Albert Einstein’s bold assertion of the form invariance of the equation of a spherical light wave with respect to inertial frames of reference became, in the space of 6 years, the preferred foundation of his theory of relativity. Early on, however, Einstein’s universal light-sphere invariance was challenged on epistemological grounds by Henri Poincaré, who promoted an alternative demonstration of the foundations of relativity theory based on the notion of a light ellipsoid. A third figure of light, Hermann Minkowski’s lightcone also (...) provided a new means of envisioning the foundations of relativity. Drawing in part on archival sources, this paper shows how an informal, international group of physicists, mathematicians, and engineers, including Einstein, Paul Langevin, Poincaré, Hermann Minkowski, Ebenezer Cunningham, Harry Bateman, Otto Berg, Max Planck, Max von Laue, A. A. Robb, and Ludwig Silberstein, employed figures of light during the formative years of relativity theory in their discovery of the salient features of the relativistic worldview. (shrink)

This chapter discusses the roles of ether and electrons in relativity theory. One of the most radical moves made by Albert Einstein was to dismiss the ether from electrodynamics. His fellow physicists felt challenged by Einstein’s view, and they came up with a variety of responses, ranging from enthusiastic approval, to dismissive rejection. Among the naysayers were the electron theorists, who were unanimous in their affirmation of the ether, even if they agreed with other aspects of Einstein’s theory of relativity. (...) The eventual success of the latter theory (circa 1911) owed much to Hermann Minkowski’s idea of four-dimensional spacetime, which was portrayed as a conceptual substitute of sorts for the ether. (shrink)

The two greatest mathematicians of the early twentieth century, David Hilbert and Henri Poincaré transformed the mathematics of their time. Their personal interaction was infrequent, until Hilbert invited Poincaré to deliver the first Wolfskehl Lectures in Göttingen in the spring of 1909. A correspondence ensued, which fixed the content and timing of the lecture series. A close reading of the exchange throws light on what Hilbert wanted Poincaré to talk about, and on what Poincaré wanted to present to Hilbert and (...) his colleagues. To answer the latter question, reference is made to the published version of Poincaré’s six talks, with a focus on two of them, concerning the propagation of Hertzian waves, and the theory of relativity. (shrink)

Albert Einstein's bold assertion of the form-invariance of the equation of a spherical light wave with respect to inertial frames of reference became, in the space of six years, the preferred foundation of his theory of relativity. Early on, however, Einstein's universal light-sphere invariance was challenged on epistemological grounds by Henri Poincaré, who promoted an alternative demonstration of the foundations of relativity theory based on the notion of a light-ellipsoid. Drawing in part on archival sources, this paper shows how an (...) informal, international group of physicists, mathematicians, and engineers, including Einstein, Paul Langevin, Poincaré, Hermann Minkowski, Ebenezer Cunningham, Harry Bateman, Otto Berg, Max Planck, Max Laue, A. A. Robb, and Ludwig Silberstein, employed figures of light during the formative years of relativity theory in their discovery of the salient features of the relativistic worldview. (shrink)

In the early 1880s, Henri Poincaré discovered an equilibrium figure for uniformly-rotating fluid masses—the pear, or piriform figure—and speculated that in certain circumstances the pear splits into two unequal parts, and provides thereby a model for the origin of binary stars. The contemporary emergence of photometric and spectroscopic studies of variable stars fueled the first models of eclipsing binaries, and provided empirical support for a realist view of equilibrium figures—including the pear—in the cosmic realm. The paper reviews astrophysical interpretation of (...) the Poincaré pear and the Poincaré-Darwin fission hypothesis with respect to research on variable stars from 1885 to 1901. (shrink)

The law of gravitational attraction is a window on three formal approaches to laws of nature based on Lorentz-invariance: Poincaré’s four-dimensional vector space (1906), Minkowski’s matrix calculus and spacetime geometry (1908), and Sommerfeld’s 4-vector algebra (1910). In virtue of a common appeal to 4-vectors for the characterization of gravitational attraction, these three contributions track the emergence and early development of four-dimensional physics.

