Most arguments against the possibility of time travel use the same old, familiar objection: If I could travel back in time, then I could kill my earlier (i.e. younger) self. Since I do exist such an action would result in a contradiction. Therefore time travel is impossible. This is a statement of the Principal Paradox of Time Travel. Some philosophers have argued that such actions as attempting to kill one’s earlier self would always fail and that there is nothing especially (...) strange about such failures. Despite these arguments, the problem generally is not viewed as being solved in favour of time travel. The above objection to time travel is also used to dismiss a particular class of cosmological models as being unphysical. This paper provides a solution to the Principal Paradox by exploring both the logical and causal implications of time travel. (shrink)

In this paper, criticisms are made of the main tenets of Professor Mellor's argument against ‘backwards’ causation. He requires a closed causal chain of events if there is to be ‘backwards’ causation, but this condition is a metaphysical assumption which he cannot totally substantiate. Other objections to Mellor's argument concern his probabilistic analysis of causation, and the use to which he puts this analysis. In particular, his use of conditional probability inequality to establish the ‘direction’ of causation is shown to (...) be in error. 1I am indebted to Drs H. Krips, L. O'Neill and to the anonymous referee for their suggestions and critical comments on earlier drafts. (shrink)

The Causal Theory of Quantum Mechanics provides a better understanding of the fundamentals of quantum mechanics than is provided by Orthodox (i.e. Copenhagen) Quantum Theory by describing micro-phenomena in terms of entities and processes in space and time, thereby embracing causality at the quantum level. The book focuses especially on finding solutions to conceptual issues about the nature of energy, the conservation of energy, forces, and the Exclusion Principle within the context of the Causal Theory of Quantum Mechanics.

Whys and Ways of Science presents the issues, arguments and the theories that have attracted the greatest attention and which are covered in the greater majority of tertiary courses offered in philosophical and social studies of science. A primary aim of the book is to present a suitably broad picture of the spectrum of theories about science without sacrificing too much detail. About one-half of the book is devoted to the most influential philosophical theories of science and scientific change to (...) emerge post-World War Two in Western countries, in particular the holistic theories of Thomas Kuhn, Imre Lakatos and Larry Laudan. The second half deals with socially-oriented theories of science such as Functionalist sociology of science; the Strong Programme in the Sociology of Scientific Knowledge; the Interests analysis of science, the theories of Paul Feyerabend and of Bruno Latour. The final chapter examines the question of whether the rationality of science can be sustained in the face of growing accounts of science as a purely social activity and presents an original model for theory choice in science. (shrink)

It is exceedingly frequent for people to speak of the ‘passing of time’. We do not, on the other hand, speak of the ‘passing of space’. There do not seem to be any common locutions concerning spatial passage analogous to those of time’s assumed passage. Further, there is a long held belief in the philosophy of time that there is no spatial analogue of the passage of time. This opinion does not take into account circumstances that cannot be noticed in (...) day-to-day existence and which indicate that there is such a spatial analogue. (shrink)

On the basis of both logical and physical arguments, a majority of philosophers and physicists have opted for the Block View of time in which this ‘passage’ is purely subjective. However, the feeling of the ‘passage’ of time has been left principally unaccounted for in the Block View. It is argued that there are two ways by which the (apparent) ‘passage’ of time is perceived by human beings and it is the combination of these perceptions that gives rise to the (...) deep-seated impression on the conscious mind of a ‘dynamic’ nature of time. In postulating the existence of a specific kind of intrinsic structural difference between the two orientations of time within the Block View, a basis for these two perceptions may be provided. (shrink)

It is exceedingly frequent for people to speak of the ‘passing of time’. We do not, on the other hand, speak of the ‘passing of space’. There do not seem to be any common locutions concerning spatial passage analogous to those of time’s assumed passage. Further, there is a long held belief in the philosophy of time that there is no spatial analogue of the passage of time. This opinion does not take into account circumstances that cannot be noticed in (...) day-to-day existence and which indicate that there is such a spatial analogue. (shrink)

The essays in this volume of the Australasian Studies in History and Philosophy of Science series are devoted to the subjects of natural kinds, scientific ...

