Copyright ©2010–2015 All rights reserved. Jonathan Bennett [Brackets] enclose editorial explanations. Small ·dots· enclose material that has been added, but can be read as though it were part of the original text. Occasional •bullets, and also indenting of passages that are not quotations, are meant as aids to grasping the structure of a sentence or a thought. Every four-point ellipsis . . . . indicates the omission of a brief passage that seems to present more difficulty than it is worth. (...) Longer omissions are reported within [brackets] in normal-sized type.—This work was posthumously published in a Latin translation, and the original (English) manuscript was lost; so the Latin is all we have to work with.—The division into chapters and sections is presumably Lady Conway’s; the titles of chapters 2–9 are not. (shrink)

This article is concerned with the role of fundamental principles in theoretical physics, especially quantum theory. The fundamental principles of relativity will be addressed as well, in view of their role in quantum electrodynamics and quantum field theory, specifically Dirac’s work, which, in particular Dirac’s derivation of his relativistic equation of the electron from the principles of relativity and quantum theory, is the main focus of this article. I shall also consider Heisenberg’s earlier work leading him to the discovery of (...) quantum mechanics, which inspired Dirac’s work. I argue that Heisenberg’s and Dirac’s work was guided by their adherence to and their confidence in the fundamental principles of quantum theory. The final section of the article discusses the recent work by D’Ariano and coworkers on the principles of quantum information theory, which extend quantum theory and its principles in a new direction. This extension enabled them to offer a new derivation of Dirac’s equations from these principles alone, without using the principles of relativity. (shrink)

The aim of this paper is twofold: First, to present an examination of the principles underlying gauge field theories. I shall argue that there are two principles directly connected to the two well-known theorems of Emmy Noether concerning global and local symmetries of the free matter-field Lagrangian, in the following referred to as "conservation principle" and "gauge principle". Since both these express nothing but certain symmetry features of the free field theory, they are not sufficient to derive (...) a true interaction coupling to a new gauge field. For this purpose it is necessary to advocate a third, truly empirical principle which may be understood as a generalization of the equivalence principle. The second task of the paper is to deal with the ontological question concerning the reality status of gauge potentials in the light of the proposed logical structure of gauge theories. A nonlocal interpretation of topological effects in gauge theories and, thus, the non-reality of gauge potentials in accordance with the generalized equivalence principle will be favoured. (shrink)

The present paper investigates why logical empiricists remained silent about one of the most philosophy-laden matters of theoretical physics of their day, the principle of least action (PLA). In the two decades around 1900, the PLA enjoyed a remarkable renaissance as a formal unification of mechanics, electrodynamics, thermodynamics, and relativity theory. Taking Ernst Mach's historico-critical stance, it could be liberated from much of its physico-theological dross. Variational calculus, the mathematical discipline on which the PLA was based, obtained a new (...) rigorous basis. These three developments prompted Max Planck to consider the PLA as formal embodiment of his convergent realist methodology. Typically rejecting ontological reductionism, David Hilbert took the PLA as the key concept in his axiomatizations of physical theories. It served one of the main goals of the axiomatic method: ''deepening the foundations.'' Although Moritz Schlick was a student of Planck's, and Hans Hahn and Philipp Frank enjoyed close ties to Gottingen, the PLA became a veritable Shibboleth to them. Rather than being worried by its historical connections with teleology and determinism, they erroneously identified Hilbert's axiomatic method tout court with Planck's metaphysical realism. Logical empiricists' strict containment policy against metaphysics required so strict a separation between physics and mathematics to exclude even those features of the PLA and the axiomatic method not tainted with metaphysics. (shrink)

The aim of the article is to philosophically address and expand the contemporary discourse of the increasingly digitalized education by examining the problem of matter of education and its conceptualizations in this context. With the digital transformation of education a significant change occurs not only in terms of what is considered to be a matter of education, but also in the very principles of interaction between the subjects of education. In order to do this, in the first section (...) several examples of conceptual justifications of applying digital technologies in education are examined with the task of demonstrating how in such justifications the activity of education is reduced to the process of learning and what risks such instrumental interpretation engenders. Then, these issues are analyzed and contextualized utilizing the material of the philosophical discussion of the 20th century - the critique of the progressive education in the analytic philosophy of education. By outlining the relevance of the arguments of discussion on manner/matter to realities of digital education, the issue of the dominance of the logic of learning in current education is analyzed. In the last section several adjustments to the contemporary discourse on digitalization of education are proposed, aimed at finding a balance between individual and social dimensions of the problem of matter of education, given the current tendency of mass personalization in education. Particularly, the importance of the idea of education as a common good in the contemporary educational discourse is claimed. (shrink)

The exact nature of the relation between science and Scripture in the thought of Francis Bacon is a well-studied but controversial field. In this paper, it is shown that Bacon, though convinced that there exists no enmity between the book of God's wisdom and the book of God's power, usually tries to separate knowledge acquired by reason from knowledge acquired by faith. In his exposition of the principle of the conservation of matter, however, Bacon seems to find himself (...) constrained to invoke Scriptural truths in a manner that he usually disapproves of. In order to establish this principle, which is so essential to his overall scientific program, he appeals both to the Bible and Greek mythology in a way that points to certain conceptual tensions within his natural philosophy. (shrink)

The use of ‘placebos’ in clinical practice is a source of continued controversy for physicians and medical ethicists. There is rarely any extensive discussion on what ‘placebos’ are and how they work. In this paper, drawing on Louhiala and Puustinen's work, the author proposes that the term ‘placebo effect’ be replaced in clinical contexts with the term ‘positive care effect’. Medical treatment always takes place in a ‘context of care’ that encompasses all the phenomena associated with medical intervention: it includes (...) the particular method of treatment, the interpersonal relationships between medical staff and the patient and other factors, including physicians' and patients' beliefs in the power of the treatment. Together, these phenomena can result in a full spectrum of therapeutic effects to the patient—from no effects, to small effects, to large effects. In cases where there are significant therapeutic benefits to the patient, ‘positive care effects’ may be spoken of. Since the ethical codes of the General Medical Council and the American Medical Association demand transparency with respect to patient treatment and insist on complete openness in ‘placebo’ usage, the author argues that, as a matter of conceptual rigour and consistency, if the term ‘placebo effect’ is replaced by ‘positive care effect’, these ethical codes appear to insist on transparency about all such beneficial components of treatment. Given that this appears to be a counterintuitive obligation, the author concludes the paper with some comments on the clinical consequences of this conceptual revision, including a brief discussion of how this important debate might develop. (shrink)

