Stephen Hawking, among others, has proposed that the topological stability of a property of space-time is a necessary condition for it to be physically significant. What counts as stable, however, depends crucially on the choice of topology. Some physicists have thus suggested that one should find a canonical topology, a single ‘right’ topology for every inquiry. While certain such choices might be initially motivated, some little-discussed examples of Robert Geroch and some propositions of my own show that the main candidates—and (...) each possible choice, to some extent—faces the horns of a no-go result. I suggest that instead of trying to decide what the ‘right’ topology is for all problems, one should let the details of particular types of problems guide the choice of an appropriate topology. (shrink)

We present a formal semantics for epistemic logic, capturing the notion of knowability relative to information (KRI). Like Dretske, we move from the platitude that what an agent can know depends on her (empirical) information. We treat operators of the form K_AB (‘B is knowable on the basis of information A’) as variably strict quantifiers over worlds with a topic- or aboutness- preservation constraint. Variable strictness models the non-monotonicity of knowledge acquisition while allowing knowledge to be intrinsically stable. Aboutness-preservation models (...) the topic-sensitivity of information, allowing us to invalidate controversial forms of epistemic closure while validating less controversial ones. Thus, unlike the standard modal framework for epistemic logic, KRI accommodates plausible approaches to the Kripke-Harman dogmatism paradox, which bear on non-monotonicity, or on topic-sensitivity. KRI also strikes a better balance between agent idealization and a non-trivial logic of knowledge ascriptions. (shrink)

In 1981 S. W. Hawking and J. Hartle presented a quantum mechanical description of the early stages of possible cosmological evolution. Their proposal was interpreted by many authors as a pattern of cosmic creation from nothing in which no divine Creator is needed. In this approach, physically defined “nothing” was identified both with the empty set of set theory and with metaphysical nothingness. After defining philosophical presuppositions implicitly assumed in Hawking's paper, one discovers that this alleged nothingness has all properties (...) of the philosophically conceived Logos accepted by Hellenic philosophers of the Neoplatonic tradition. Consequently, Hawking's theory of creation remains consistent with Christian theism, and its only theological opponents can be found among defenders of Samuel Clark's God of scientific gaps. (shrink)

In this paper, I will argue that there is a version of possibilism—inspired by the modal analogue of Kit Fine’s fragmentalism—that can be combined with a weakening of actualism. The reasons for analysing this view, which I call Modal Fragmentalism, are twofold. Firstly, it can enrich our understanding of the actualism/possibilism divide, by showing that, at least in principle, the adoption of possibilia does not correspond to an outright rejection of the actualist intuitions. Secondly, and more specifically, it can enrich (...) our understanding of concretism, by proving that, at least in principle, the idea that objects have properties in an absolute manner is compatible with transworld identity. (shrink)

Dr. Stephen Hawking was the most renowned scientist since Einstein, known both for his groundbreaking work in physics and cosmology and for his mischievous sense of humor. He educated millions of readers about the origins of the universe and the nature of black holes, and inspired millions more by defying a terrifying early prognosis of ALS, which originally gave him only two years to live. In later life he could communicate only by using a few facial muscles, but he continued (...) to advance his field and serve as a revered voice on social and humanitarian issues. Hawking not only unraveled some of the universe's greatest mysteries but also believed science plays a critical role in fixing problems here on Earth. Now he turns his attention to the most urgent issues facing us. Will humanity survive? Should we colonize space? Does God exist? These are just a few of the questions Hawking addresses in this wide-ranging, passionately argued final book from one of the greatest minds in history. Featuring a foreword by Eddie Redmayne, who won an Oscar playing Stephen Hawking, an introduction by Nobel Laureate Kip Thorne, and an afterword from Hawking's daughter, Lucy. (shrink)

The goal of the current paper is to provide an introduction to and survey of the diverse landscape of relevant alternatives theories of knowledge. Emphasis is placed throughout both on the abstractness of the relevant alternatives approach and its amenability to formalization through logical techniques. We present some of the important motivations for adopting the relevant alternatives approach; briefly explore the connections and contrasts between the relevant alternatives approach and related developments in logic, epistemology and philosophy of science; provide a (...) schema for classifying and studying relevant alternatives theories at different levels of abstraction; and present a sample of relevant alternatives theories (contrasting what we call question-first and topic-first theories) that tie our discussion to on-going debates in the philosophical literature, as well as showcasing techniques for formalizing some of the important positions in these debates. (shrink)