This letter corrects errors of fact contained in a review by Yves Gingras of a biopic about Henri Poincaré.

The reception of Poincaré’s conventionalist doctrine of space by mathematicians is studied for the period 1891–1911. The opposing view of Riemann and Helmholtz, according to which the geometry of space is an empirical question, is shown to have swayed several geometers. This preference is considered in the context of changing views of the nature of space in theoretical physics, and with respect to structural and social changes within mathematics. Included in the latter evolution is the emergence of non-Euclidean geometry as (...) a new sub-discipline. (shrink)

Recently-discovered manuscripts throw new light on Poincaré’s discovery of the Lorentz group, and his ether-based interpretation of the Lorentz transformation. At first, Poincaré postulated longitudinal contraction of bodies in motion with respect to the ether, and ignored time deformation. In April, 1909, he acknowledged temporal deformation due to translation, obtaining thereby a theory of relativity more compatible with those of Einstein and Minkowski.

Neuromarketing is an emerging field in which academic and industry research scientists employ neuroscience techniques to study marketing practices and consumer behavior. The use of neuroscience techniques, it is argued, facilitates a more direct understanding of how brain states and other physiological mechanisms are related to consumer behavior and decision making. Herein, we will articulate common ethical concerns with neuromarketing as currently practiced, focusing on the potential risks to consumers and the ethical decisions faced by companies. We argue that the (...) most frequently raised concerns—threats to consumer autonomy, privacy, and control—do not rise to meaningful ethical issues given the current capabilities and implementation of neuromarketing research. But, we identify how potentially serious ethical issues may emerge from neuromarketing research practices in industry, which are largely proprietary and opaque. We identify steps that can mitigate associated ethical risks and thus reduce the threats to consumers. We conclude that neuromarketing has clear potential for positive impact on society and consumers, a fact rarely considered in the discussion on the ethics of neuromarketing. (shrink)

Beyond Einstein: Perspectives on Geometry, Gravitation, and Cosmology explores the rich interplay between mathematical and physical ideas by studying the interactions of major actors and the roles of important research communities over the course of the last century.

The bulk of the DNA in eukaryotic chromatin behaves as if it is topologically relaxed; however, a subfraction can be shown to be under suercoil tension. Endonuclease S1 cuts at specific hypersentive sites in chromatin (in the promoter regions of active genes) and this enzyme cuts in the same region in supercoiled plasmids, but not in relaxed or linearized molecules. A subfraction of the minichromosomes formed after SV40 infection or microinjection of plasmid DNA into oocytes contains supercoil tension and this (...) subfraction is thought to play an important role in transcription. (shrink)

When William James published Pragmatism, he gave it a subtitle: A New Name for Some Old Ways of Thinking. In this article, I argue that pragmatism is an epistemological method for articulating success in, and between, a plurality of practices, and that this articulation helped James develop radical empiricism. I contend that this pluralistic philosophical methodology is evident in James’s approach to philosophy of religion, and that this method is also exemplified in the work of one of James’s most famous (...) students, W.E.B. Du Bois, specifically in the closing chapter of The Souls of Black Folk, “Of the Sorrow Songs.” I argue that “Sorrow Songs” can be read as an epistemological text, and that once one identifies the epistemic standards of pragmatism and radical empiricism in the text, it’s possible to identify an implicit case for moderate fideism in “Sorrow Songs.” I contend that this case illuminates the pluralistic philosophical methodology James worked throughout his career to develop, and that the James-Du Bois approach to philosophy may even help locate the epistemic value of other religious practices, beyond the singing of hymns, and identify terrain mainstream philosophy has long neglected. (shrink)