1. The philosophical version of the primary-secondary distinction concerns (a) the 'real' properties of matter, (b) the epistemology of sensation, and (c) a contrast challenged by Berkely as illusory. The scientific version of the primary-secondary distinction concerns (a') the physical properties of matter, (b') a contrast essential within the history of atomism, and (c') a contrast challenged by 20th century microphysics as de facto untenable. 2. The primary-secondary distinction within physics can be interpreted in two ways: a. it (...) can refer to content; e.g. 'Matter has the properties of mass, shape, density... etc. -- it only appears to have the properties of warmth, fragrance, etc.' Or, b. it can refer to form; e.g. 'Whatever properties our best theories accord to primary matter, e.g., electrons, these are by definition primary. All other properties of, e.g., macromatter, are derivative.' Concerning 2.a., this interpretation is simply false when 17th, 18th, or 19th century values for the property-variables are introduced. Concerning 2.b., this either uninformative or misleading. It is uninformative when it constitutes no more than a decision to use the word 'primary' as an umbrella-word for all the properties contemporary micro-physics accords to fundamental material particles, whatever these may be. It is misleading when it turns on an implicit contrast between certain properties particles may be said to have when 'harnessed' to a detector, and certain other properties these particles have when free and unharnessed to any detector. This contrast does not exist. Quantum-theoretic information is always about particles-and-their-detectors-in-combination. Dissolve this combination and you destroy any possible knowledge of the particle. Hence the notion of 'completely objectifiable properties of particles' is in principle unsound. (shrink)

The exact nature of the relation between science and Scripture in the thought of Francis Bacon is a well-studied but controversial field. In this paper, it is shown that Bacon, though convinced that there exists no enmity between the book of God's wisdom and the book of God's power, usually tries to separate knowledge acquired by reason from knowledge acquired by faith. In his exposition of the principle of the conservation of matter, however, Bacon seems to find himself (...) constrained to invoke Scriptural truths in a manner that he usually disapproves of. In order to establish this principle, which is so essential to his overall scientific program, he appeals both to the Bible and Greek mythology in a way that points to certain conceptual tensions within his natural philosophy. (shrink)

Research on quantum gravity has historically relied on appeals to guiding principles. This essay frames three such principles within the context of the condensed matter approach to QG. I first identify two distinct versions of this approach, and then consider the extent to which the principles of asymptotic safety, relative locality, and holography are supported by these versions. The general hope is that a focus on distinct versions of a single approach may provide insight into the conceptual and foundational (...) significance of these principles. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:In Dialogue:The Principle of Civility in Academic DiscourseForest HansenSeveral months ago New York Times columnist David Brooks addressed the lack of civility in recent public discourse. "So... you get narcissists who believe they or members of their party possess direct access to the truth.... You get people who prefer monologues to dialogue.... You get people who... loathe their political opponents."1One might think that by contrast academia, and especially (...) academic publications, would provide a bastion of civil discourse. Alas, even academia has been infiltrated. At least it so appears to me when I read some of what has been recently published in the name of the philosophy of music education.I find that disheartening.However one defines "philosophy," it minimally entails raising questions whose answers are reasonably debatable. The key word here is "reasonably." Those who are committed to philosophical activity criticize positions they oppose by formulating arguments, giving examples, calling on accepted facts, clarifying the meaning of terms, and bringing to bear the principles of formal and informal logic. And thus they open themselves to counter-criticism of the same [End Page 198] sort. Nowhere in this enterprise is there need—or room—for invective, sarcasm, name-calling, ad hominems, or any other kind of personal abuse. One might call this The Principle of Civility in Academic Discourse.Philosophy differs in this respect from polemics. In one of its senses "polemics" means "the art or practice of disputation or controversy," and so seems a close cousin to philosophy. However, while "philosophy" traces its etymological roots to "love" and "wisdom," "polemics" is derived from "war." Polemics is a kind of verbal warfare. Typically polemicists are willing to use any tool at their disposal—even underhanded ones—to "win" the war of ideas. Polemics in this usual sense dispenses with objectivity and fairness (though it may make such a pretense). In fact, people who mount personal attacks thereby reveal their lack of philosophical tools and diminish their argument.Distinguishing philosophy from polemics does not mean that all philosophical claims are equal. Some positions are stronger than others, some weaker. Some can be dismissed relatively out of hand if they are illogical or do not square with normal experience. But even when positions are inadequate, the persons who advance the positions deserve to be treated with courtesy, respect, and collegiality.Typically, people trained in philosophy assimilate this principle as a matter of course. They have learned that over the centuries great minds have disagreed about every philosophical issue—whether the make-up of ultimate reality, the nature and sources of knowledge, the existence of god, the justification of morality. So too with what the nature of music is, what music should be taught and how, what is the purpose of music education.No one has a corner on the answers to such questions. The floor should always be open to debate—to consideration of new proposals and reconsideration of old ones. In disciplines where some matters are more or less settled (as in natural science and mathematics), such arguments disappear and new quests hope to find new settled answers. But in philosophy, more fundamentally than in any other traditional academic discipline, the discussion, the reasoned argumentation, is ongoing.Many years ago Douglas Morgan, in his essay "Must Art Tell the Truth"2 eloquently captured this spirit of philosophy:Philosophy is itself to be conceived as an invitational, dialectical activity rather than as any system of dicta. A philosopher can be thought of as [one] who, far from commanding assent with any thunderous barrage of argumentative artillery, invites you to think [about] the world or some aspect of it in a somewhat different way. "Come in," [the philosopher] says cordially, "and welcome. Sit down. Let me mix you an idea. Sip this thought, and tell me how your own experience looks. If you should find my way of construing our [End Page 199] world unappetizing or unpromising, pray show me your way. Let us once again in the good old Greek way, dia-lego, talk it through together."Finally, The Principle of Civility in Academic Discourse ought to be conveyed in our classrooms, as we foster new generations in... (shrink)

I. Character of scientific knowledge -- motives -- II. Principles -- the two fundamental methods -- III. Positivism -- IV. Scientific analogy -- V. Criteria of truth -- VI. Matter -- quantity -- VII. Energy -- dynamism -- VIII. Mechanism -- IX. Law -- values -- X. Evolution -- XI. Postulates -- XII. Rationality of the world -- XIII. The external world.

