Einstein, in his “Zur Elektrodynamik bewegter Körper”, gave a physical (operational) meaning to “time” of a remote event in describing “motion” by introducing the concept of “synchronous stationary clocks located at different places”. But with regard to “place” in describing motion, he assumed without analysis the concept of a system of co-ordinates.In the present paper, we propose a way of giving physical (operational) meaning to the concepts of “place” and “co-ordinate system”, and show how the observer can define both the (...) place and time of a remote event. Following Einstein, we consider another system “in uniform motion of translation relatively to the former”. Without assuming “the properties of homogeneity which we attribute to space and time”, we show that the definitions of space and time in the two systems are linearly related. We deduce some novel consequences of our approach regarding faster-than-light observers and particles, “one-way” and “two-way” velocities of light, symmetry, the “group property” of inertial reference frames, length contraction and time dilatation, and the “twin paradox”. Finally, we point out a flaw in Einstein’s argument in the “Electrodynamical Part” of his paper and show that the Lorentz force formula and Einstein’s formula for transformation of field quantities are mutually consistent. We show that for faster-than-light bodies, a simple modification of Planck’s formula for mass suffices. (Except for the reference to Planck’s formula, we restrict ourselves to Physics of 1905.). (shrink)

In 1931 the mathematical logician Kurt Godel published a revolutionary paper that challenged certain basic assumptions underpinning mathematics and logic. A colleague of Albert Einstein, his theorem proved that mathematics was partly based on propositions not provable within the mathematical system and had radical implications that have echoed throughout many fields. A gripping combination of science and accessibility, Godel’s Proof by Nagel and Newman is for both mathematicians and the idly curious, offering those with a taste for logic and philosophy (...) the chance to satisfy their intellectual curiosity. (shrink)

An able and clear defense of Bradley's principal theses and the underlying conception of metaphysical enterprise. "This is a book about a metaphysician, about metaphysics, and, most importantly, it attempts to develop elements of a metaphysical position long the lines of what is called Absolute Idealism." The Introduction takes up the Verificationists [[sic]] argument and two recent accounts of metaphysics. Part I devotes ten Chapters to the elucidation and defense of Bradley's conception of reality. It culminates in examining three alternative (...) accounts of "Real". Part II considers "the major philosophical theories of the self in order to defend Bradley's Theory of the self within his metaphysical scheme."--A. S. C. (shrink)

As a spiritual autobiography, Kierkegaard's The Point of View for My Work as an Author stands among such great works as Augustine's Confessions and Newman's Apologia pro Vita Sua. Yet Point of View is neither a confession nor a defense; it is an author's story of a lifetime of writing, his understanding of the maze of greatly varied works that make up his oeuvre. Upon the imminent publication of the second edition of Either/Or, Kierkegaard again intended to cease writing. Now (...) was the time for a direct "report to history" on the authorship as a whole. In addition to Point of View, which was published posthumously, the present volume also contains On My Work as an Author, a contemporary substitute, and the companion piece Armed Neutrality. (shrink)

The first major work in the history of philosophy to bear the title "Metaphysics" was the treatise by Aristotle that we have come to know by that name. But Aristotle himself did not use that title or even describe his field of study as 'metaphysics'; the name was evidently coined by the first century C.E. editor who assembled the treatise we know as Aristotle's Metaphysics out of various smaller selections of Aristotle's works. The title 'metaphysics' -- literally, 'after the Physics' (...) -- very likely indicated the place the topics discussed therein were intended to occupy in the philosophical curriculum. They were to be studied after the treatises dealing with nature (ta phusika). In this entry, we discuss the ideas that are developed in Aristotle's treatise. (shrink)