Political theorists advocating the abolition of instrumental uses of groups of animals are divided with respect to how they evaluate welfare reforms. Radical abolitionists maintain that welfare reforms are only dubiously described as moral improvements while pragmatic abolitionists maintain that welfare reforms are moral improvements, even if the conditions they permit are unjust. This article examines Wyckoff’s interest model against the case of a Cincinnati coalition’s efforts to reform the local food chain. This article argues that the coalition’s program of (...) choice is a welfare reform and that the interest model must evaluate the program as a moral improvement. This article concludes that if the interest model is the most appropriate political theory of animal rights, pragmatic abolitionism is philosophically more appropriate than radical abolitionism. (shrink)

In this paper, our goal is to survey some of the legal contexts within which violence risk assessment already plays a prominent role, explore whether developments in neuroscience could potentially be used to improve our ability to predict violence, and discuss whether neuropredictive models of violence create any unique legal or moral problems above and beyond the well worn problems already associated with prediction more generally. In Violence Risk Assessment and the Law, we briefly examine the role currently played by (...) predictions of violence in three high stakes legal contexts: capital sentencing, civil commitment hearings, and sexual predator statutes. In Clinical vs. Actuarial Violence Risk Assessment, we briefly examine the distinction between traditional clinical methods of predicting violence and more recently developed actuarial methods, exemplified by the Classification of Violence Risk software created by John Monahan and colleagues as part of the MacArthur Study of Mental Disorder and Violence [1]. In The Neural Correlates of Psychopathy, we explore what neuroscience currently tells us about the neural correlates of violence, using the recent neuroscientific research on psychopathy as our focus. We also discuss some recent advances in both data collection and data analysis that we believe will play an important role when it comes to future neuroscientific research on violence. In The Potential Promise of Neuroprediction, we discuss whether neuroscience could potentially be used to improve our ability to predict future violence. Finally, in The Potential Perils of Neuroprediction, we explore some potential evidentiary, constitutional, and moral issues that may arise in the context of the neuroprediction of violence. (shrink)

William James advocated a form of finite theism, motivated by epistemological and moral concerns with scholastic theism and pantheism. In this article, I elaborate James’s case for finite theism and his strategy for dealing with these concerns, which I dub the problems of suffering. I contend that James is at the very least implicitly aware that the problem of suffering is not so much one generic problem but a family of related problems. I argue that one of James’s great contributions (...) to philosophical theism is his advocacy for the view that adequate theistic philosophizing is not so much about cracking this family of problems, but finding a version of the problem to embrace. (shrink)

According to the conventionalist doctrine of space elaborated by the French philosopher-scientist Henri Poincaré in the 1890s, the geometry of physical space is a matter of definition, not of fact. Poincaré’s Hertz-inspired view of the role of hypothesis in science guided his interpretation of the theory of relativity (1905), which he found to be in violation of the axiom of free mobility of invariable solids. In a quixotic effort to save the Euclidean geometry that relied on this axiom, Poincaré extended (...) the purview of his doctrine of space to cover both space and time. The centerpiece of this new doctrine is what he called the ‘‘principle of physical relativity,’’ which holds the laws of mechanics to be covariant with respect to a certain group of transformations. For Poincaré, the invariance group of classical mechanics defined physical space and time (Galilei spacetime), but he admitted that one could also define physical space and time in virtue of the invariance group of relativistic mechanics (Minkowski spacetime). Either way, physical space and time are the result of a convention. (shrink)

This paper assumes the significance of Rousseau's Emile for the practice of radical education in the USA in the 1960s and 1970s. It is argued that the educational philosophy espoused in Emile is far more conservative than that actually attributed to his inspiration by some radical educators.

Epistemologists of religion disagree about what evidential value religious experiences have. Some argue that religious experiences have no evidential value while others argue that religious experiences constitute proof of God’s existence. This book argues that religious experiences can contribute to justificatory cases for belief in God in several distinct ways and that several justificatory cases are philosophically viable. This book contends that this joint justificatory viability is best explained by the diversity and development of religious lives: as religious believers grow (...) in a faith tradition, their access to an evidential base can develop and the contributory work religious experiences provide in defense of religious belief can change. This suggests that various epistemologies of religious experience implicitly emphasize different life stages or different prototypical religious believers and that a fully adequate epistemology of religious experience will be expansive, pluralistic, and responsive to the diversity of religious believers and their development in a religious tradition. (shrink)

The four Books numbered XI. to XIV. in the extant collection of Sibylline Oracles present, under the transparent disguise of prophecy, a summary of the world's history, concluded, in the last fourteen lines of Book XIV., by a short prediction of an ideal future. The chronicle of events, as it now stands, runs continuously from the Flood and the Tower of Babel to some date not hitherto determined, but certainly not earlier than 266 A.D.

