Online research in philosophy

Newton’s argument for universal gravitation in the Principia eventually rested on the third “Rule of Philosophizing,” which warrants the generalization of “qualities of bodies.” An analysis of the rule and the history of its development indicate that the term ‘quality’ should be taken to include both inherent properties of bodies and relations among systems of bodies, generalized into `laws'. By incorporating law‐induction into the rule, Newton could legitimately rebuff objections to his theory by claiming that universal gravitation was justified by (...) his method even if he could not specify the cause of gravity . †To contact the author, please write to: Department of Philosophy, Duke University, 201 West Duke Building, Box 90743, Durham, NC 27708; e‐mail: david.m.miller@duke.edu. (shrink)

Galileo’s impractical science Content Type Journal Article Pages 1-3 DOI 10.1007/s11016-011-9534-4 Authors David Marshall Miller, Department of Philosophy, Duke University, 201 West Duke, Durham, NC 27708, USA Journal Metascience Online ISSN 1467-9981 Print ISSN 0815-0796.

This book explores the various aspects of social justice--to each according to his rights, to each acording to his desert, and to each according to his need--comparing the writings of Hume, Spencer, and Kropotkin. Miller demonstrates that there are radical differences in outlook on social justice between societies, and that these differences can be explained by reference to features of the social structure.

This Introduction introduces readers to the concepts of political philosophy: authority, democracy, freedom and its limits, justice, feminism, multiculturalism, and nationality. Accessibly written and assuming no previous knowledge of the subject, it encourages the reader to think clearly and critically about the leading political questions of our time. THe book first investigates how politcial philosophy tackles basic ethical questions such as 'how should we live together in society?' It furthermore looks at political authority, discusses the reasons society needs politics in (...) the first place, explores the limitations of politics, and asks if there are areas of life that shouldn't be governed by politics. Moreover, the book explores the connections between political authority and justice, a constant theme in political philosophy, and the ways in which social justice can be used to regulate rather than destroy a market economy. In his travels through this realm, Miller covers why nations ar the natural units of government and wonders if the rise of multiculturalism and transnational co-operation will change all this, and asks in the end if we will ever see the formation of a world government. (shrink)

This volume is a direct result of a conference held at Princeton University to honor George A. Miller, an extraordinary psychologist. A distinguished panel of speakers from various disciplines -- psychology, philosophy, neuroscience and artificial intelligence -- were challenged to respond to Dr. Miller's query: "What has happened to cognition? In other words, what has the past 30 years contributed to our understanding of the mind? Do we really know anything that wasn't already clear to William James?" Each (...) participant tried to stand back a little from his or her most recent work, but to address the general question from his or her particular standpoint. The chapters in the present volume derive from that occasion. (shrink)

The provision of public goods is generally assumed to require compulsion by the state. Individuals may want them, but they have no incentive to contribute voluntarily to their production. David Schmidtz proposes ?assurance contracts? as a way around the problem of ?wasted? contributions. However, such contracts do not eliminate the incentive to free ride on public goods. Empirical evidence suggests that enforced contributions may be a more effective way of combatting this problem than assurance contracts. More generally, we need (...) to investigate different kinds of moral motivation to see how they may elicit voluntary contributions of public goods. (shrink)

My initial hope when I first saw Miller’s book was that here at least would be a work which satisfies the long standing need for a comprehensive introduction to contemporary metaethics which is accessible enough to be employed in advanced undergraduate courses and introductory graduate seminars. This hope was only partially realized, however, as Miller ends up oscillating between clear presentations of extant debates in the recent literature and his own extended attempts to determine where the truth of (...) the matter lies. The result is an interesting book that likely will appeal both to those looking for a classroom text in metaethics as well as to experts on the relevant issues. (shrink)