Newton's Philosophiae Naturalis Principia Mathematica provides a coherent and deductive presentation of his discovery of the universal law of gravitation. It is very much more than a demonstration that 'to us it is enough that gravity really does exist and act according to the laws which we have explained and abundantly serves to account for all the motions of the celestial bodies and the sea'. It is important to us as a model of all mathematical physics.Representing a decade's work from (...) a distinguished physicist, this is the first comprehensive analysis of Newton's Principia without recourse to secondary sources. Professor Chandrasekhar analyses some 150 propositions which form a direct chain leading to Newton's formulation of his universal law of gravitation. In each case, Newton's proofs are arranged in a linear sequence of equations and arguments, avoiding the need to unravel the necessarily convoluted style of Newton's connected prose. In almost every case, a modern version of the proofs is given to bring into sharp focus the beauty, clarity, and breath-taking economy of Newton's methods.Subrahmanyan Chandrasekhar is one of the most reknowned scientists of the twentieth century, whose career spanned over 60 years. Born in India, educated at the University of Cambridge in England, he served as Emeritus Morton D. Hull Distinguished Service Professor of Theoretical Astrophysics at the University of Chicago, where he has was based from 1937 until his death in 1996. His early research into the evolution of stars is now a cornerstone of modern astrophysics, and earned him the Nobel Prize for Physics in 1983. Later work into gravitational interactions between stars, the properties of fluids, magnetic fields, equilibrium ellipsoids, and black holes has earned him awards throughout the world, including the Gold Medal from the Royal Astronomical Society in London, the National Medal of Science in the United States, and the Copley Medal from the Royal Society. His many publications include Radiative transfer, Hydrodynamic and hydromagnetic stability, and The mathematical theory of black holes, each being praised for its breadth and clarity. Newton's Principia for the common reader is the result of Professor Chandrasekhar's profound admiration for a scientist whose work he believed is unsurpassed, and unsurpassable. (shrink)

In Carnap’s autobiography, he tells the story how one night in January 1931, “the whole theory of language structure” in all its ramifications “came to [him] like a vision”. The shorthand manuscript he produced immediately thereafter, he says, “was the first version” of Logical Syntax of Language. This document, which has never been examined since Carnap’s death, turns out not to resemble Logical Syntax at all, at least on the surface. Wherein, then, did the momentous insight of 21 January 1931 (...) consist? We seek to answer this question by placing Carnap’s shorthand manuscript in the context of his previous efforts to accommodate scientific theories and metalinguistic claims within Wittgenstein’s Tractatus theory of meaning. The breakthrough of January 1931 consists, from this viewpoint, in the rejection of the Tractatus theory in favor of the meta-mathematical perspective of Hilbert, Gödel, and Tarski. This was not yet the standpoint of the published Logical Syntax, as we show, but led naturally to the “principle of tolerance” and thus to Carnap’s mature philosophy, in which the inconsistencies between this first view and the principle of tolerance, which survived into the published Syntax, were overcome. (shrink)

Our study presents an overview of the issues that were brought forward by participants of a moral case deliberation (MCD) project in two elderly care organizations. The overview was inductively derived from all case descriptions (N = 202) provided by participants of seven mixed MCD groups, consisting of care providers from various professional backgrounds, from nursing assistant to physician. The MCD groups were part of a larger MCD project within two care institutions (residential homes and nursing homes). Care providers are (...) confronted with a wide variety of largely everyday ethical issues. We distinguished three main categories: ‘resident’s behavior’, ‘divergent perspectives on good care’ and ‘organizational context’. The overview can be used for agendasetting when institutions wish to stimulate reflection and deliberation. It is important that an agenda is constructed from the bottom-up and open to a variety of issues. In addition, organizing reflection and deliberation requires effort to identify moral questions in practice whilst at the same time maintaining the connection with the organizational context and existing communication structures. Once care providers are used to dealing with divergent perspectives, inviting different perspectives (e.g. family members) to take part in the deliberation, might help to identify and address ethical ‘blind spots’. (shrink)

Sebastian Gardner competently tackles one of Sartre's more complex and challenging works in this new addition to the Reader's Guides series.

In his book Shadows of the Mind: A search for the missing science of con- sciousness [SM below], Roger Penrose has turned in another bravura perfor- mance, the kind we have come to expect ever since The Emperor’s New Mind [ENM ] appeared. In the service of advancing his deep convictions and daring conjectures about the nature of human thought and consciousness, Penrose has once more drawn a wide swath through such topics as logic, computa- tion, artificial intelligence, quantum physics (...) and the neuro-physiology of the brain, and has produced along the way many gems of exposition of difficult mathematical and scientific ideas, without condescension, yet which should be broadly appealing. 1 While the aims and a number of the topics in SM are the same as in ENM, the focus now is much more on the two axes that Pen- rose grinds in earnest. Namely, in the first part of SM he argues anew and at great length against computational models of the mind and more specifi- cally against any account of mathematical thought in computational terms. Then in the second part, he argues that there must be a scientific account of consciousness but that will require a (still to be found) non-computational extension or modification of present-day quantum physics. (shrink)