Gils-Schmidt and Salloch recognise that human and climate health are inextricably linked, and that mitigating healthcare-associated climate harms is essential for protecting human health.1 They argue that physicians have a duty to consider how their own practices contribute to climate change, including during their interactions with patients. Acknowledging the potential for conflicts between this duty and the provision of individual patient care, they propose the application of Korsgaard’s neo-Kantian account of practical identities to help navigate such scenarios. In this commentary, (...) we argue that by focusing attention on this physician–patient level, the authors overlook the complexity of climate change, both within the healthcare sector and beyond. We recognise the importance of individual agency in tackling this issue, and we also recognise that the authors do briefly acknowledge the importance of considering these broader complexities; however, we emphasise the need for climate and health discussions/action to be situated in a wider framework of systemic change. Our concern is that overemphasis on patient-level interactions risks normalising the prioritisation of individual-level approaches to addressing climate change, detracting from such a broader approach. Physician training emphasises the need for trust, confidentiality and shared decision-making in the doctor–patient relationship. …. (shrink)

Did Beethoven and Mozart have more in common with each other than Clapton and Hendrix? The current research demonstrated the widely reported Mozart Effect as only partly significant. Event-related brain potentials were recorded from 16 professional classical and rock musicians during a standard 2 stimulus visual oddball task, while listening to classical and rock music. During the oddball task participants were required to discriminate between an infrequent target stimulus randomly embedded in a train of repetitive background or standard stimuli. Consistent (...) with previous research, the P3 and N2 ERPs were elicited in response to the infrequent target stimuli. Own genre preference resulted in a reduction in amplitude of the P3 for classical musicians exposed to classical music and rock musicians exposed to rock music. Notably, at the pre-attentive stage of processing beneficial effects of exposure to classical music were observed for both groups of musicians. These data are discussed in terms of short and long-term music benefits on both conscious and unconscious cognitive processes. (shrink)

Edouard Machery's paper, ‘The Folk Concept of Intentional Action: Philosophical and Psychological Issues, ’ puts forth an intriguing new hypothesis concerning recent work in experimental philosophy on the concept of intentional action. As opposed to other hypotheses in the literature, Machery's 'trade-off hypothesis' claims not to rely on moral considerations in explaining folk uses of the concept. In this paper, we critique Machery's hypothesis and offer empirical evidence to reject it. Finally, we evaluate the current state of the debate concerning (...) the concept of intentional action, and motivate skepticism toward the plausibility of any parsimonious account of the relevant data. (shrink)

A Brief History of Time: From the Big Bang to Black Holes is a popular-science book on cosmology (the study of the origin and evolution of the universe) by British physicist Stephen Hawking. It was first published in 1988. Hawking wrote the book for readers who have no prior knowledge of the universe and people who are interested in learning.

What does ‘Smith knows that it might be raining’ mean? Expressivism here faces a challenge, as its basic forms entail a pernicious type of transparency, according to which ‘Smith knows that it might be raining’ is equivalent to ‘it is consistent with everything that Smith knows that it is raining’ or ‘Smith doesn’t know that it isn’t raining’. Pernicious transparency has direct counterexamples and undermines vanilla principles of epistemic logic, such as that knowledge entails true belief and that something can (...) be true without one knowing it might be. I re-frame the challenge in precise terms and propose a novel expressivist formal semantics that meets it by exploiting (i) the topic-sensitivity and fragmentation of knowledge and belief states and (ii) the apparent context-sensitivity of epistemic modality. The resulting form of assertibility semantics advances the state of the art for state-based bilateral semantics by combining attitude reports with context-sensitive modal claims, while evading various objectionable features. In appendices, I compare the proposed system to Beddor and Goldstein’s ‘safety semantics’ and discuss its analysis of a modal Gettier case due to Moss. (shrink)

