایی به ما می‌دهد. فهم دقیق الگوهای خداباوری در دوران معاصر و تلاش برای بازسازی نظریات فیلسوفان مسلمان این امکان را به ما می‌دهد که در مواجهه با الحاد و الگوهای مختلف آن نیز به‌خوبی عمل کنیم. (shrink)

A natural language is an organic living thing; and meanings change as words take on new, and shed old, connotations. Recent philosophy of language has paid little attention to the growth of meaning; radical philosophers like Feyerabend and Rorty have suggested that meaning-change undermines the pretensions of science to be a rational enterprise. Thinkers in the classical pragmatist tradition, however -Peirce in philosophy of science and, more implicitly, Holmes in legal theory- both recognized the significance of growth of meaning, and (...) understood how it can contribute to the progress of science and to the adaptation of a legal system to changing circumstances. This paper develops these insights, and illustrates them by reference to the growth of meaning of "DNA" from the identification of "nuclein" to the discovery of mtDNA almost a century later, and the growth of meaning of "the establishment of religion" in the First Amendment to the U.S. Constitution from its ratification in 1791 to the present day. Arguing that the growth of meaning can indeed contribute to rationality, it also shows why narrowly formal models are inadequate both to science and to law. Un lenguaje natural es una cosa viviente orgánica, y los significados cambian a medida que las palabras adoptan nuevas connotaciones y abandonan viejas. La filosofía del lenguaje reciente ha prestado poca atención al desarrollo del significado; filósofos radicales, como Feyerabend y Rorty han sugerido que el cambio de significado socava las pretensiones de la ciencia de ser una empresa racional. Pensadores en la tradición pragmatista clásica, sin embargo -Peirce en la filosofía de la ciencia y, más implícitamente, Holmes en la teoría del Derecho- reconocieron la importancia del desarrollo del significado y comprendieron cómo éste puede contribuir al progreso de la ciencia y a la adaptabilidad de un sistema jurídico a las circunstancias cambiantes. Este trabajo desarrolla estas ideas, y las ilustra por medio de una referencia a el desarrollo del significado de "ADN" desde la identificación de la "nucleína" hasta el descubrimiento del ADN mitocondrial casi un siglo más tarde, y el desarrollo del significado de "el establecimiento de una religión" en la Primera Enmienda de la Constitución de los Estados Unidos desde su ratificación en 1791 hasta la actualidad. Argumentando que el desarrollo del significado puede contribuir mucho a la racionalidad, también muestra por qué los modelos estrechamente formales son inadecuados, tanto para la ciencia como para el Derecho. (shrink)

In a recent paper Robert J. Richman joins a host of doubters who question Gettier's claim that knowledge is not justified true belief. Richman's scepticism of Gettier's counterexamples to the traditional analysis of knowledge stems from what he says are two basic defects in the examples. One defect is that Gettier employs the Principle of Deducibility for Justification which Richman argues is false. The second defect is based on “the obvious consideration that a belief which is justified on the basis (...) of one set of facts or assumptions need not be justified on the basis of a different set.” I shall consider each of these alleged defects and argue that Richman has not shown that in fact they are defects and that Gettier's counterexamples do in fact show that knowledge is not justified true belief.The Principle of Deducibility for Justification states that for any proposition P, if P entails Q and S correctly deduces Q from P and accepts Q as a result of this deduction, then Sis justified in believing Q. (shrink)