Kant’s dissertation for the Master’s degree Succinct Exposition of Some Meditations on Fire was written in Latin in 1755 as a sample (specimen) preceding a Master’s exam, but its first printing did not appear until 1838. What is the relevance of this Master’s dissertation for historical and philosophical studies? To answer this question I analyse the structure and give a brief summary of the dissertation, look at the history of its writing and try to identify the place of this work (...) among Kant’s other papers on natural philosophy. I then demonstrate that Kant’s concept of ether as an elastic matter of fire, heat and light containing the forces of attraction and repulsion originates in the dissertation On Fire. I identify the provisions in Kant’s early works which he later develops in the Master’s dissertation and establish continuity between the text of On Fire and the so-called Physical Monadology, draw parallels between the ideas enunciated by Kant in his first dissertation and the interpretation of ether in the printed works that followed. Finally, I put forward the hypothesis of the heuristic potential of the On Fire treatise for the analysis of Kant’s manuscript legacy. Perhaps this dissertation will enable researchers to clear up some tangled propositions in Kant’s Opus Postumum. However, a series of further studies is needed to verify the hypothesis. (shrink)

Plato’s dialogue Cratylus focuses on being and human dependence on words, or the essential truths about the human condition. Arguing that comedy is an essential part of Plato's concept of language, S. Montgomery Ewegen asserts that understanding the comedic is key to an understanding of Plato's deeper philosophical intentions. Ewegen shows how Plato’s view of language is bound to comedy through words and how, for Plato, philosophy has much in common with playfulness and the ridiculous. By tying words, language, and (...) our often uneasy relationship with them to comedy, Ewegen frames a new reading of this notable Platonic dialogue. (shrink)

In this highly original account of Bishop George Berkeley's epistemological and metaphysical theories, George S. Pappas seeks to determine precisely what doctrines the philosopher held and what arguments he put forward to support them. Specifically, Pappas overturns accepted opinions about Berkeley's famous attack on the Lockean doctrine of abstract ideas. Berkeley's criticism of these ideas had been thought relevant only to his views on language and to his nominalism; Pappas persuasively argues that Berkeley's ideas about abstraction are crucial to nearly (...) all of the fundamental principles that he defends. Pappas demonstrates how an adequate appreciation of Berkeley's views on abstraction can lead to an improved understanding of his important principle of esse is percipi, and of the arguments Berkeley proposes in support of this principle. Pappas also takes up Berkeley's widely rejected claim to be a philosopher of common sense. He assesses the validity of this self-description and considers why Berkeley might have chosen to align himself with a commonsense position. Pappas shows how three core concepts—abstraction, perception, and common sense—are central to and interdependent in the work of one of the major figures of early modern Western thought. (shrink)

Background: In 2014, companies began covering the costs of egg freezing for their employees. The adoption of this benefit was highly contentious. Some argued that it offered women more reproductive...

Nearly as famous as his denial of the existence of matter is Berkeley's insistence that his philosophy is somehow a defense of commonsense. This is most often taken to mean that Berkeley thinks of his philosophy as supporting commonsense beliefs. However, the inadequacies of such views have persuaded some to disregard entirely Berkeley's claims about commonsense. Both readings are undesirable. Extant interpretations misunderstand the relationship between Berkeley's philosophy and commonsense. In this paper, I present a new account of how to (...) understand Berkeley's so-called defense of commonsense; it is not a defense-cum­-apology for commonsense beliefs, but a defensive attack against a skeptical threat. I then examine two rival accounts of the defense of commonsense and show how each fails to satisfy the criteria for a successful account. Finally, I briefly address the implications this view has for future scholarship. (shrink)

As these opening quotes acknowledge, the Prisoner’s Dilemma (PD) represents a core puzzle within the formal mathematics of game theory.3 Its rise in conspicuity is evident figure 2.1 above demonstrating a relatively steady rise in incidences of the phrase’s usage between 1960 to 1995, with a stable presence persisting into the twenty first century. This famous two-person “game,” with a stock narrative cast in terms of two prisoners who each independently must choose whether to remain silent or speak, each advancing (...) self-interest at the expense of the other and thereby achieving a mutually suboptimal outcome, mires any social interaction it is applied to into perplexity. The logic of this game proves the inverse of Adam Smith’s invisible hand: individuals acting on self interest will achieve a mutually suboptimal outcome. However, as this chapter illuminates, the assumptions underlying game theory drive this conclusion. (shrink)

G. E. Moore observed that to assert, 'I went to the pictures last Tuesday but I don't believe that I did' would be 'absurd'. Over half a century later, such sayings continue to perplex philosophers. In the definitive treatment of the famous paradox, Green and Williams explain its history and relevance and present new essays by leading thinkers in the area.