The Federalist, written by “Publius” (Alexander Hamilton, John Jay, and James Madison) in 1787-1788 in defense of the proposed constitution of the United States, endorses a fundamental principle of political legitimacy: namely, “it is the reason of the public alone, that ought to control and regulate the government.” This essay argues that this principle—the rule of reason—may be traced back to Plato. Part I of the essay seeks to show that Plato's Statesman offers a clearer understanding of the rule of (...) reason than his more famous Republic, and it also indicates how this principle gave rise to the ideal of constitutionalism, which was adopted and reformulated by Aristotle, Polybius, and Cicero, as well as moderns including Locke and Montesquieu. Part II argues that The Federalist agrees with Plato when it argues that popular sovereignty must be tempered by the rule of reason. A proper distance should be maintained between the people and the actual exercise of power in order that political decisions be based on reason rather than passion. The people must therefore act through a federal system divided between national government and state governments, and these governments must themselves possess separated powers which control each other by means of checks and balances. Indeed, federalism itself may be viewed as a modern counterpart of Plato's “art of weaving,” which unites naturally disparate and opposed parts of the city-state into a concordant whole. In declaring, “If men were angels, no government would be necessary,” The Federalist concedes that politics is the art of the possible. But statesmanship is not an exercise in pragmatism devoid of principles. Here “Publius” shares Plato's vision of politics as a “second sailing,” that is, an attempt to approximate the ideal of rational governance as far as possible in ordinary politics. Footnotesa This paper was originally presented at a meeting of the Symposium on Political Thought at Bowling Green State University. I am very grateful to the participants for their helpful suggestions, including Peter Celello, Albert Dzur, Neil Englehart, Jefferson Holcomb, David Jackson, Melissa Miller, Terrence Watson, and Adam White. I also received valuable criticisms from David Keyt, Ellen Frankel Paul, and the other contributors to this volume. (shrink)

Earlier in the pages of this journal (p 481), Wendler and Miller offered the "net risks test" as an alternative approach to the ethical analysis of benefits and harms in research. They have been vocal critics of the dominant view of benefit-harm analysis in research ethics, which encompasses core concepts of duty of care, clinical equipoise and component analysis. They had been challenged to come up with a viable alternative to component analysis which meets five criteria. The alternative must (...) (1) protect research subjects; (2) allow clinical research to proceed; (3) explain how physicians may offer trial enrolment to their patients; (4) address the challenges posed by research containing a mixture of interventions and (5) define ethical standards according to which the risks and potential benefits of research may be consistently evaluated. This response argues that the net risks test meets none of these criteria and concludes that it is not a viable alternative to component analysis. (shrink)

The 'Art of Life' is John Stuart Mill's name for his account of practical reason. In this volume, eleven leading scholars elucidate this fundamental, but widely neglected, element of Mill's thought. Mill divides the Art of Life into three 'departments': 'Morality, Prudence or Policy, and Æsthetics'. In the volume's first section, Rex Martin, David Weinstein, Ben Eggleston, and Dale E. Miller investigate the relation between the departments of morality and prudence. Their papers ask whether Mill is a rule (...) utilitarian and, if so, whether his practical philosophy must be incoherent. The second section contains papers by Jonathan Riley and Wendy Donner, who explore the relation between the departments of morality and aesthetics. They discuss issues ranging from supererogation to aesthetic pleasure and humanity's relationship with nature. -/- The papers in the third section consider the Art of Life's axiological first principle, the principle of utility. Elijah Millgram contends that Mill's own life refutes his claim that the Art of Life has a single axiological first principle. Philip Kitcher maintains that Mill has a dynamic axiology requiring us to continually refine our conception of the good. In the final section, three papers address what it means to put the Art of Life into practice. Robert Haraldsson locates an 'Art of Ethics' in On Liberty that is in tension with the Art of Life. Nadia Urbinati plumbs the classical roots of Mill's view of the good life. Finally, Colin Heydt develops Mill's suggestion that we regard our own lives as works of art. (shrink)

I am indebted to Zwirn and Zwirn [1989] (hereafter Z&Z) for their extended and careful comments on the arguments of Popper & Miller [1983], [1987], and also for friendly and illuminating conversations. Their judgement seems to be that although Popper and I fail to make a satisfactory case for our conclusion that inductive probability is impossible, that conclusion is nonetheless defensible on quite other grounds. I don’t really agree with this, as I shall explain.

Rachlin's substantive points about the relationship between altruism and self-control are obscured by simplistic and outdated portrayals of evolutionary psychology in relation to learning theory.