I carry out in this paper a philosophical analysis of the principle of excluded middle (or, as it is often called in the version I favor here, principle of bivalence: any meaningful assertion is either true or false). This principle has been criticized, and sometimes rejected, on the charge that its validity depends on presuppositions that are not, some believe, universally obtainable; in particular, that any well-posed problem is solvable. My goal here is to show that, although (...) excluded middle does indeed rest on certain presuppositions, they do not have the character of hypotheses that may or may not be true, or matters of fact that may or may not be the case. These presuppositions have, I claim, a transcendental character. Hence, the acceptance of excluded middle does not necessarily require, as some have claimed, an allegiance to ontological realism or some sort of cognitive optimism, construed as factual theses concerning the ontological status of domains of objects and our capability of accessing them cognitively. DOI:10.5007/1808-1711.2011v15n2p333. (shrink)

I carry out in this paper a philosophical analysis of the principle of excluded middle. This principle has been criticized, and sometimes rejected, on the charge that its validity depends on presuppositions that are not, some believe, universally obtainable; in particular, that any well-posed problem is solvable. My goal here is to show that, although excluded middle does indeed rest on certain presuppositions, they do not have the character of hypotheses that may or may not be true, or (...) matters of fact that may or may not be the case. These presuppositions have, I claim, a transcendental character. Hence, the acceptance of excluded middle does not necessarily require, as some have claimed, an allegiance to ontological realism or some sort of cognitive optimism, construed as factual theses concerning the ontological status of domains of objects and our capability of accessing them cognitively. (shrink)

In legal orders around the world, commitments to democracy, liberalism and constitutionalism are increasingly eroding. Although political and constitutional theorists often lament this trend, they invariably adopt frameworks that are indifferent to these commitments. My aims in this article are both critical and constructive. As a critical matter, I will expose the indifference of the leading political and constitutional theories to the emergence, maintenance and refinement of liberal democratic constitutional orders. As a constructive matter, I will draw on (...) Immanuel Kant’s constitutional theory to explain why realizing such a form of governance is a public duty and why receding from it is a public wrong. (shrink)

In summary, the question of how to construe the procedure called reversibility cannot be given an absolute answer. No one moral interpretation of the principle is universally applicable, that is, applicable to all moral issues. The decision concerning which to apply cannot be made a priori, but only in context - that is, only when we are faced with a particular moral problem. Moreover, there appears to be no rule which would enable us to choose which version is correct (...) in a particular case. It is a matter of judgment.That the various versions represent a moral progression from lower to higher constructions is debatable. We have seen that the altruism of reversibility3 - the ethic of care - may recommend itself in some personal relations to the point of making either version of reversibility4 irrelevant. Similarly, it is not clear that reversibility3 is always higher than reversibility2. For example, parents in trying to decide what is morally best for a young child should often - in the spirit of the second construction - substitute the judgment of their mature selves for the judgment of the immature self of the child. Moreover, this substitution may not be justifiable in terms of either utility or autonomy.If I seem to have ignored reversibility1 in this discussion that is because I consider it outside morality: it is, if anything, a principle of self-interested calculation. If Baier is correct in holding that we teach children to think morally when we get them to take the standpoint of others, that requires, I believe, getting them beyond the stage of crude reciprocity. If Piaget and Kohlberg are correct in their developmental claims, we cannot immediately teach children reversibility4 but must help them progress through the other two versions. There is some basis for thinking that children can transcend egoism and sympathize with others much earlier than Kohlberg allows - an important consideration in the development of a system of moral education. That point has been pursued by Michael Pritchard in his critique of Kohlberg. Pritchard, p 44. My point is a different one: even granting Kohlberg's theory of development (which asserts, for example, that a particular cognitive ability is required to think like a Kantian), it does not follow that the moral thinking which accompanies the highest cognitive stage is morally superior to the moral thinking which accompanies the lesser cognitive stages. That it is cognitively easier to master reversibility3 than reversibility4 does not settle the question of which is morally superior. Rather than arguing about which moral version of reversibility is morally best- a pointless debate if the desirability of a version is understood as contingent upon appropriateness with respect to context - we should instead celebrate the richness of the concept of reversibility. In teaching students the moral point of view by getting them to put themselves in another's place, we would not be asking them to master a rigid formula, but rather to be sensitive to the decisional context and to make a thoughtful judgment about which version of reversibility is most appropriate to that context. We would not be teaching them either moral relativism or moral absolutism, but the complexity of trying to make a moral decision by applying an ancient and philosophically rich ethical principle. (shrink)

The series is devoted to the study of scientific and philosophical texts from the Classical and the Islamic world handed down in Arabic. Through critical text editions and monographs, it provides access to ancient scientific inquiry as it developed in a continuous tradition from Antiquity to the modern period. All editions are accompanied by translations and philological and explanatory notes.