According to the conventionalist doctrine of space elaborated by the French philosopher-scientist Henri Poincaré in the 1890s, the geometry of physical space is a matter of definition, not of fact. Poincaré’s Hertz-inspired view of the role of hypothesis in science guided his interpretation of the theory of relativity (1905), which he found to be in violation of the axiom of free mobility of invariable solids. In a quixotic effort to save the Euclidean geometry that relied on this axiom, Poincaré extended (...) the purview of his doctrine of space to cover both space and time. The centerpiece of this new doctrine is what he called the ‘‘principle of physical relativity,’’ which holds the laws of mechanics to be covariant with respect to a certain group of transformations. For Poincaré, the invariance group of classical mechanics defined physical space and time (Galilei spacetime), but he admitted that one could also define physical space and time in virtue of the invariance group of relativistic mechanics (Minkowski spacetime). Either way, physical space and time are the result of a convention. (shrink)

As the abolition of gold cannot directly cause the restoration of a ruined city, the word γάρ must be taken as referring back to 1. 348: ‘Enemies will make peace; for gold, the cause of quarrels, will be abolished.’ But the awkwardness of the connexion suggests a suspicion that the passage has been in some way altered or rearranged.

As the abolition of gold cannot directly cause the restoration of a ruined city, the word γάρ must be taken as referring back to 1. 348: ‘Enemies will make peace; for gold, the cause of quarrels, will be abolished.’ But the awkwardness of the connexion suggests a suspicion that the passage has been in some way altered or rearranged.

Boolean-valued models of set theory were independently introduced by Scott, Solovay and Vopěnka in 1965, offering a natural and rich alternative for describing forcing. The original method was adapted by Takeuti, Titani, Kozawa and Ozawa to lattice-valued models of set theory. After this, Löwe and Tarafder proposed a class of algebras based on a certain kind of implication which satisfy several axioms of ZF. From this class, they found a specific 3-valued model called PS3 which satisfies all the axioms (...) of ZF, and can be expanded with a paraconsistent negation *, thus obtaining a paraconsistent model of ZF. The logic (PS3 ,*) coincides (up to language) with da Costa and D'Ottaviano logic J3, a 3-valued paraconsistent logic that have been proposed independently in the literature by several authors and with different motivations such as CluNs, LFI1 and MPT. We propose in this paper a family of algebraic models of ZFC based on LPT0, another linguistic variant of J3 introduced by us in 2016. The semantics of LPT0, as well as of its first-order version QLPT0, is given by twist structures defined over Boolean agebras. From this, it is possible to adapt the standard Boolean-valued models of (classical) ZFC to twist-valued models of an expansion of ZFC by adding a paraconsistent negation. We argue that the implication operator of LPT0 is more suitable for a paraconsistent set theory than the implication of PS3, since it allows for genuinely inconsistent sets w such that [(w = w)] = 1/2 . This implication is not a 'reasonable implication' as defined by Löwe and Tarafder. This suggests that 'reasonable implication algebras' are just one way to define a paraconsistent set theory. Our twist-valued models are adapted to provide a class of twist-valued models for (PS3,*), thus generalizing Löwe and Tarafder result. It is shown that they are in fact models of ZFC (not only of ZF). (shrink)