Pragmatism is a distinctive approach to clinical research ethics that can guide bioethicists and members of institutional review boards (IRBs) as they struggle to balance the competing values of promoting medical research and protecting human subjects participating in it. After defining our understanding of pragmatism in the setting of clinical research ethics, we show how a pragmatic approach can provide guidance not only for the day-to-day functioning of the IRB, but also for evaluation of policy standards, such as the one (...) that addresses acceptable risks for healthy children in clinical research trials. We also show how pragmatic considerations might influence the debate about the use of deception in clinical research. Finally, we show how a pragmatic approach, by regarding the promotion of human research and the protection of human subjects as equally important values, helps to break down the false dichotomy between science and ethics in clinical research. (shrink)

lecting statistics about missing bindings and macros, and other errors. This guides debugging and development efforts, leading to iterative improvements in both the tools and the quality of the converted corpus. The build system thus serves as both a production conversion engine and software test harness. We have now processed the complete arχiv collection through 2006 consisting of more than 400,000 documents (a complete run is a processor-yearsize undertaking), continuously improving our success rate. We are now able to convert more (...) than 90% of these documents to XHTML+MathML. We consider over 60% to be successes, converted with no or minor warnings. While the remaining 30% can also be converted, their quality is doubtful, due to unsupported macros or conversion errors. (shrink)

This article attacks the view that global justice should be understood in terms of a global principle of equality. The principle mainly discussed is global equality of opportunity – the idea that people of similar talent and motivation should have equivalent opportunity sets no matter to which society they belong. I argue first that in a culturally plural world we have no neutral way of measuring opportunity sets. I then suggest that the most commonly offered defences of global egalitarianism – (...) the cosmopolitan claim that human lives have equal value, the argument that a persons nationality is a morally arbitrary characteristic, and the more empirical claim that relationships among fellow-nationals are no longer special in a way that matters for justice – are all defective. If we fall back on the idea of equality as a default principle, then we have to recognize that pursuing global equality of opportunity systematically would leave no space for national self-determination. Finally, I ask whether global inequality might be objectionable for reasons independent of justice, and argue that the main reason for concern is the inequalities of power that are likely to emerge in a radically unequal world. (shrink)

Cosmopolitanism, originally a doctrine of world citizenship, has come in recent political philosophy to mean simply an ethical outlook in which every human being is equally an object of moral concern. However ethical cosmopolitans slide from this moral truism to deny, controversially, that as agents we have special duties of limited scope. Political communities create relations of reciprocity between their citizens and pursue projects that reflect culturally specific values and beliefs, generating special duties among fellow-members. Strong cosmopolitanism would require the (...) creation of a world government, and this could only be an imperialist project in which existing cultural differences were either nullified or privatised. (shrink)

Ethical theories normally make room both for global duties to human beings everywhere and special duties to those we are attached to in some way. Such a split-level view requires us to specify the kind of attachment that can ground special duties, and to explain the comparative force of the two kinds of duties in cases of conflict. Special duties are generated within groups that are intrinsically valuable and not inherently unjust, where the duties can be shown to be integral (...) to relationships within the group. Since nations can be shown to meet these conditions, acknowledging special obligations towards compatriots is justified. However for such partiality to be reasonable, it must be balanced against recognition of duties of global justice. These duties include duties to respect human rights and duties of fairness towards non-nationals. Weighing such duties against domestic duties of social justice is not a simple task, and the outcome should depend on the precise specification of the duty at stake. In particular, the duty to respect human rights fragments into four sub-duties whose force when set against local duties is markedly different. (shrink)

Michael Walzer has argued that `distributive justice presupposes a bounded world', but what counts as a relevant boundary? The article criticizes two arguments holding that boundaries should not count at all: a negative argument that there is no relevant difference between human relationships within and across state borders and a positive argument that principles of justice must, as a matter of logic, be universal in scope. It then examines three rival accounts of the bounded scope of distributive justice: the cooperative (...) practice view, the political coercion view, and the common identity view. Although each has plausible arguments to support it, none turns out to give necessary and sufficient conditions for principles of distributive justice to apply. Importantly, however, the idea of social justice has emerged within political units (nation-states) that to a large extent combine the three features in question. To the extent that this overlap breaks down, we will need to develop new theories of transnational justice. (shrink)

Steering a middle course between cosmopolitanism and a narrow nationalism, the book develops an original theory of global justice that also addresses controversial topics such as immigration and reparations for historic wrongdoing.