Some time ago, Joel Katzav and Brian Ellis debated the compatibility of dispositional essentialism with the principle of least action. Surprisingly, very little has been said on the matter since, even by the most naturalistically inclined metaphysicians. Here, we revisit the Katzav–Ellis arguments of 2004–05. We outline the two problems for the dispositionalist identified Katzav in his 2004 , and claim they are not as problematic for the dispositional essentialist at it first seems – but not for the (...) reasons espoused by Ellis. (shrink)

In the first Critique, Kant attempts to prove what we can call the "Principle of Intensive Magnitudes," according to which every possible object of experience will possess a determinate "degree" of reality. Curiously, Kant argues for this principle by inferring from a psychological premise about internal sensations (they have intensive magnitudes) to a metaphysical thesis about external objects (they also have intensive magnitudes). Most commentators dismiss the argument as a failure. In this article I give a reconstruction of (...) Kant's argument that attempts to rehabilitate the argument back into his broader transcendental theory of experience. I argue that we can make sense of the argument's central inference by appeal to Kant's theory of empirical intuition and by an analysis of the way in which Kant thinks sensory matter constitutes our most basic representations of objects. (shrink)

Many theorists claim that justice is a question-begging concept that has no inherent substantive content. They point to disagreements among justice theorists themselves about basic aspects of the justice theory, such as the nature of corrective justice and the distinction between it and distributive justice, as even further reason to dismiss the concept of justice or to fill it with their preferred theoretical content. Yet most persons perceive that the concept of justice is not an empty shell. Since ancient times (...) it has been thought to encompass not merely a formal equality (treating like cases alike), but also a substantive equality grounded in the equal dignity of each human being which requires giving each person his or her "due" - what is his or hers as a matter of right - a requirement that is usually understood to be in direct conflict with the basic principles of aggregate social welfare theories such as utilitarianism or its modern variant, economic efficiency. The elaboration of this substantive equality and its implications for morality, justice, and law form the core of the natural-law or natural-right theories of law. In this article I build upon a summary and critique of John Finnis's natural law theory (1) to delineate the basic assumptions and principles of the natural law theory regarding the foundations of and relationships among morality, justice, and law; (2) to demonstrate the agreement of major natural law theorists, from Aristotle through Aquinas and Kant to Finnis, on these basic assumptions and principles; (3) to distinguish these basic assumptions and principles from those of the competing theories of utilitarianism and economic efficiency; and (4) to clarify the nature of and distinctions between the two basic divisions of substantive justice: distributive justice and interactive justice. I use the term "interactive justice" instead of the usual term, "corrective justice," since the former term is much more informative and precise in conveying the distinct nature and domain of this type of justice, whereas the latter term almost always misleads people into one or both of two related misconceptions: (1) that "corrective" justice is concerned solely with the correction of wrongful injuries and has nothing to say about the nature of the underlying wrongs or the prevention of their occurrence, and (2) that it is merely a remedial corollary of distributive justice which corrects deviations from the distributively just distribution. Distributive justice and interactive justice separately address the two fundamental problems of human existence, and they employ quite different criteria of equality to resolve those problems. Together, they seek to assure the attainment of the common good (the full realization, to the extent practicable, of each person's humanity) by providing each person with her fair share of the social stock of instrumental goods (positive freedom via distributive justice) and by securing her person and her existing stock of instrumental goods from interactions with others that are inconsistent with her status as a rational being with equal, absolute moral worth (negative freedom via interactive justice). (shrink)

In this chapter we first discuss the main principles of justice and note the standard objections to them, which we believe necessitate a hybrid approach. The hybrid account we defend is primarily based on the distributive principle of sufficientarianism, which we interpret as the idea that each country should have the means to provide a minimally decent quality of life for each of its citizens. We argue that sufficientarian considerations give good reason to think that what we call the (...) ‘ability to pay objection’ should be taken much more seriously in this debate. Following this, our account emphasises what we believe are the two most important moral desiderata in any attempt to distribute responsibility for dealing with climate change: the ability to mitigate the problem and the making of culpable contributions to the problem. After noting that our proposal includes enough detail to be a useful start for policy makers, we defend our account against some potential objections. (shrink)

This book offers a comprehensive account of logic that addresses fundamental issues concerning the nature and foundations of the discipline. The authors claim that these foundations can not only be established without the need for strong metaphysical assumptions, but also without hypostasizing logical forms as specific entities. They present a systematic argument that the primary subject matter of logic is our linguistic interaction rather than our private reasoning and it is thus misleading to see logic as revealing "the laws (...) of thought". In this sense, fundamental logical laws are implicit to our "language games" and are thus more similar to social norms than to the laws of nature. Peregrin and Svoboda also show that logical theories, despite the fact that they rely on rules implicit to our actual linguistic practice, firm up these rules and make them explicit. By carefully scrutinizing the project of logical analysis, the authors demonstrate that logical rules can be best seen as products of the so called reflective equilibrium. They suggest that we can profit from viewing languages as "inferential landscapes" and logicians as "geographers" who map them and try to pave safe routes through them. This book is an essential resource for scholars and researchers engaged with the foundations of logical theories and the philosophy of language. (shrink)

It has been a traditional claim that Descartes sought to construct a deductive scientific system in which everything could be deduced from a priori truths. I shall call this thesis strong a priorism. In view of the overwhelming amount of evidence that Descartes thought experience to be a necessary part of his method, the traditional interpretation has undergone several transformations. One interpretation resulting from this transformation holds that Descartes sought to prove the first principles of natural philosophy in an a (...) priori manner. I will call this interpretation weak a priorismk.My task in this paper is to show that the thesis of weak a priorismk is false. With a view to proving this, I will show that one of the very general principles of Cartesian natural philosophy, namely, the claim that the essence of matter is extension, could not have been, and was not meant to be, established in a purely a priorik way. (shrink)

It has been a traditional claim that Descartes sought to construct a deductive scientific system in which everything could be deduced from a priori truths. I shall call this thesis strong a priorism. In view of the overwhelming amount of evidence that Descartes thought experience to be a necessary part of his method, the traditional interpretation has undergone several transformations. One interpretation resulting from this transformation holds that Descartes sought to prove the first principles of natural philosophy in an a (...) priori manner. I will call this interpretation weak a priorismk.My task in this paper is to show that the thesis of weak a priorismk is false. With a view to proving this, I will show that one of the very general principles of Cartesian natural philosophy, namely, the claim that the essence of matter is extension, could not have been, and was not meant to be, established in a purely a priorik way. (shrink)