François Jullien intervenes into the ontology debates to understand Chinese thought as an anti-ontology, but instead in terms of ‘life’, that is as a sort of vitalism. Chinese anti-ontology features the juxtaposition of the wu (there-is-not) with the you (there-is). This, I argue, maps onto theology’s counterposition of otherworldly and this-worldly. Here Daoism features an ascetic and unstratified wu in contraposition to Confucianism’s you of moderation and stratification. We contrast ontology’s causation with ‘efficacy’ in Jullien’s Chinese thought. We read Zhuangzi’s (...) ‘Equalization of Things’, where the inequalities of the you are equalized in the wu, as a sort of vitalist object energetics. We turn to Chinese ethics, and its driving virtue of yi. We understand the yi not as ‘righteousness’, which is a theological attribute of Christ, but instead as closer to political ‘right’, in China embedded in immanentist forms of life. Western Cartesian ontology is often contrasted with Chinese thought that works through a certain ‘analogism’. We read this, with Walter Benjamin’s Chinese ‘mimetic’ faculty, in terms of a vitalist energetics, a forcefield of the Ten Thousand Things. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Rhetoric 37.1 (2004) 42-71 [Access article in PDF] Narrative as Argument in Indian Philosophy: The Astavakra Gita as Multivalent Narrative Scott R. Stroud Department of Philosophy Temple University Indian philosophy has often been described as radically different in nature than Western philosophy due to its frequent use of narrative structure. By employing poetic elements in their use of language, such texts attempt to convey deep metaphysical (...) truths and philosophical positions about reality that are in many cases quite different from Western ideas (Babbili 1997). Often, these ways of conveying truths are an integral part of that truth. One particularly useful form is narrative, taking instantiations such as a dialogue between characters. Philosophical dialogues such as the Bhagavad Gita and the Astavakra Gita (also known as the Astavakra Samhita ) use a portrayed conversation involving a guru or deity to convey didactic lessons and values to the receptive audience, both ancient and modern. As texts such as the Bhagavad Gita gain in popularity and circulation in the Western world (Minor 1982; Paine 1998; Sharpe 1985), philosophical and rhetorical inquiry must be extended to explain how these texts function in an argumentative philosophical context.Stroud (2002a, 2002b) has advanced the idea that such ancient Indian narratives argue through the use of contradictions and conflicting value structures;1 he labels such texts as multivalent narratives since their use of contradictory value structures compel audience members to reconstruct the narrative's message and allow for the acceptance of novel views. Multivalent narratives are to be distinguished from polysemic narratives (Fiske 1986) in that the latter concern different audience members finding a preferred position from the ambiguous story. Polysemic narratives involve the difference in meaning of the same story to different auditors. Condit criticizes this notion of polysemic narratives and advances her own concept of polyvalent narratives. The concept of a polyvalent narrative involves different auditors understanding the same story in similar ways, but differing in how they evaluate its message. Condit's research with a popular television [End Page 42] show and two students from radically different backgrounds on abortion finds that they understood what occurred in a very similar fashion; they differed in that they "disagree[d] about the valuation of those denotations to such a degree that they produce[d] noticeably different interpretations" (1989, 106). Thus, the auditors differ as to their response to a certain story and how it treats their own cherished values. Stroud (2002a) provides a thorough justification as to why the concepts of polysemic and polyvalent narratives do not capture what can be called multivalent narratives. The important factor in distinguishing these three concepts is that the third involves contradictions at the level of values within a text and the reader's necessitated activity of trying to synthesize or reconcile such contradictions. It is this activity that is the hallmark of multivalent narratives.This employment of multivalent narrative offers a challenge to familiar Western conceptions of argumentative discourse and demands further investigation. This study explores the ways a particular text, the Astavakra Gita, argues its philosophical positions to its audience of potential "pupils."2 Using the insights provided by theories of narrative and reader-response theory, I will argue that this text advances its claims not through overt syllogism or validity claim redemption, but through textual indeterminacy between the audience's disposition and the foregrounded theme of non-individuation in the text. This tension, increased by certain textual devices, results in consistency building by the audience, which enables the transcendence of these two viewpoints (reader and text); it is this experience, not claim, that the Astavakra Gita seems to be advancing to any given audience.In order to explore this interpretation of this text and its argumentative relationship to an audience, insights from both literary studies and rhetorical theory must be used in laying a foundation. The work of Wolfgang Iser (1980, 1989, 1993) and Walter Fisher (1987) will assume roles of particular importance in this endeavor. Iser's theory of aesthetic response provides a useful description of the phenomenological process of reading such a... (shrink)