This paper contrasts universalist approaches to justice with contextualist approaches. Universalists hold that basic principles of justice are invariant — they apply in every circumstance in which questions of justice arise. Contextualists hold that different principles apply in different contexts, and that there is no underlying master principle that applies in all. The paper argues that universalists cannot explain why so many different theories of justice have been put forward, nor why there is so much diversity in the judgements that (...) ordinary people make. Several strategies open to universalists are considered and found to be wanting. Contextualism is defended against the charge that it cannot explain why contextually specific principles are all principles of justice, the charge that it can offer no practical guidance when principles conflict, and the charge that it inevitably collapses into a form of conventionalism. Key Words: justice • universalism • contextualism • conventionalism • Rawls • Walzer. (shrink)

Recent work in personal identity has emphasized the importance of various conventions, or ‘person directed practices’ in the determination of personal identity. An interesting question arises as to whether we should think that there are any entities that have, in some interesting sense, conventional identity conditions. We think that the best way to understand such work about practices and conventions is the strongest and most radical. If these considerations are correct, persons are, on our view, conventional constructs: they are in (...) part constituted by certain conventions. A person exists only if the relevant conventions exist. A person will be a conscious being of a certain kind combined with a set of conventions. Some of those conventions are encoded in the being itself, so requiring the conventions to exist is requiring the conscious being to be organized in a particular way. In most cases the conventions in question are settled. There is no dispute about what the conventions are, and thus no dispute about which events a person can survive. These are cases where we take the conventions so much for granted, that it is easy to forget that they are there, and that they are necessary constituents of persons. Sometimes though, conventions are not settled. Sometimes there is a dispute about what the conventions should be, and thus a dispute about what events a person can survive. These are the traditional puzzle cases of personal identity. That it appears t h a t conventions play a part in determining persons’ persistence conditions only in these puzzle cases is explained by the fact that only in these cases are the conventions unsettled. Settled or not though, conventions are necessary constituents of persons. (shrink)

How should we decide when to be altruistic ? who are the poor we ought to help? Empirical evidence reveals that in practice altruistic behaviour is strongly influenced by contextual factors such as the cost of helping, perceptions of the person in need, and the number of other people who are in a position to offer help. Philosophers often argue that we should discount such factors, but I claim that altruism is better understood as doing one's proper share of the (...) work of meeting nee. Three possible mechanisms for achieving this are explored: creating formal institutions to discharge our altruistic duties, imposing a legal duty of rescue on individuals, and fostering norms of responsibility that pick out individuals as salient helpers. (shrink)

‘What distinguishes science from all other human endeavours is that the accounts of the world that our best, mature sciences deliver are strongly supported by evidence and this evidence gives us the strongest reason to believe them.’ That anyway is what is said at the beginning of the advertisement for a conference on induction at a celebrated British seat of learning in 2007. It shows how much critical rationalists still have to do to make known the message of Logik der (...) Forschung concerning what empirical evidence is able to do and what it does. (shrink)

Cognitively-oriented theories have dominated the recent history of the study of emotion. However, critics of this perspective suggest the role of the body in the experience of emotion is largely ignored by cognitive theorists. As an alternative to the cognitive perspective, critics are increasingly pointing to William James’ theory, which emphasized somatic aspects of emotions. This emerging emphasis on the embodiment of emotions is shared by those in the field of AI attempting to model human emotions. Behavior-based agents in AI (...) are attempts to model the role the body might play in the experiencing of emotions. Progress in creating such behavior-based models that function in their environments has been slow, suggesting some potential problems with Jamesian alternatives to cognitive perspectives of emotions. Heidegger’s and Merleau-Ponty’s conceptions of embodiment are suggested as alternatives to James’ and as means for addressing the shortcomings of the cognitive perspective. (shrink)