It is exceedingly frequent for people to speak of the ‘passing of time’. We do not, on the other hand, speak of the ‘passing of space’. There do not seem to be any common locutions concerning spatial passage analogous to those of time’s assumed passage. Further, there is a long held belief in the philosophy of time that there is no spatial analogue of the passage of time. This opinion does not take into account circumstances that cannot be noticed in (...) day-to-day existence and which indicate that there is such a spatial analogue. (shrink)

Letter to the Editors in response to Alasdair Richmond's 'Time Travelers'.

The deBroglie–Bohm quantum potential is the potential energy function of the wave field. The quantum potential facilitates the transference of energy from wave field to particle and back again which accounts for energy conservation in isolated quantum systems. Factors affecting energy exchanges and the form of the quantum potential are discussed together with the related issues of the absence of a source term for the wave field and the lack of a classical back reaction.

The perplexing nature of time has been more contemplated, speculated, written, and debated about over the ages than virtually any other subject, with the possible exception of religion. Yet time seems more elusive than the vast majority of other metaphysical concepts. Time remains mysterious, for we lack an understanding of time at a basic physical level. Concepts of time in theories of modern physics and time as found in contemporary western analytic philosophy are discussed.

It has been claimed that kinetic energy is an objective physical quantity whilst at the same time maintaining that potential energy is not. However, by making use of the method of ‘inference to the best explanation’, it may be readily concluded that potential energy is indeed an objective physical quantity. This is done for an example drawn from the foundations of modern chemistry. In order to do so, the criteria of what counts as ‘most probable’ and ‘most reasonable’ are defined (...) and then employed for choosing the best explanation. (shrink)

Most people would probably agree that the obvious feature about time is that it progresses (or flows). However, our everyday experience of the apparent ‘dynamic’ nature of time conflicts with the basic laws of physics which do not posit any passage of time. This clash between experience and fundamental physics has led a few physicists to develop theories of the universe in which time’s passage is an explicit feature. Two such theories are discussed along with a possible non-‘dynamic’ alternative.

A recently published hypothesis on the nature of time by physicist Richard A. Muller seeks to provide an objective account of the present moment and the ‘flow’ of time. Muller also claims that his hypothesis makes testable predictions. It is shown that the predictions offered cannot be used to test Muller’s hypothesis, that the hypothesis does not rate scientific status, has a number of questionable metaphysical premises, and is merely a re-fashioning of the Growing Block theory of time.

Epistemic defeat is standardly understood in either evidentialist or responsibilist terms. The seminal treatment of defeat is an evidentialist one, due to John Pollock, who famously distinguishes between undercutting and rebutting defeaters. More recently, an orthogonal distinction due to Jennifer Lackey has become widely endorsed, between so-called doxastic (or psychological) and normative defeaters. We think that neither doxastic nor normative defeaters, as Lackey understands them, exist. Both of Lackey’s categories of defeat derive from implausible assumptions about epistemic responsibility. Although Pollock’s (...) evidentialist view is superior, the evidentialism per se can be purged from it, leaving a general structure of defeat that can be incorporated in a reliabilist theory that is neither evidentialist nor responsibilist in any way. (shrink)

Introduction -- What is political judgment? -- Foundations: Plato and Aristotle -- The Kantian Problematic -- The Arendtian Theory of Judgment -- Hermeneutics, tacit knowledge and neo-rationalism.

The case of very young children is a test case for the plausibility of reductionism about testimonial warrant. Reductionism requires reductive reasons, reductively justified and actively deployed for testimonial justification. Though nascent language-users enjoy warranted testimony based beliefs, they do not meet these three reductionist demands. This paper clearly formulates reductionism and the infant/child objection. Two rejoinders are discussed: an influential conceptual argument from Jennifer Lackey’s paper “Testimony and the Infant/Child Objection” and the growing empirical evidence from developmental psychology on (...) selective trust in children. Neither Lackey’s argument nor the empirical evidence vindicate reductionism. (shrink)

Historically, the hypothesis driving emotion research has been that emotion’s data-base—in language, physiology, and behavior— is organized around specific mental states, as reflected in evaluative language. It is suggested that this approach has not greatly advanced a natural science of emotion and that the developing motivational model of emotion defines a better path: emotion is an evolved trait founded on motivational neural circuitry shared by mammalian species, primitively prompting heightened perceptual processing and reflex mobilization for action to appetitive or threatening (...) survival cues. As the field moves forward with increasingly sophisticated measurement technology and assessing more complex affective functioning, scientific understanding of human emotion will proceed best within the framework of this mammalian brain model. (shrink)

Social knowledge, for the most part, is knowledge through testimony. This essay is an overview of the epistemology of testimony. The essay separates knowledge from justification, characterizes testimony as a source of belief, explains why testimony is a source of knowledge, canvasses arguments for anti-reductionism and for reductionism in the reductionism vs. anti-reductionism debate, addresses counterexamples to knowledge transmission, defends a safe basis account of testimonial knowledge, and turns to social norms as a partial explanation for the reliability of testimony.