ABSTRACT What are the obstacles to believing that narratives can argue? How can we be assured that narratives argue well? This article will explore major objections to accounts of narrative argument and literary truth, and explore a theory of narrative reasoning that emphasizes identification as a vital part of argument. In exploring the account of narrative offered by Walter Fisher in light of concerns with narrative in rhetorical studies and philosophy, I explicate a renewed sense of identification and narrative (...) reasoning that can meet many of these objections to giving narrative a role in human communication and argument. Of particular interest are the resources available in narratives for active identification by an auditor or reader as good reasons for action or belief in their own extratextual activities. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Philosophy and Rhetoric 37.1 (2004) 42-71 [Access article in PDF] Narrative as Argument in Indian Philosophy: The Astavakra Gita as Multivalent Narrative Scott R. Stroud Department of Philosophy Temple University Indian philosophy has often been described as radically different in nature than Western philosophy due to its frequent use of narrative structure. By employing poetic elements in their use of language, such texts attempt to convey deep metaphysical (...) truths and philosophical positions about reality that are in many cases quite different from Western ideas (Babbili 1997). Often, these ways of conveying truths are an integral part of that truth. One particularly useful form is narrative, taking instantiations such as a dialogue between characters. Philosophical dialogues such as the Bhagavad Gita and the Astavakra Gita (also known as the Astavakra Samhita ) use a portrayed conversation involving a guru or deity to convey didactic lessons and values to the receptive audience, both ancient and modern. As texts such as the Bhagavad Gita gain in popularity and circulation in the Western world (Minor 1982; Paine 1998; Sharpe 1985), philosophical and rhetorical inquiry must be extended to explain how these texts function in an argumentative philosophical context.Stroud (2002a, 2002b) has advanced the idea that such ancient Indian narratives argue through the use of contradictions and conflicting value structures;1 he labels such texts as multivalent narratives since their use of contradictory value structures compel audience members to reconstruct the narrative's message and allow for the acceptance of novel views. Multivalent narratives are to be distinguished from polysemic narratives (Fiske 1986) in that the latter concern different audience members finding a preferred position from the ambiguous story. Polysemic narratives involve the difference in meaning of the same story to different auditors. Condit criticizes this notion of polysemic narratives and advances her own concept of polyvalent narratives. The concept of a polyvalent narrative involves different auditors understanding the same story in similar ways, but differing in how they evaluate its message. Condit's research with a popular television [End Page 42] show and two students from radically different backgrounds on abortion finds that they understood what occurred in a very similar fashion; they differed in that they "disagree[d] about the valuation of those denotations to such a degree that they produce[d] noticeably different interpretations" (1989, 106). Thus, the auditors differ as to their response to a certain story and how it treats their own cherished values. Stroud (2002a) provides a thorough justification as to why the concepts of polysemic and polyvalent narratives do not capture what can be called multivalent narratives. The important factor in distinguishing these three concepts is that the third involves contradictions at the level of values within a text and the reader's necessitated activity of trying to synthesize or reconcile such contradictions. It is this activity that is the hallmark of multivalent narratives.This employment of multivalent narrative offers a challenge to familiar Western conceptions of argumentative discourse and demands further investigation. This study explores the ways a particular text, the Astavakra Gita, argues its philosophical positions to its audience of potential "pupils."2 Using the insights provided by theories of narrative and reader-response theory, I will argue that this text advances its claims not through overt syllogism or validity claim redemption, but through textual indeterminacy between the audience's disposition and the foregrounded theme of non-individuation in the text. This tension, increased by certain textual devices, results in consistency building by the audience, which enables the transcendence of these two viewpoints (reader and text); it is this experience, not claim, that the Astavakra Gita seems to be advancing to any given audience.In order to explore this interpretation of this text and its argumentative relationship to an audience, insights from both literary studies and rhetorical theory must be used in laying a foundation. The work of Wolfgang Iser (1980, 1989, 1993) and Walter Fisher (1987) will assume roles of particular importance in this endeavor. Iser's theory of aesthetic response provides a useful description of the phenomenological process of reading such a... (shrink)