This article challenges the association between realist methodology and ideals of legitimacy. Many who seek a more “realistic” or “political” approach to political theory replace the familiar orientation towards a state of justice with a structurally similar orientation towards a state of legitimacy. As a result, they fail to provide more reliable practical guidance, and wrongly displace radical demands. Rather than orienting action towards any state of affairs, I suggest that a more practically useful approach to political theory would directly (...) address judgments, by comparing the concrete possibilities for action faced by real political actors. (shrink)

When one thinks—knows, believes, imagines—that something is the case, one’s thought has a topic: it is about something, towards which one’s mind is directed. What is the logic of thought, so understood? This book begins to explore the idea that, to answer the question, we should take topics seriously. It proposes a hyperintensional account of the propositional contents of thought, arguing that these are individuated not only by the set of possible worlds at which they are true, but also by (...) their topic: what they are about. The book then builds epistemic, doxastic, probabilistic, and conditional logics based on this view. It applies them to issues ranging from dogmatism, scepticism, and epistemic fallibilism, to imagination and suppositional reasoning, belief revision, framing effects, and the acceptability of indicative conditionals. (shrink)

This innovative study posits that myths in general, and Greek theogonic myth in particular, have a latent meaning that is responsible both for the emotional energy inherent in myths, and for the special attraction they have even to those who no longer believe in their literal meaning. Caldwell describes, in clear and comprehensible language, aspects of psychoanalytic theory relevant to the understanding of Greek myth, implementing a psychoanalytic methodology to interpret the Greek myth of origin and succession, particularly as (...) stated in Hesiod's Theogony. In reassessing this work, which tells the story of the world's beginning from unbounded Chaos to the defeat of the Titans, Caldwell addresses several unexplained problems-- why does the world begin with the spontaneous emergence of four uncaused entities, and why in this particular order? Why does Ouranos prevent his children from being born by confining them in their mother's body? Why is Ouranos castrated by his son, and why is Aphrodite born from the severed genitals? Why is it always the youngest son who overthrows his father, the sky-god, and what is the logic of the steps taken by Zeus to prevent the same thing happening to him? Presenting a new definition and analyses of the psychological functions in myth, this new study should appeal to a wide range of classicists, teachers and students of mythology, and those interested in the application of psychoanalytic methods to literature. (shrink)

The controversy over the equivalence of continuous sedation until death (CSD) and physician-assisted suicide/euthanasia (PAS/E) provides an opportunity to focus on a significant extended use of CSD. This extension, suggested by the equivalence of PAS/E and CSD, is designed to promote additional patient autonomy at the end-of-life. Samuel LiPuma, in his article, “Continuous Sedation Until Death as Physician-Assisted Suicide/Euthanasia: A Conceptual Analysis” claims equivalence between CSD and death; his paper is seminal in the equivalency debate. Critics contend that sedation (...) follows proportionality protocols for which LiPuma’s thesis does not adequately account. Furthermore, sedation may not eliminate consciousness, and as such LiPuma’s contention that CSD is equivalent to neocortical death is suspect. We not only defend the equivalence thesis, but also expand it to include additional moral considerations. First, we explain the equivalence thesis. This is followed by a defense of the thesis against five criticisms. The third section critiques the current use of CSD. Finally, we offer two proposals that, if adopted, would broaden the use of PAS/E and CSD and thereby expand options at the end-of-life. (shrink)

According to Aristotle, the medical art aims at health, which is a virtue of the body, and does so in an unlimited way. Consequently, medicine does not determine the extent to which health should be pursued, and “mental health” falls under medicine only via pros hen predication. Because medicine is inherently oriented to its end, it produces health in accordance with its nature and disease contrary to its nature—even when disease is good for the patient. Aristotle’s politician understands that this (...) inherent orientation can be systematically distorted, and so would see the need for something like the Hippocratic Oath. (shrink)

This comprehensive, historically organized introduction to philosophy communicates the richness of the discipline and provides the student with a working knowledge of the development of Western philosophy. New co-author James Fieser has brought this classic text up-to-date both chronologically and stylistically while preserving the thoughtful, conceptual characteristics that have made it so successful. The text covers all periods of philosophy, lists philosophers alphabetically and chronologically on the end-papers, and features an exceptional glossary of key concepts.