In the past decade, scholars such as Samuel Freeman, Martin O’Neill, Alan Thomas and others have argued that no matter how widely Rawls’s theory of justice (TJ) was understood as a defence of the welfare state (WS), the socio-economic system Rawls defends and always defended is property-owing democracy (POD). In this article I present the argument that Rawls did not defend POD in TJ. However, while the claim that it was POD the socio-economic system implied by the principle (...) of difference generated heated reactions by defenders of the WS, the argument I raise differs from most of them. In the article I maintain that, for Rawls, principles of justice underdetermine the choice of social systems, and that although this is true of both principles, it is especially true of the difference principle, whose ability to arbitrate between different social and economic policies is limited. I show how the attempt to uniquely determine the set of social and economic policies authorized by the difference principle clashes with what Rawls explicitly states in TJ and contrasts with central aspects of his sociological and political conception of socio-economic decision-making. Although my aim is to show that the difference principle itself does not discriminate among socio-economic systems, this does not preclude that additional reasons can help in narrowing the range of socio-economic systems allowed. With reference to the ideal of social union that Rawls expounds in the third part of TJ, I argue that TJ does, in fact, offer additional reasons to appraise the WS as preferable to POD. I maintain that the centrality Rawls attributes to the social unity of a just society provides the basis for an understanding of Rawls’s position towards POD after TJ. (shrink)

The axiomatic bases of Special Relativity Theory (SRT) are thoroughly re-examined from an operational point of view, with particular emphasis on the status of Einstein synchronization in the light of the possibility of arbitrary synchronization procedures in inertial reference frames. Once correctly and explicitly phrased, the principles of SRT allow for a wide range of “theories” that differ from the standard SRT only for the difference in the chosen synchronization procedures, but are wholly equivalent to SRT in predicting empirical facts. (...) This results in the introduction, in the full background of SRT, of a suitable synchronization gauge. A complete hierarchy of synchronization gauges is introduced and elucidated, ranging from the useful Selleri synchronization gauge (which should lead, according to Selleri, to a multiplicity of theories alternative to SRT) to the more general Mansouri–Sexl synchronization gauge and, finally, to the even more general Anderson–Vetharaniam–Stedman’s synchronization gauge. It is showed that all these gauges do not challenge the SRT, as claimed by Selleri, but simply lead to a number of formalisms which leave the geometrical structure of Minkowski spacetime unchanged. Several aspects of fundamental and applied interest related to the conventional aspect of the synchronization choice are discussed, encompassing the issue of the one-way velocity of light in inertial and rotating reference frames, the global positioning system (GPS)’s working, and the recasting of Maxwell equations in generic synchronizations. Finally, it is showed how the gauge freedom introduced in SRT can be exploited in order to give a clear explanation of the Sagnac effect for counter-propagating matter beams. (shrink)

Does the matter of the sensible world, for Plotinus as for Plato and Aristotle, exist without a cause of its existence? Long divided on the answer to that question, scholarly opinion now veers in favour of a derivation of matter from principles prior to matter, with disagreement limited to the details of the theory. What exactly is implied by the various passages of the Enneads where Plotinus writes of soul or physis in relation to `darkness' and `non-being', (...) matter and form? In the pages that follow, I argue that the soul's `making' of a `non-being' that by implication is matter, in Enn. III 9 [13] 3, is logically antecedent to the `making' of `visible form' ascribed to physis in Enn. III 8 [30] 2. A detailed study of the context and the syntax of the latter passage shows that, contrary to an interpretation put forward recently in this Journal, the two `makings' cannot be the same. (shrink)

I develop a critique of Hume’s infamous problem of induction based upon the idea that the principle of induction (PI) is a normative rather than descriptive claim. I argue that Hume’s problem is a false dilemma, since the PI might be neither a “relation of ideas” nor a “matter of fact” but rather what I call a contingent normative statement. In this case, the PI could be justified by a means-ends argument in which the link between means and (...) end is established solely by deductive reasoning. The means-ends argument is an elementary result from formal learning theory that you must be willing to make inductive generalizations if you want to be logically reliable in the types of examples Hume described. This justification of the PI avoids both horns of Hume’s dilemma. Since no contradiction ensues from rejecting logical reliability as an aim, the PI is contingent. Yet since the proof concerning the PI and logical reliability is not based on inductive reasoning, there is no threat of circularity. (shrink)

The primary purpose of this paper is to offer an interpretation of Descartes' proof of the existence of matter as found in Meditation VI--an interpretation that is, I believe, the only one consistent with the relevant texts. The one guiding principle I use in offering this interpretation is the principle of charity, that is, when one interprets any philosopher's argument, and unsound argument should not be accepted as his unless there is no alternative interpretive argument that is (...) both sound and consistent with the relevant texts of that philosopher. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Philosophy 44.2 (2006) 321-322 [Access article in PDF] Thomas Holden, The Architecture of Matter: Galileo to Kant. Oxford: Clarendon Press, 2004. Pp. x + 305. Cloth $74.00. Most scholars believe that the problem of infinite divisibility that plagued early modern natural philosophy was an entirely mathematical issue and, therefore, resulted from the short-comings of early modern mathematics. Accordingly, advances in geometry, topology and (...) the logic of infinity are often thought to lay this debate to rest, thereby reducing it to some quaint footnote in the history of natural philosophy. Thomas Holden, however, through thorough textual and philosophical analysis, convincingly argues that this debate was more metaphysical in nature than previously supposed. He shows how the various paradoxes concerning the structure of matter stem from two widely-accepted theses central to the new science. The first resulted from the early modern method of applying the principles of geometry to physics. This geometrical method dictated that bodies are metaphysically divisible (m-divisible) in infinitum, because they occupy regions of space that can, at least by the power of God, be subdivided into those parts occupying corresponding sub-regions of space, and those sub-parts into those sub-sub-parts occupying their respective corresponding sub-sub-regions of space in infinitum. The other thesis is that "the parts of material bodies are each concrete existents in their own right" (3). Such actual parts exist prior to any act of division, whereas parts that are only potential would not exist prior to division but only after a divisive act has occurred. Holden argues that the actual parts doctrine was a metaphysical thesis just as fundamental to Enlightenment natural philosophers as the geometrization of matter. Indeed, it is these two theses that came into conflict and gave rise to a plethora of antimonies at the heart of the new science.Holden should be applauded for the skill he employs in challenging the received scholarship. In chapter 1, after some historical and terminological preliminaries, Holden reconstructs several of the more popular paradoxes of material structure found throughout the period's vast literature and successfully shows how these paradoxes would not arise if the problems of material structure were merely mathematical. He shows how the metaphysical doctrine of actual parts gave rise to these difficulties because of its conflict with the assumed geometrical doctrine that extension is infinitely m-divisible. For example, some thought it followed from the actual parts doctrine that there must be an actual infinity of parts, because actual parts exist prior to any process of division and, therefore, in order for both actual parts and infinite m-divisibility to be true, there must be an actual infinity of parts. This raised issues about the intelligibility and piety of an actual infinite as well as issues about equal and unequal infinities, e.g., half an infinite number of parts would still be infinite but half as much as the whole collection of parts. Hence, this and other paradoxes would not arise in the absence of the actual parts doctrine, and so the debate is more metaphysical in nature than previously supposed. [End Page 321]Chapter 2 examines in more detail the actual parts metaphysic and how it leads to tension with infinite m-divisibility. Chapter 3 examines various "short-circuit" arguments designed to undermine the actual parts doctrine. And chapter 4 examines the actual parts doctrine via the argument from composition found in Kant's pre-critical work, Physical Monadology. In chapter 5, Holden briefly examines the potential parts doctrine and how some actual-parts partisans tried to undermine it. It is eventually concluded that actual-parts and potential-parts advocates are at an impasse due to the question-begging nature of their respective arguments. Finally, chapter 6 is "something of an addendum" (74), since it examines a fascinating synthesis of the two conflicting positions, viz. the Kant-Boscovich force-shell atom theory.Given that the book is about material structure, it is a propos that my critical comment is about the structure of the book. It seems... (shrink)