Karl Popper’s Objective Knowledge stands at the threshold of his last major philosophical phase, the period from his retirement from the London School of Economics in 1969 until his death in 1994. The two great books that he wrote before he came to London, Logik der Forschung (1934) and The Open Society and Its Enemies (1945), contain much more than the innovations in the theory of scientific method and the theory of democracy for which they are famous. Logik der Forschung, (...) translated into English as The Logic of Scientific Discovery (1959), is by no means just a tract, even a revolutionary one, on the methods of science, since about one third of the text is devoted to searchingly original treatments of the frequency theory of probability and of the interpretation of quantum mechanics, whilst the unpublished manuscript on which the book was based, Die beiden Grundprobleme der Erkenntnistheorie (1979), at whose content it often hints, presents a wealth of significant material on the psychology of human learning and its biological context. Popper had, after all, been a student of Karl B¨ uhler, and had absorbed the theories of problem solving developed within the W¨ urzburg School (Popper 1974a, § 15). The Open Society and Its Enemies, for its part, is not so much a book defending democratic liberalism as a defence of democratic liberalism nestling within a book that discusses every other topic under the sun. It offers profound and provocative studies of the thought of Plato and Marx (see Hacohen 2000, Chapter 9, for a critical appreciation), an abundance of scholarly, if often controversial, historical interpretations of the work of Heraclitus, Aristotle, Hegel, J. S. Mill, Wittgenstein, Mannheim, and others, the elements of a new theory of rationality, and many elucidations of the workings of science that go beyond what is explicit in Logik der Forschung. One insight worth mentioning, since it is little known, is the clear recognition in section II of Chapter 11 that the progress of science is typically revolutionary, not cumulative; a commonplace today perhaps, but one.... (shrink)

This paper identifies problems with indexicalism and abverbialism about temporary intrinsic properties, and solves them by disentangling two senses in which a particular may possess a property simpliciter. The first sense is the one identified by adverbialists in which a particular possesses at all times the property as a matter of foundational metaphysical fact regardless of whether it is manifest. The second involves building on adverbialism to produce a semantics for property-manifestation according to which different members of a family of (...) second-order properties of the foundational property are relevant to property manifestation at different times. (shrink)

A review essay of Gillian Brock Global Justice: A Cosmopolitan Account (Oxford University Press, 2009).

If the open society is a society that ‘sets free the critical powers of man’ (Popper, 1945, Introduction), then the subject of critical thinking, now widely taught in universities in North America and at the level of further education in the UK, might seem to be a welcome innovation. Caution is advised. By mistakenly supposing that thinking intelligently is identical with thinking logically, critical thinking textbooks almost invariably regard the purpose of argument to be a combination of justification and persuasion, (...) authoritarian goals that critical rationalists, and other supporters of the open society, must shun. If students do not learn the proper place of reason, and its limitations, they will be disappointed when it fails, and like many irrationalists in the past, may be induced to reason their way out of reason altogether. (shrink)

Some students in the humanities take fright when introduced to the formal manipulations characteristic of elementary sentential & predicate logic. One way to lessen the pain of initiation is to start with word games, of which Lewis Carroll’s Doublets (section 1) is a familiar example. The paper presents some other games that successively introduce more of the..

The non-justificationist deductivism (or critical rationalism) of Karl Popper constitutes the only approach to human knowledge, including of course the natural and social sciences, that is capable of overcoming all the failings, and the plain contradictions, of the traditional doctrine of inductivism and of its modern incarnation, Bayesianism.

The burden of this theorem, stated informally, is that when a hypothesis h is maximally independent of the evidence — that is, it goes wholly beyond the evidence —, then the probability p(h, e) increases when the evidence e is weakened; and hence, the weaker is the evidence, the greater is the probabilistic support.

This paper examines the idea of human rights, and how they should be justified. It begins by reviewing Peter Jones?s claim that the purpose of human rights is to allow people from different cultural backgrounds to live together as equals, and suggests that this by itself provides too slender a basis. Instead it proposes that human rights should be grounded on human needs. Three difficulties with this proposal are considered. The first is the problem of whether needs are sufficiently objective (...) for this purpose, to which it responds by drawing a distinction between human needs proper and societal needs. The second is the problem of overshoot: human needs are more expansive than human rights. It responds to this by arguing that where needs conflict, we make trade-offs before specifying the optimum set of human rights. The third is the problem of undershoot: needs cannot be used to ground civil and political rights. Here it suggests that some of these rights can be grounded directly in needs, others can be justified instrumentally, and yet others grounded in the human need for recognition. Finally the paper returns to Jones, and asks which approach to human rights is better able to justify them within both liberal and non-liberal cultures. (shrink)

Contesting the common opinion that, unlike the problem of induction, the problem of demarcation is of little significance, the paper maintains that Popper’s criterion of falsifiability gives an irresistible answer to the question of what can be learnt from an empirical investigation. Everything follows from the rejection of inductive logic, together with the recognition that, before it can be empirically investigated, a hypothesis has to be formulated and accepted. Scientific hypotheses emerge neither a posteriori, as inductivists..