My essay attempts humbly to honor and celebrate the voice of Charles Scott by thematizing one of the major insights of his body of work, namely the significance of the middle voice. I attempt in various ways to show the significance of the middle voice in the work of Charles Scott and to offer some commentary on what is meant by the middle voice. Finally, I ask about the implications of a middle-voiced philosophy for an understanding of the (...) self of human beings and for an understanding of the theme of indifference in relation to the lives of things that Scott addresses in his later work. (shrink)

My essay attempts humbly to honor and celebrate the voice of Charles Scott by thematizing one of the major insights of his body of work, namely the significance of the middle voice. I attempt in various ways to show the significance of the middle voice in the work of Charles Scott and to offer some commentary on what is meant by the middle voice. Finally, I ask about the implications of a middle-voiced philosophy for an understanding of the (...) self of human beings and for an understanding of the theme of indifference in relation to the lives of things that Scott addresses in his later work. (shrink)

Heintz & Scott-Phillips provide a useful synthesis for constructing a bridge between work by both cognitive scientists and evolutionary biologists studying the diversity of human communication. Here, we aim to strengthen their bridge from the side of evolutionary biology, to argue that we can best understand ostensive communication as a scaffold for more complex forms of intentional expressions.

The Polish logician Roman Suszko has extensively pleaded in the 1970s for a restatement of the notion of many-valuedness. According to him, as he would often repeat, “there are but two logical values, true and false.” As a matter of fact, a result by W´ojcicki-Lindenbaum shows that any tarskian logic has a many-valued semantics, and results by Suszko-da Costa-Scott show that any many-valued semantics can be reduced to a two-valued one. So, why should one even consider using logics with (...) more than two values? Because, we argue, one has to decide how to deal with bivalence and settle down the tradeoff between logical 2-valuedness and truth-functionality, from a pragmatical standpoint. -/- This paper will illustrate the ups and downs of a two-valued reduction of logic. Suszko’s reductive result is quite non-constructive.We will exhibit here a way of effectively constructing the two-valued semantics of any logic that has a truth-functional finite-valued semantics and a sufficiently expressive language. From there, as we will indicate, one can easily go on to provide those logics with adequate canonical systems of sequents or tableaux. The algorithmic methods developed here can be generalized so as to apply to many non-finitely valued logics as well —or at least to those that admit of computable quasi tabular two-valued semantics, the so-called dyadic semantics. (shrink)

If we attempt to unify the theoretical efforts that appreciate a specific social activity in play, we can sketch the perspective of an entire anthropology of play into cohesive parts deriving from the knowledge of collective experience. This preoccupation is, in fact, two-fold. On the one hand is the comprehensive description of the relationship between life styles and their stylizations in everyday practices and customs as well as in cultural works, and on the other are social sensitivities and representations that (...) are relatively shared by individuals grouped in human communities. This very general framework encourages situating the presence of play as one of the concrete manifestations of an emotional core, converting primitively negative impulses into attractive forces which, because of this, becomes the seat of all human interaction and agitation, the energetic heart of social power. (shrink)