A layman's guide to the mechanics of Gödel's proof together with a lucid discussion of the issues which it raises. Includes an essay discussing the significance of Gödel's work in the light of Wittgenstein's criticisms.

"One basic and underlying assumption of this investigation will be that there is a distinct continuity and development in Berkeley's thought which can be traced through all of his reflective analyses of the problem of perception." The essay argues for Berkeley's theory of perception as a "prototype of the phenomenalists." It argues also for Berkeley's incorporation of elements from the representative theory of perception. Of special interest is the treatment of Berkeley's doctrine of "suggestion" and its connection with the role (...) of imagination in the perception of physical objects. The linguistic aspect of Berkeley's work is minimized. Berkeley's theory of notions receives only a passing reference. The last third of the book is a clear and useful discussion of Berkeley and contemporary phenomenalism. It is suggested, though not shown, that Berkeley has affinity with contemporary phenomenology of perception.--A. S. C. (shrink)

This comprehensive, critical account of Buber's life and work incorporates extensive research and draws on the author's experiences as Buber's coworker and friend.

Traces the development of the famous theologian's philosophy as he faced the challenges of the Weimar Republic, Nazi Germany, and prewar Palestine.

This is a comprehensive and appreciative account of Dewey’s philosophy of value. It succeeds in rectifying certain current misconceptions of Dewey’s aims and contributions to moral philosophy, and in clearly presenting a coherent theory of value. Gouinlock begins his account by laying stress upon Dewey’s Experience and Nature as a key to Dewey’s thought. Chapter 1 is devoted to this task. It is held that "Dewey develops and articulates an inclusive philosophy by characterizing such things as art, science, and value (...) with a common set of concepts denoting the generic traits of experience." There is also a discussion of Dewey’s philosophic method and the uses and abuses of experience. Chapter 2 deals with man and nature and Dewey’s critical response to bifurcation between mind and body, and the relation between individual and society. Chapter 3 begins with Nature and Value. Here one finds a good discussion of ends-in-view and values. A great stress is laid on Dewey’s use of metaphysical concepts in value analysis, in particular the needed stress on the inclusive unity of means and end. (shrink)

This comprehensive and important volume includes contributions by activists, journalists, lawyers and scholars from twenty-one countries. The essays map the directions the movement for women's rights is taking--and will take in the coming decades--and the concomittant transformation of prevailing notions of rights and issues. They address topics such as the rapes in former Yugoslavia and efforts to see that a War Crimes Tribunal responds; domestic violence; trafficking of women into the sex trade; the persecution of lesbians; female genital mutilation; and (...) reproductive rights. (shrink)

There is, in the Ramsey Archive at the Hillman Library of the University of Pittsburgh, a note, written in 1929, in Ramsey's hand and mostly in German, consisting of twenty paragraphs the contents...

Dombrowski's major aim is the positive one of showing that Plato had a philosophy of history, and of exhibiting its content. His minor aim is the negative one of showing that Karl Popper's interpretation of that philosophy is grossly mistaken.

Critical discussion of J.M.E. Moravcsik's paper on Plato's method of division.

This volume gathers together for the first time are all the key texts in a crucial debate in modern philosophy, centered on Leibniz's famous 1695 essay, the "New System of the Nature of Substances and their Communication," in which he introduced his strikingly original theory of metaphysics. His "system" became increasingly famous and drew him into discussion and development of these ideas, both in public and in private, with a variety of thinkers, most notably the great French philosopher Pierre Bayle. (...) Woolhouse's and Francks's new English edition gives the only full representation of this debate, and will therefore be essential reading for anyone who wishes to gain a proper understanding of Leibniz's philosophy and its intelletual context. All the texts are newly translated and extensively annotated; many appear in English for the first time. (shrink)

Journal Name: Semiotica Issue: Ahead of print.