The paper defends a combination of perdurantism with mereological universalism by developing semantics of temporary predications of the sort ’some P is/was/will be (a) Q’. We argue that, in addition to the usual application of causal and other restrictions on sortals, the grammatical form of such statements allows for rather different regimentations along three separate dimensions, according to: (a) whether ‘P’ and ‘Q’ are being used as phase or substance sortal terms, (b) whether ‘is’, ‘was’, and ‘will be’ are (...) the ‘is’, ‘was’, ‘will be’ of identity or of constitution, and (c) whether ‘Q’ is being used as a subject or predicate term. We conclude that this latitude is beneficial, as it conforms with linguistic reality (i.e., the multiple uses actually in place) and also enables one to turn what is ordinarily perceived as a problem for universalist perdurantism viz., a commitment to all sorts of weird and gerrymandered temporally extended entities, into an advantage, for the richness in questions allows us to make sense of the many different readings of sentences of the same grammatical form. (shrink)

Calling into service the theory of truth approximation of his (1997) and (2000), Kuipers defends the view that "beauty can be a road to the truth" and endorses the general conclusions of McAllister (1996) that aesthetic criteria reasonably play a role in theory selection in science. My comments pertain first to the general adequacy of Kuipers's theory of truth approximation; secondly to its methodological aspects; thirdly to the aetiolated role that aesthetic factors turn out to play in his account; and (...) fourthly to the question before us, with a remark on McAllister's doctrine that scientific revolutions are characterized above all by novelty of aesthetic judgement. (shrink)

. Dzik [2] gives a direct proof of the axiom of choice from the generalized Lindenbaum extension theorem LET. The converse is part of every decent logical education. Inspection of Dzik’s proof shows that its premise let attributes a very special version of the Lindenbaum extension property to a very special class of deductive systems, here called Dzik systems. The problem therefore arises of giving a direct proof, not using the axiom of choice, of the conditional . A partial solution (...) is provided. (shrink)

The thesis of the present note is that the resemblance between Bradwardine’s highly instructive definition of truth, and what emerges from Tarski’s method of defining truth, is much closer than Read’s discussion reveals. Each approach, however, has serious defects.

Most historians of science eagerly acknowledge that the early modern period witnessed a shift from a prevailing Aristotelian, spherical, centered conception of space to a prevailing Cartesian, rectilinear, oriented spatial framework. Indeed, this shift underlay many of the important advances for which the period is celebrated. However, historians have failed to engage the general conceptual shift, focusing instead on the particular explanatory developments that resulted. This historical lacuna can be attributed to a historiographical problem: the lack of an adequate unit (...) of analysis by which to investigate the conceptual change. Here, a philosophical argument is made for representations of space as an appropriate category of historical investigation, and methods of textual interrogation are suggested to this end. Finally, two examples, taken from Aristotle and Newton, demonstrate the feasibility and importance of this project. (shrink)

This essay gathers Wittgenstein''s comments and considerations concerning the philosophical investigation of time. Time here serves as an exemplary instance of Wittgenstein''s manner of philosophical critique and his turn to a new practice of philosophy. His comments on time demonstrate this two-fold movement. On the one hand, he concerns himself with pointing out thewrong turnsphilosophers take when they ask:What is time?These include a semantic error, the over reliance on figurative language, the felt need for definitions, and a mistaken assumption about (...) the task of philosophy that underlies these problems. On the other hand, he concerns himself with dwelling upon and describing time as an intricate and dynamic interweaving, a manifold and ongoing entanglement of human practices. (shrink)

to think critically means that we are able to think in a logical fashion — in straight lines, as it were. One of the hardest skills that all undergraduates have to acquire is being able to think logically and then formulate these logical thoughts into sentences to produce an academic essay. Sentences and paragraphs in an essay have to follow on from each other in a logical sequence. This is part of critical thinking. So titles like Practical Logic or Reasoning (...) reflect this aspect of critical thinking. (shrink)