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Ideas 62.1 (2001) 141-160 [Access article in PDF] The Politics of Character in John Milton's Divorce Tracts David Hawkes nunquam privatum esse sapientum --Cicero I. There has recently been a great deal of debate over the relative influence on Milton's politics of two discordant revolutionary ideologies: classical republicanism and radical Protestant theology. 1 In the mid-seventeenth century the search for intellectual precedents and rationalizations (...) of the English revolution brought these two traditions into an uneasy alliance, and Milton, like many other revolutionary apologists, drew on both of them. Of course the two schools of thought are not necessarily incompatible. J. G. A. Pocock notes one point of connection between them: The context in which men attain their final end--or recover their prima forma, though this concept might not have been antinomian enough for the radical saints of the New Model--is that of apocalypse; the "end" of Aristotelian teleology is still united with the eschatological "end" of prophetic time. 2The Aristotelian "end" of man is the good, defined as "an activity of soul in accordance with virtue," and the belief that one can or has fulfilled that end is [End Page 141] certainly amenable to Protestant antinomianism. 3 Furthermore, as Sharon Achinstein points out, Milton's "conception of virtue... melds the religious notion of conscience with a classical sense of civic duty." 4 On the other hand there are significant differences between the classical and the Christian notions of "virtue" and the "good," which dictate that, as Nigel Smith puts it, "[c]lassical republicanism, properly conceived, would in many ways be in conflict with the millenarian, chiliastic and perfectionist Protestantism of the sects." 5 The problem faced by Milton as a Protestant Republican is that the definition of the "good" offered by millennial sanctification and that attainable through Aristotelian virtue are in many ways mutually exclusive and contradictory. They have been characterized as such ever since Augustine's City of God asserted that pagan ethics are incompatible with true, Christian virtue. 6 Millennialism relies on faith; civic humanist virtue relies on works. Antinomianism abolishes the law; republicanism institutes the rule of law. The saints are sanctified by grace; the virtuous are distinguished by their own strength of character. Radical Protestant freedom is negative and private--it is the ability to speak and worship according to the dictates of conscience; civic humanist liberty is positive and public, the ability to participate fully in the government of the res publica. While daunting, however, these contradictions are not quite insuperable. I believe that Milton finds a common denominator in the accounts given by these two traditions of psychological objectification and that the agreement of Roman and Christian morality on this point leads him to make the tendency to objectification (or rather the ability to resist that tendency) the central issue of his mature political theory.The political ideas of the classical republicans and their descendants, the Renaissance civic humanists, were based upon Aristotle's Politics and Nico-machean Ethics, while the intellectual sources of radical Protestantism can be traced to Luther's commentaries on Paul's epistles. During the English revolution the Pauline exegesis of the relationship between the old and the new covenants provided intellectual ammunition against custom and tradition, as well as inspiring the antinomianism of the radical fringe to which Milton was falsely accused of adhering during the divorce controversy. In the divorce tracts Milton points out that Aristotle and Paul share one fundamental tenet: they argue that interior and exterior slavery are of the same nature and therefore concomitant [End Page 142] and inseparable. Furthermore, Milton notes, Aristotle and Paul both claim that exterior and interior slavery consist in "carnality," the subjection of the spirit to the flesh. This identification of carnality with servility becomes a constant strain which runs throughout Milton's career and provides the consistent element in his apparently vacillating theories of politics and religion.II. Although this argument recurs throughout Milton's career, it is first hammered into shape during the divorce controversy... (shrink)