The paper delves into the methodological aspects of how foundational mathematical and physical tenets, most notably the principle of least action, are interpreted and assimilated within humanities discourse. The pursuit of the article’s objectives is driven by the necessity for a philosophical and methodological analysis of the current conceptual status of the principle of least action. This analysis is informed by cognitive-axiological and teleological imperatives of a “synthetic” development program for the principle. Any fundamental principle will (...) not have a definitive explanation, as otherwise it would not be fundamental, but in this case, some justification can be given based on deeper grounds discussed in the article. Drawing on the epistemological frameworks of French philosophers P. Hadot, E. Levinas, J. Bouveresse, and J.-T. Desanti, the article weaves together mathematical abstractions with human experience and philosophical doctrines with physical theories. J.-T. Desanti’s perspective on mathematical objects as an outcome of human activity is examined. Also scrutinized is B. Nicolescu’s concept of transdisciplinarity, which challenges the traditional subject-object dualism in science. The author’s methodological stance emerges from a dialectical viewpoint, one that eschews a simplistic dichotomy between materialism and idealism and is grounded in rigorous scientific inquiry and an exhaustive examination of the subject matter itself. The principle of least action, as a paramount principle in physics, is shown to exemplify a legacy of innovation, positioning it as both methodologically insightful and heuristically valuable. The paper also highlights how this principle diverges from the classical principle of economy. The broader goal – within the context of “sustainable development,” transdisciplinary studies, and creative industries – is to establish the principle of least action as a paradigmatic imperative for interaction within social and economic systems. The conclusions drawn from this study contribute to a deeper understanding of the principle’s essence, the nature of transdisciplinarity, and confront the vestiges of scientism in the humanities. (shrink)

The living world is an exciting and inexhaustible source of high performance solutions to the multitude of biological problems, which were attained as a result of a natural selection, during the millions and millions years evolution of life on Earth. This work presents and comments some examples of high performances of living beings, in the light of the universal principle governing the realm of living matter: Optimal Design Principle. At the same time, the transfer of these optimal (...) solutions, from living matter to the technologies, is also discussed. This transfer is offering new and fertile perspectives to future technologies, which must be more efficient, cheaper and in perfect harmony with the biosphere. (shrink)

In this paper the author analyzes the recent history of the concept of matter by examining two criteria, in-principle-observability and noncompositeness, for use of the term 'elementary particle'. Arguing that how these criteria are employed sheds light on a change in what matter means, the author draws three conclusions. Since the seventeenth century, in-principle-observability has undergone a progressive devaluation, if not abandonment, in favor of the criterion of theoretical simplicity. As a consequence, the concept of (...) class='Hi'>matter has undergone a "third phase" of dematerialization. Finally, the current concept of matter reveals a dilemma: if alleged elementary particles are verified through observation, they are composite and hence not elementary; if they are elementary, they are in-principle-unobservable. (shrink)

Satr al-awrah (Hijab /veiling) is one of the obligatory provisions for men and women in Islam. Satr al-awrah, as a religious/jurisprudential term, means covering the parts of the body (awrah) that should be covered by religion. Islamic jurisprudents have disagreed on whether satr al-awrah is a condition of validity for prayer. There are two basic approaches to this issue, one of which belongs to the public (jumhūr including the Hanafī, Shafiī and Hanbalī schools) and the other to the Mālikīs. According (...) to the majority (jumhūr), satr al-awrah is a validity condition of the prayer. Therefore, a prayer performed without fulfilling the satr al-awrah condition is not valid. A prayer performed in this way must be re-performed absolutely within or outside of time. There are two approaches in the Mālikī school regarding whether the satr al-awrah is a condition for the validity of the prayer. The first approach is (partly) the same as the jumhūr. According to the second approach (without any distinction between prayer and outside the prayer), satr al-awrah is a general obligation in Islam and is not a valid condition for prayer.According to the Mālikīs who accept this second view, it is sunnah to comply with the satr al-awrah condition in prayer. On the other hand, in the Mālikī school, awrah is divided into two as ʿawrah mughallaẓa and ʿawrah mukhaffafa in terms of its effect on the validity of prayer. The disagreement about whether the satr al-awrah is a condition of validity for the prayer is related to the ʿawrah mughallaẓa. On the other hand, there is an agreement that the ʿawrah mukhaffafa is not a condition for the validity of the prayer. The disagreement in the classical fiqh doctrine about whether the satr al-awrah is a condition for the validity of the prayer has some jurisprudential consequences. As a matter of fact, according to the majority, whether it is ʿawrah mughallaẓa or mukhaffafa, a prayer performed with an uncovered awrah is not valid and must be re-performed absolutely. In the Mālikī school, there are different opinions depending on whether it is ʿawrah mughallaẓa or mukhaffafa. If the place uncovered on the body is ʿawrah mughallaẓa; According to those who accept the satr al-awrah as a condition for the validity of the prayer, the prayer is not valid and must be re-performed absolutely. After the time has passed, the prayer does not have to be repeated. If the place uncovered on the body is ʿawrah mukhaffafa, according to all Mālikīs, unanimously the prayer is valid. Although it is recommended to reperformed it in time, it is not required to be returned after the time has passed. The following can be said about the practical examples of the disagreement in the classical fiqh doctrine regarding whether the satr al-awrah is a condition for the validity of the prayer, especially in terms of ʿawrah mukhaffafa: According to Mālikīs, who do not accept the validity of the satr al-awrah for prayer, it is valid for women to pray with their heads down, below the knees and with their arms uncovered. Again, according to them, it is valid for men to perform prayers with their thighs/hips (fakhz) uncovered, since it is considered one of the private parts. (shrink)