: Catholic teaching has no moral difficulties with research on stem cells derived from adult stem cells or fetal cord blood. The ethical problem comes with embryonic stem cells since their genesis involves the destruction of a human embryo. However, there seems to be significant promise of health benefits from such research. Although Catholic teaching does not permit any destruction of human embryos, the question remains whether researchers in a Catholic institution, or any researchers opposed to destruction of human embryos, (...) could participate in research on cultured embryonic stem cells, or whether a Catholic institution could use any therapy that ultimately results from such research. This position paper examines how such research could be conducted legitimately in a Catholic institution by using an ethical analysis involving a narrative context, the nature of the moral act, and the principle of material cooperation, along with references to significant ethical assessments. It also offers tentative guidelines that could be used by a Catholic institution in implementing such research. (shrink)

A theory of probability is outlined that permits the values of the probability function to lie in any Brouwerian algebra.

It is a simple, though ancient, mistake in the theory of knowledge to think that justification, in any degree, is central to rationality, or even important to it. We must cut for ever the intellectual apron strings that continue to offer us spurious and unneeded security, and replace the insoluble problem of what our theories are based on by the soluble problem of how to expose their shortcomings. The paper will outline (not for the first time) the critical rationalism of (...) Karl Popper, taking account of some recent criticisms. A brief discussion of the status of the laws of logic provides an illustration of the power of the critical approach. (shrink)

Let me start with a disclaimer. I am not going to be primarily concerned with the Gödelian argument against mechanism, although that is what I am primarily associated with in the public mind. Not that I don't stand by it. Although there have been many criticisms, some of them ill informed and evidently based on not having read what I had actually written, the critics had a strong tendency to disagree with one another more than they did with me, or (...) later with Roger Penrose. At first I tried to answer critical arguments, but became somewhat bored with having to make the same points over and over again. I often wondered what Gödel himself thought, having a strong sense of his being in sympathy with my general line of argument. In fact he had expressed his views in a lecture on Boxing Day, 1951, which was finally published in the third volume of his Collected Works in 1995. Gödel argues for a disjunction: an Either/Or, with the strong suggestion that the second disjunct is untenable, and hence by Modus Tollendo Ponens that the first disjunct must be true. (shrink)

Rolando Chuaqui y yo, nos encontramos una ´ unica vez, en Bah´ıa Blanca en agosto 1992, en el Simposio Latino- Americano de L´ ogica Matem´ atica. Lamentablemente, Chuaqui muri´ o antes de mi pr´ oxima visita a Am´ erica del Sur, igual que otro gran l´ ogico latinoamericano, Carlos Alchourr´ on. Chuaqui estuvo en Bah´ıa Blanca juntos con varios alumnos que hablaron sobre aspectos de la l´.

: Recent controversial decisions to terminate several large clinical trials have called attention to the need for developing a sound ethical framework to determine when trials should be stopped in light of emerging efficacy data. Currently, the fundamental rationale for stopping trials early is based on the principle that equipoise has been disturbed. We present an analysis of the ethical and practical problems with the "equipoise disturbed" position and describe an alternative ethical framework based on the principle of nonexploitation. This (...) framework acknowledges the need for balancing the dual ethical obligations of clinical research, the protection of human subjects and the generation of new medical knowledge. Based on this framework, we put forward a proposal to make early stopping guidelines more stringent under specified conditions. The temporary withholding of apparent benefits in certain circumstances is justified by achieving a fair contract with the research participants, one that protects them from undue harm and exploitation while reducing the many uncertainties surrounding new investigational treatments that arise when trials are stopped prematurely. (shrink)

http://dx.doi.org/10.5007/1808-1711.2009v13n3p339 A fim de medir o grau de dessemelhança entre elementos de uma álgebra booleana, o autor propôs em (1984) usar pseudométricas satisfazendo generalizações dos axiomas usuais para a identidade. A proposta é estendida, na medida em que é exequível, de álgebras booleanas (álgebras de proposições) para álgebras de Brouwer (álgebras de teorias dedutivas). A relação entre geometrias booleanas e de Brouwer da lógica resulta semelhante, de maneira curiosa, à relação entre geometrias euclidianas e não-euclidianas do espaço físico. O artigo (...) conclui com uma breve consideração do problema da metrização da álgebra de teorias. (shrink)