Most democratic theorists agree that concentrations of wealth and power tend to distort the functioning of democracy and ought to be countered wherever possible. Deliberative democrats are no exception: though not its only potential value, the capacity of deliberation to ‘neutralise power’ is often regarded as ‘fundamental’ to deliberative theory. Power may be neutralised, according to many deliberative democrats, if citizens can be induced to commit more fully to the deliberative resolution of common problems. If they do, they will be (...) unable to get away with inconsistencies and bad or private reasons, thereby mitigating the illegitimate influence of power. I argue, however, that the means by which power inflects political disagreement is far more subtle than this model suggests and cannot be countered so simply. As a wealth of recent research in political psychology demonstrates, human beings persistently exhibit ‘motivated reasoning’, meaning that even when we are sincerely committed to the deliberative resolution of common problems, and even when we are exposed to the same reasons and evidence, we still disagree strongly about what ‘fair cooperation’ entails. Motivated reasoning can be counteracted, but only under exceptional circumstances such as those that enable modern science, which cannot be reliably replicated in our society at large. My analysis suggests that in democratic politics – which rules out the kind of anti-democratic practices available to scientists – we should not expect deliberation to reliably neutralise power. (shrink)

My topic is moderate modal skepticism in the spirit of Peter van Inwagen. Here understood, this is a conservative version of modal empiricism that severely limits the extent to which an ordinary agent can reasonably believe “exotic” possibility claims. I offer a novel argument in support of this brand of skepticism: modal skepticism grounds an attractive (and novel) reply to Humean skepticism. Thus, I propose that modal skepticism be accepted on the basis of its theoretical utility as a tool for (...) dissolving philosophical paradox. (shrink)

Despite claims to the contrary, the science of ecology has a long history of building theories. Many ecological theories are mathematical, computational, or statistical, though, and rarely have attempts been made to organize or extrapolate these models into broader theories. The Theory of Ecology brings together some of the most respected and creative theoretical ecologists of this era to advance a comprehensive, conceptual articulation of ecological theories. The contributors cover a wide range of topics, from ecological niche theory to population (...) dynamic theory to island biogeography theory. Collectively, the chapters ably demonstrate how theory in ecology accounts for observations about the natural world and how models provide predictive understandings. It organizes these models into constitutive domains that highlight the strengths and weaknesses of ecological understanding. This book is a milestone in ecological theory and is certain to motivate future empirical and theoretical work in one of the most exciting and active domains of the life sciences. (shrink)

Variabilism is the view that proper names (like pronouns) are semantically represented as variables. Referential names, like referential pronouns, are assigned their referents by a contextual variable assignment (Kaplan 1989). The reference parameter (like the world of evaluation) may also be shifted by operators in the representation language. Indeed verbs that create hyperintensional contexts, like ‘think’, are treated as operators that simultaneously shift the world and assignment parameters. By contrast, metaphysical modal operators shift the world of assessment only. Names, being (...) variables, refer rigidly in the latter merely intensional contexts, but may vary their reference in hyperintensional contexts. This conforms to the intuition that the content of attitude ascriptions encapsulates referential uncertainty. Furthermore, names in hyperintensional contexts are ambiguous between de re* and de dicto* interpretations. This fact is used to account for asymmetric mistaken identity attributions (for example, Biron thinks Katherine is Rosaline, but he doesn’t think Rosaline is Katherine). -/- The variable theory compares favourably with its alternatives, including Millianism and descriptivism. Millians cannot account for the behaviour of names in hyperintensional contexts, while descriptivists cannot generate a necessary contrast between intensional and hyperintensional contexts. No other theory can capture the facts pertaining to the existentially bound use of names. (shrink)

Taking the title of his book from Isaiah Berlin's famous essay distinguishing a negative concept of liberty connoting lack of interference by others from a positive concept involving participation in the political realm, Samuel Fleischacker explores a third definition of liberty that lies between the first two. In Fleischacker's view, Kant and Adam Smith think of liberty as a matter of acting on our capacity for judgment, thereby differing both from those who tie it to the satisfaction of our (...) desires and those who translate it as action in accordance with reason or "will." Integrating the thought of Kant and Smith, and developing his own stand through readings of the Critique of Judgment and The Wealth of Nations, Fleischacker shows how different acting on one's best judgment is from acting on one's desires--how, in particular, good judgment, as opposed to mere desire, can flourish only in favorable social and political conditions. At the same time, exercising judgment is something every individual must do for him- or herself, hence not something that philosophers and politicians who reason better than the rest of us can do in our stead. For this reason advocates of a liberty based on judgment are likely to be more concerned than are libertarians to make sure that government provides people with conditions for the use of their liberty--for example, excellent standards of education, health care, and unemployment insurance--while at the same time promoting a less paternalistic view of government than most of the movements associated for the past thirty years with the political left. (shrink)