It’s often claimed that some people—fundamentalists or fanatics—are indeed sealed off from rational criticism. And every month new pop psychology books appear, describing the dumb ways ordinary people make decisions, as revealed by psychological experiments. The conclusion is that all or most people are fundamentally irrational. -/- Ray Scott Percival sets out to demolish the whole notion of the closed mind and of human irrationality. There is a difference between making mistakes and being irrational. Though humans are prone to (...) mistakes, they remain rational. In fact, making mistakes is a sign of rationality: a totally non-rational entity could not make a mistake. -/- Rationality does not mean absence of error; it means the possibility of correcting error in the light of criticism. In this sense, all human beliefs are rational: they are all vulnerable to being abandoned when shown to be faulty. -/- Percival agrees that people cling stubbornly to their beliefs, but he maintains, first, that not being too ready to abandon one’s beliefs is rational, and second, that people do not cling to their beliefs indefinitely or “come what may.” The illusion that they do can be dispelled by examining what really goes on in the formation and abandonment of beliefs, and here we need to observe the high rate of turnover in membership of ideological movements, as well as their numerous splits and schisms. -/- Percival examines and refutes the arguments of writers who have upheld the Irrationality or Closed Mind thesis, including Raymond Boudon, Serge Chakotin, Richard Dawkins, Jon Elster, Ernest Gellner, Adolf Hitler, Leszek Kolakowski, Walter Laqueur, Gustav Le Bon, Karl Popper, and Max Weber. -/- A key aspect of Percival’s approach is to identify “the persuader’s predicament,” the situational logic of the propagandist. Percival contends that a propagandist is faced with a trade-off between his message being closed to criticism and the message reaching and converting as many people as possible. It is possible to make a belief system more closed to criticism, but only by limiting the wide dissemination of the system. Percival illustrates the way belief systems adapt to criticism by an examination of two ideologies, Marxism and Freudianism, and by various examples drawn from the history of religion. (shrink)

In the opening episode of season four of the AMC network’s television show Breaking Bad, the attentive viewer reaches a point at which it’s difficult to see how the show’s heroes, Walter White and Jesse Pinkman, will escape death. The two are chemists and manufacturers of crystal methamphetamine for drug kingpin Gus Fring. At the end of the previous season they had picked up on Fring’s plans to kill them and replace them with another chemist, Gale Boetticher, who by (...) then had learned their development technique and could presumably produce the same high quality of drug. In response, Walt had Jesse race to Gale’s apartment and kill him, thus rendering Gus’s plan ineffective.The fourth season begins with Walt and... (shrink)

A festschrift for Dorothy Edgington, containing contributions from Cleo Condoravdi, Dorothy Edgington, Kit Fine, Alan Hájek, John Hawthorne, Sabine Iatridou, Nick Jones, Rosanna Keefe, Angelika Kratzer, David Over, Daniel Rothschild, Robert Stalnaker, Scott Sturgeon, and Timothy Williamson.

Natalie Davis is a quintessential storyteller in the way theorized by Walter Benjamin, Hannah Arendt, and Michel de Certeau. Her work decenters history not simply because it grants agency and so historical visibility to those who have been hidden from history or left on its margins, but also because her stories reveal the complexities of human experience and so challenge the received categories with which we are accustomed to thinking about the world.

Because idealism takes mind to be a fundamental reality, one would expect idealistically oriented philosophers to be especially alert to how mind actually occurs. However, like philosophers generally, most idealists study consciousness exclusively from the standpoint of focused and structured states of mind, using such cases as paradigmatic. Whether we examine Plato, Berkeley, Kant, Fichte, Husserl, or any other philosopher with idealistic tendencies, their accounts of mind take concepts like knowing, self, identity, and intentionality to be central. As a result, (...) such accounts virtually always interpret consciousness as unitary and egological. Although this interpretive tradition pervades philosophical understandings of mind, Charles Scott’s radical and important book provides strong reasons for skepticism about its adequacy. This rich and interesting volume consists of five essays, each of which takes up a distinct theme: “Interpreting,” “Being One and Being Many,” “Accord and Discord on the Border,” “Utter Darkness and Utter Light,” and “Being Aware.” Written separately, these essays share a common philosophical approach and a related set of themes: interpretation, difference, wholeness, language, and history, among others. Taken together, they offer a startling and powerful way of conceiving mind. (shrink)