The notation and terminology of this paper follow [2], and are dual to those of [6] and [7]. If L is a language in the narrow sense, Cn may be any consequence operation on sets of sentences of L that includes classical sentential logic. Henceforth when we talk of the language L we intend to include reference to some fixed, though unspecified, operation Cn. X is a deductive system if X = Cn(X). Sentences x, z that are logically equivalent with (...) respect to Cn – that is x ∈ Cn({z}) and z ∈ Cn({x}) – are identified. If X and Z are systems we often write X x instead of x ∈ X and Z X instead of X ⊆ Z. If X = Cn({x}) for some sentence x, X is (finitely) axiomatizable. The set theoretical intersection of X and Z has the logical force of disjunction, and is written X ∨ Z; Cn(X ∪ Z), the smallest system to include both X and Z, is written XZ. If K is a family of systems, [K] and [K] may be defined in an analogous way. The logically strongest system S is the set of all sentences of L; the weakest system T is defined as Cn(∅). The autocomplement Z of Z is defined to be the strongest system to complement T, namely the system [{Y : Y ∨ Z = T}]. More generally we may define X − Z as [{Y : X Y ∨ Z}]. In terms of this operation to remainder, Z is identical with T − Z. The class of all deductive systems forms a distributive lattice under the operations of concatenation and ∨; and indeed a Brouverian algebra (a relatively authocomplemented lattice with unit) under concatenation, ∨ – and T. (shrink)

* Este texto hizo parte de una conferencia que se ofreció en el X Congreso Nacional de Filosofía de Argentina, celebrado en Huerta Grande (Córdoba) entre el 24 y el 27 de noviembre de 1999. Una versión abreviada ha sido publicada en las pp. 74-76 de Actas de X Congreso Nacional de Filosofía. Asociación Filosófica Argentina AFRA y Escuela de Filosofía, Universidad Nacional..

Hindu ethical studies, as a discipline distinct from religious and philosophical studies and as a field of descriptive ethics within comparative ethical studies, is a relatively recent venture. Scholars have focused upon classical Sanskritic texts for the basis of their studies, ignoring, for the most part, the rich source of commentaries on Hindu scriptures that form what Smith has called "the cumulative tradition." Furthermore, the most urgent need in the field of Hindu ethical studies is to establish definitional and methodological (...) clarity. Putting aside problems of method for later consideration, this paper explores the richness and variety of sources for the study of Hindu ethics and emphasizes the importance of integrating the study of theoretical ethics with the "lived" moralities that continue to dominate Indian society. (shrink)

The notation and terminology of this paper follow [2], and are dual to those of [6] and [7]. If L is a language in the narrow sense, Cn may be any consequence operation on sets of sentences of L that includes classical sentential logic. Henceforth when we talk of the language L we intend to include reference to some fixed, though unspecified, operation Cn. X is a deductive system if X = Cn(X). Sentences x, z that are logically equivalent with (...) respect to Cn – that is x ∈ Cn({z}) and z ∈ Cn({x}) – are identified. If X and Z are systems we often write X x instead of x ∈ X and Z X instead of X ⊆ Z. If X = Cn({x}) for some sentence x, X is (finitely) axiomatizable. The set theoretical intersection of X and Z has the logical force of disjunction, and is written X ∨ Z; Cn(X ∪ Z), the smallest system to include both X and Z, is written XZ. If K is a family of systems, [K] and [K] may be defined in an analogous way. The logically strongest system S is the set of all sentences of L; the weakest system T is defined as Cn(∅). The autocomplement Z of Z is defined to be the strongest system to complement T, namely the system [{Y : Y ∨ Z = T}]. More generally we may define X − Z as [{Y : X Y ∨ Z}]. In terms of this operation to remainder, Z is identical with T − Z. The class of all deductive systems forms a distributive lattice under the operations of concatenation and ∨; and indeed a Brouverian algebra (a relatively authocomplemented lattice with unit) under concatenation, ∨ – and T. (shrink)