The norm of assertion, to be in force, is a social norm. What is the content of our social norm of assertion? Various linguistic arguments purport to show that to assert is to represent oneself as knowing. But to represent oneself as knowing does not entail that assertion is governed by a knowledge norm. At best these linguistic arguments provide indirect support for a knowledge norm. Furthermore, there are alternative, non-normative explanations for the linguistic data (as in recent work from (...) Van Elswyk). Direct arguments would rely on normative judgments about the permissibility or impermissibility of assertions with and without the speaker knowing the content asserted. John Turri's work experimental results purport to show that our norm of assertion is factive, and probably knowledge. But as a number of recent experimentalists (Kneer, Reuter and Broessel, Marsili and Wiegmann) have shown, Turri's results rely on the problemmatic use of 'should' as in 'Maria should assert that she owns a 1990 watch.' Correcting for this, these experimentalists provide strong evidence that our norm of assertion is not factive. The standard reply to evidence like this from the assertion of unlucky falsehoods is the excuse maneuver. But Marsili and Wiegmann, following Turri's protocol for testing for excuse validation, show that participants who judge that assertions unlucky falsehoods are permissible are not guilty of excuse validation. Given our current understanding of the experimental evidence, knowledge is not our norm of assertion. (shrink)

This book is an anthology of commentary and criticism written within the transitional period between Alan Watts' 1973 death and the twenty-first century intellectual horizon. Comprised of 16 essays written and published between 1974 and 1994, with up-to-date introductions from the essayists and other contemporary thinkers, this volume opens a window onto unexplored grounds of Alan Watts' impact within late-twentieth-century discourse - an intermediate space where scholars reoriented their bearings through changing times and emerging academic trends. Offering varied explanations and (...) assessments of Alan Watts, including his influence on the Beat and Hippie generations, and his popularization of Zen Buddhism in America, it tackles unaddressed questions within the milieu of late-twentieth century America from the Reagan Revolution and religious conservatism, to paradigm shifts in Buddhist studies and the rise of post-colonial theory. Contributors' post-mortem analyses and critiques of Watts allow for a thematic rendering of their consonance or dissonance with noted Beat, Hippie, and Zen Buddhism themes of his lifetime. This volume will appeal to scholars and students of humanistic psychology, transpersonal psychology, the psychology of religion, comparative religion, and American studies. (shrink)

A history of science text imagining how evolutionary theory and biology would have been understood if Darwin had never published his "Origin of Species" and other works.--publisher summary.

Despite his hostility to religion in his early career, since the turn of the century Habermas has devoted his research to the relationship between faith and knowledge. His two-volume Auch eine Geschichte der Philosophie is the culmination of this project. Spurred by the attacks of 9/11 and the growing conflict between religion and the forces of secularization, I argue that this philosophy of history is the centerpiece of an important turning point in Habermas’s intellectual development. Instead of interpreting religion merely (...) as part of the history of postmetaphysical thinking, Habermas now sees it as a crucial normative resource for both philosophy and social cohesion in the future aswell. Despite its backward-looking approach,my basic thesis is that this book is best understood as a forward-looking appeal for a tolerant, self-reflective democratic politics that brings religious and secular citizens together dialogically through the cooperative use of their rational freedom. (shrink)

Oedipus the tyrant and the limits of political rationalism -- Blind faith and enlightened statesmanship in Oedipus at colonus -- The pious heroism of Antigone -- Conclusion: Nietzsche, Plato, and Aristotle on philosophy and tragedy.

Bishop Elliott's book is a great tool for defending Catholic sexual ethics as humane and reasonable. His experience representing the Holy See at the United Nations has given him a ring-side seat in the battles showing just how radical the sexual revolutionaries really are. He offers a rare combination of sound theology and practical experience." -- Jennifer Roback Morse [taken from back cover].