The difficulties often attributed to prime matter hold for all hylomorphic accounts of substantial change. If the substratum of substantial change actually persists through the change, then such change is merely another kind of accidental change. If the substratum does not persist, then substantial change is merely creation ex nihilo. Either way matter is an empty concept, explaining nothing. This conclusion follows from Aristotle’s homoeomerity principle, and attempts to evade this conclusion by relaxing the constraints Aristotle imposes (...) on elementhood, generation, and substrata all fail, and even the minimal constraints imposed by the Problem of Material Constitution are enough to generate the dilemma. -/- Aristotle resolves this dilemma in Physics I.9 by postulating pure potentiality-for-substance as the substratum of substantial change. Because the substratum persists, substantial change is not creation ex nihilo, but because it does not persist actually it is not a kind of accidental change. Aristotle uses this approach to solve the Problem of the Mixt and the Problem of Material Constitution without weakening his constraints on elementhood, generation, or substrata. This pure potentiality approach must be carefully distinguished from other ‘traditional’ or ‘prime matter’ views that posit some actuality for the substratum of substantial change, and it is best understood in light of the analogy found at Metaphysics Θ.6. Pure potentiality-for-substance can do the work needed in a substratum for substantial change because Aristotle is able to ground the identity, existence, and characterization of the substratum in the corrupting and generating substances rather than the substratum itself. (shrink)

The multidimensional nature of climate change makes it a complex matter, on both the theoretical and practical planes. The urgency and centrality of the issues and problems it poses are of key importance for our species and its survival. In this paper, we propose pairing the principle of common but differentiated responsibilities – the cornerstone of climate talks over the last thirty years – with the criterion of transgenerational responsibility. Such a criterion seeks to focus particular attention on (...) the issues of diachronic justice and, in particular, intergenerational justice. (shrink)

A theoretical physicist and feminist theorist, Karen Barad elaborates her theory of agential realism, a schema that is at once a new epistemology, ontology, and ethics.

This second book in the 'Middle Way Philosophy' series develops five general principles that are distinctive to the universal Middle Way as a practical response to absolutization. These begin with the consistent acknowledgement of human uncertainty (scepticism), and follow through with openness to alternative possibilities (provisionality), the importance of judging things as a matter of degree (incrementality), the clear rejection of polarised absolute claims (agnosticism) and the cultivation of cognitive and emotional states that will help us resolve conflict (integration).

There has been some controversy about whether or not in the 'Enneads' sensible matter is generated by a higher principle. If not, is sensible matter eternally self-subsisting? If so, what precisely is the manner of its generation? H.-R. Schwyzer argued that sensible matter is not generated because generation implies corruption. Kevin Corrigan, on the contrary, argued not only that sensible matter is generated but also that there are multiple generations of such matter. In this (...) paper, the authors re-examine some key texts and conclude that a careful reading of the 'Enneads' indicates that neither Schwyzer's nor Corrigan's account is plausible. Rather, in the 'Enneads' both intelligible matter and sensible matter are generated by higher principles in the sense that both eternally depend on these higher principles for their existence but not insofar as they have a beginning in time. Moreover, there is exactly one generation of sensible matter rather than multiple generations. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:In Dialogue:The Principle of Civility in Academic DiscourseForest HansenSeveral months ago New York Times columnist David Brooks addressed the lack of civility in recent public discourse. "So... you get narcissists who believe they or members of their party possess direct access to the truth.... You get people who prefer monologues to dialogue.... You get people who... loathe their political opponents."1One might think that by contrast academia, and especially (...) academic publications, would provide a bastion of civil discourse. Alas, even academia has been infiltrated. At least it so appears to me when I read some of what has been recently published in the name of the philosophy of music education.I find that disheartening.However one defines "philosophy," it minimally entails raising questions whose answers are reasonably debatable. The key word here is "reasonably." Those who are committed to philosophical activity criticize positions they oppose by formulating arguments, giving examples, calling on accepted facts, clarifying the meaning of terms, and bringing to bear the principles of formal and informal logic. And thus they open themselves to counter-criticism of the same [End Page 198] sort. Nowhere in this enterprise is there need—or room—for invective, sarcasm, name-calling, ad hominems, or any other kind of personal abuse. One might call this The Principle of Civility in Academic Discourse.Philosophy differs in this respect from polemics. In one of its senses "polemics" means "the art or practice of disputation or controversy," and so seems a close cousin to philosophy. However, while "philosophy" traces its etymological roots to "love" and "wisdom," "polemics" is derived from "war." Polemics is a kind of verbal warfare. Typically polemicists are willing to use any tool at their disposal—even underhanded ones—to "win" the war of ideas. Polemics in this usual sense dispenses with objectivity and fairness (though it may make such a pretense). In fact, people who mount personal attacks thereby reveal their lack of philosophical tools and diminish their argument.Distinguishing philosophy from polemics does not mean that all philosophical claims are equal. Some positions are stronger than others, some weaker. Some can be dismissed relatively out of hand if they are illogical or do not square with normal experience. But even when positions are inadequate, the persons who advance the positions deserve to be treated with courtesy, respect, and collegiality.Typically, people trained in philosophy assimilate this principle as a matter of course. They have learned that over the centuries great minds have disagreed about every philosophical issue—whether the make-up of ultimate reality, the nature and sources of knowledge, the existence of god, the justification of morality. So too with what the nature of music is, what music should be taught and how, what is the purpose of music education.No one has a corner on the answers to such questions. The floor should always be open to debate—to consideration of new proposals and reconsideration of old ones. In disciplines where some matters are more or less settled (as in natural science and mathematics), such arguments disappear and new quests hope to find new settled answers. But in philosophy, more fundamentally than in any other traditional academic discipline, the discussion, the reasoned argumentation, is ongoing.Many years ago Douglas Morgan, in his essay "Must Art Tell the Truth"2 eloquently captured this spirit of philosophy:Philosophy is itself to be conceived as an invitational, dialectical activity rather than as any system of dicta. A philosopher can be thought of as [one] who, far from commanding assent with any thunderous barrage of argumentative artillery, invites you to think [about] the world or some aspect of it in a somewhat different way. "Come in," [the philosopher] says cordially, "and welcome. Sit down. Let me mix you an idea. Sip this thought, and tell me how your own experience looks. If you should find my way of construing our [End Page 199] world unappetizing or unpromising, pray show me your way. Let us once again in the good old Greek way, dia-lego, talk it through together."Finally, The Principle of Civility in Academic Discourse ought to be conveyed in our classrooms, as we foster new generations in... (shrink)