Through case studies on biodiversity, deforestation, pollution, and war, among others, Stoett analyzes the ability of international policy to provide environmental protection and discusses the ever-present factors of equality, sovereignty, and human rights integral to these issues. While providing a panoramic view of the actors and structures producing these policies. Stoett reminds readers that the topic is personal, that effective governance is not solely the responsibility of governments but of individuals and communities as well. Environmental diplomacy may not always meet (...) its intended goals, but positive steps are being achieved, and change can only happen when angst is replaced with an educated determination to work toward environmental justice. The Second Edition will explore new events, issues, and agreements since 2011; notably the Paris Agreement. The UN's Sustainable Development Goals (SDGs) will be a new theme added throughout and highlighted in each case study. (shrink)

Yugoslavia was the site of unorthodox thinking on multiple fronts during the postwar period. In addition to the geopolitical innovation of the “non-aligned movement” and its domestic attempt at “self-management socialism,” the intellectual environment in the country after Tito’s 1948 break with Stalin also allowed for the development of theoretical work that departed from the Marxism-Leninism of the rest of the communist bloc. One of the most important attempts to blend Marxism with decidedly non-Leninist elements comes from the Slovenian politician (...) and intellectual, France Bučar. In the postwar period, Bučar sought to link his political activity to his intellectual work by developing his own critical systems theory. Unlike the thinkers within the Soviet Union, he was able to explore theoretical resources beyond Karl Marx, focusing in particular the groundbreaking work of Max Weber. This resulted in an agent-centric approach to systems theory that highlights the importance of the individual and geopolitical ethics. This paper aims to situate Bučar’s work in the context of postwar Yugoslavia. In so doing, I bring Bučar into conversation with the most important movement that sought to bring Marx together with Weber from the Western side of the Iron Curtain, i.e. the Frankfurt School of critical theory. I argue that certain aspects of Bučar’s critical systems theory bear a striking resemblance to Habermas’s own attempts to integrate Weberian insights into his own version of critical theory. I conclude by reflecting on how Bučar’s work can be understood as a combination of Eastern praxis with Western critique. (shrink)

This study examines the Verbum speculation of Nicholas of Cusa. The investigation concentrates equally on the concept of language that he inherited from medieval and Quattrocento sources and on the Christian theology of the Word that he wove together using his own resources and distinctive approaches. It includes a consideration of the resonances between Gadamer's hermeneutical theory and Cusanus's unfolding of a productive and rhetorically-oriented concept of the Word. The next section offers a detailed examination of the medieval and humanistic (...) sources for his theology of the Word, paying special attention to Albertism, Ramon Llull, and the role played by Heymeric of Camp. This study highlights a development in Cusanus's thought that takes place after 1450 towards a speculative synthesis of human ars through the semiotic appearance of the power and intentionality of the word. It is also argued that even in the late works Cusanus does not submit to the nominalist tendencies of the via moderna. A penultimate section offers a detailed study of the role of faith in the acceptance of the divine Word. Cusanus fuses the unformed discursive knowledge that is known by analogy with the formal certainty received through intellectual vision. Faith and speculative knowledge unite to lead the believer beyond the images that words convey to the unifying image of the divine Word. The last section reviews recent literature on language and theology in Nicholas of Cusa and indicates a path as to how research on the speculative thought of Cusanus and on intercultural theology could move forward together in the future. (shrink)

Acknowledgments 1. Culture Is Essential 2. Culture Exists 3. Culture Evolves 4. Culture Is an Adaptation 5. Culture Is Maladaptive 6. Culture and Genes Coevolve 7. Nothing about Culture Makes Sense except in the Light of Evolution.

The Management of Scientific Integrity within Academic Medical Centers discusses the impact scientific misconduct has in eight complex case studies. Authors look at multifaceted mixtures of improper behavior, poor communication, cultural issues, adverse medical/health issues, interpersonal problems and misunderstandings to illustrate the challenge of identifying and managing what went wrong and how current policies have led to the establishment of quasi legal processes within academic institutions. The book reviews the current global regulations and concludes with a section authored by a (...) US federal court judge who provides his perspective on the adequacy of current regulations and policies. (shrink)