In 1697, the publication of a letter from Leibniz to Bourguet in the Journal des Sçavants prompted a vigorous reply from the Cartesien Pierre-Sylvain Regis, leading to a public exchange between the two philosophers. The controversy ended with a contribution by Regis who seemingly got the final word. The exchange mainly focused on Descartes’s Principles of philosophy, III, art. 47, a text where Descartes held that the world would eventually take all the possible forms it is capable of. While Leibniz (...) maintained that this claim had inescapable Spinozistic consequences, Regis defended Descartes against the accusation. Each position relied on its own distinct conception of the world’s infinity. This chapter follows this controversy step by step. I show in particular that Leibniz, although he did not write it, had a forceful reply to Regis’s final published objections ready at hand, based on his rehabilitation of the notion of actual infinity. (shrink)

This paper traces the history of remoteness in contract law, namely the legal formants (in Rodolfo Sacco’s terms) constraining the availability of contract damages in various legal systems. Our journey takes us through different times, continents and cultures, from the eighteenth century to the twenty–first century, across the law of France, United States, England and Wales, India and Australia, among other jurisdictions. While it might seem that civilian and common law traditions have very different morphological legal forms, once a closer (...) historical, cultural, and anthropological gaze is turned upon the legal formants involved, it can be seen that remoteness discloses a shared concern which may be common to many human societies and cultures. In other words, as a matter of social experience, humans who enter into transactions generally realise that it is impossible to know the future, or to know what all outcomes of the transaction will be. Consequently, it is recognised that it would be unfair and unjust to hold a defendant liable for all outcomes, and as our journey will show, legal systems seek guidance from other legal systems in their efforts to deal with this problem. (shrink)

Background Infertility is an increasingly prevalent disease in society and is considered by the World Health Organization to be a public health problem. An important ethical issue arises from the clarification of reproductive rights in a fair and equal way. The objective of this study was to deepen and update the knowledge and discussion about the difficulty of accessing infertility treatments in Brazil. Methods A cross-sectional observational study was carried out through the application of an online questionnaire that collected the (...) socioeconomic characteristics of couples and identify how barriers to infertility care affect the most vulnerable populations. We included couples who sought medical assistance to achieve pregnancy at two clinics in the states of São Paulo and Minas Gerais. Results A total of 201 questionnaires were analyzed. Most couples self-declared as white and the average age of wives was 36 years and husbands 38 years. 65% (65%) of couples would proceed with the treatment in a different city to which they lived, 37% evaluated as having easy access to a medical specialist only after indication, and more than half of the participating have thought about giving up the treatment due to some difficulty in accessing it. 39% of participants sought more than one medical service to find better reception, 42% of couples sought more than one medical service to define where it would be better financially, and 67.2% referred to the high cost of treatments, that is, financial issues, as a great difficulty in accessing medical services and/or treatment. Although 72.6% of couples considered having a good quality of life, 54.2% admitted that infertility and the search for treatment generated anxiety/stress in the couple’s life. Conclusion There is a need for public education on reproductive health and for policymakers to raise awareness of the importance of the difficulty that many couples face in seeking treatment to become pregnant, especially in countries with less financial resources. Indeed, it is commonly accepted that there is a universal human right to access healthcare of appropriate quality as a matter of justice. Discussion of access to reproductive technologies should be considered taking into account the longstanding ethical debate regarding fertility, fecundity, and infertility, as well as reproductive care. (shrink)

In the Principles of Philosophy, Descartes attempts to explicate the well-known phenomena of varying bodily size through an appeal to the concept of "solidity," a notion that roughly corresponds to our present-day concept of density. Descartes' interest in these issues can be partially traced to the need to define clearly the role of matter in his natural laws, a problem particularly acute for the application of his conservation principle. Specifically, since Descartes insists that a body's "quantity of motion," (...) defined as the product of its "size" and speed, is conserved in all material interactions, it is imperative that he explain how solidity influences the magnitude of this force. As a means of resolving this problem, Descartes postulated an idealized condition of "perfect solidity" which correlates a body's "agitation" force (a forerunner of Newton's concept of non-accelerating, or "inertial" motion) with the interplay of its volume, surface area, and composition of minute particles. This essay explores this often misunderstood aspect of Descartes' physics, as well as the special function of idealized conditions in his collision rules. Contrary to those commentators who regard "perfect solidity" as a stipulation on bodily impact, this notion, it will be argued, is primarily concerned with the internal composition of macroscopic bodies, and only indirectly with their collision characteristics. Along the way, many of Descartes' hypotheses will be shown to display a level of sophistication and intricacy that, despite their essential incompatibility, belie several of the common misconceptions of Cartesian science. (shrink)