Samuel Clarke was by far the most gifted and influential Newtonian philosopher of his generation, and A Demonstration of the Being and Attributes of God, which constituted the 1704 Boyle Lectures, was one of the most important works of the first half of the eighteenth century, generating a great deal of controversy about the relation between space and God, the nature of divine necessary existence, the adequacy of the Cosmological Argument, agent causation, and the immateriality of the soul. Together (...) with the other texts presented in this edition, it also provides the best introduction to Clarke's philosophical views, which, in addition to their intrinsic interest, are historically important for the light they shed both on the philosophical positions within the Newtonian circle and on the exchange between Clarke and Leibniz, the most famous philosophical controversy of the eighteenth century. (shrink)

Cognitive science has recently made some startling discoveries about temporal experience, and these discoveries have been drafted into philosophical service. We survey recent appeals to cognitive science in the philosophical debate over whether time objectively passes. Since this research is currently in its infancy, we identify some directions for future research.

Researchers in all management specialties have discussed and investigated the important role values play in personal and organizational phenomena. However, because research on values has been performed in a wide range of social science disciplines and at different levels of analysis, much of thiswork has been uninformed by other work and is neither well integrated nor systematized, resulting in a great deal of confusion concerning the topic. This article attempts to add order and clarity to this area of research by (...) proposing a framework of values research based on level of analysis and by cataloguing and reviewing the vast theoretical and empirical research in light of this framework. It concludes with a critique of the extant literature and recommendations for further research. (shrink)

This paper examines the interplay of semantics and pragmatics within the domain of film. Films are made up of individual shots strung together in sequences over time. Though each shot is disconnected from the next, combinations of shots still convey coherent stories that take place in continuous space and time. How is this possible? The semantic view of film holds that film coherence is achieved in part through a kind of film language, a set of conventions which govern the relationships (...) between shots. In this paper, we develop and defend a new version of the semantic view. We articulate it for a pair of conventions that govern spatial relations between viewpoints. One such rule is already well-known; sometimes called the "180° Rule," we term it the X-Constraint; to this we add a previously unrecorded rule, the T-Constraint. As we show, both have the effect, in different ways, of limiting the way that viewpoint can shift through space from shot to shot over the course of a film sequence. Such constraints, we contend, are analogous to relations of discourse coherence that are widely recognized in the linguistic domain. If film is to have a language, it is a language made up of rules like these. (shrink)

Much current debate in the metaphysics of time is between A-theorists and B-theorists. Central to this debate is the assumption that time exists and that the task of metaphysics is to catalogue time’s features. Relatively little consideration has been given to an error theory about time. Since there is very little extant work on temporal error theory the goal of this paper is simply to lay the groundwork to allow future discussion of the relative merits of such a view. The (...) paper thus develops a conceptual framework from within which to evaluate claims about the actual existence, or not, of temporality as that notion appears in folk discourses about time, and from there to examine claims about the counterfactual existence, or not, of temporality so conceived. We subsequently apply this framework to three extant positions drawn from physics and metaphysics that deny the existence of time. We show that only one of these positions is a folk temporal error theory; that is, a view that denies the existence of time as that notion is operative in our everyday thought and talk. (shrink)

We propose a solution to the problem of logical omniscience in what we take to be its fundamental version: as concerning arbitrary agents and the knowledge attitude per se. Our logic of knowledge is a spin-off from a general theory of thick content, whereby the content of a sentence has two components: an intension, taking care of truth conditions; and a topic, taking care of subject matter. We present a list of plausible logical validities and invalidities for the logic of (...) knowledge per se for arbitrary agents, and isolate three explanatory factors for them: the topic-sensitivity of content; the fragmentation of knowledge states; the defeasibility of knowledge acquisition. We then present a novel dynamic epistemic logic that yields precisely the desired validities and invalidities, for which we provide expressivity and completeness results. We contrast this with related systems and address possible objections. (shrink)

Einstein said that the most incomprehensible thing about the universe is that it is comprehensible. But was he right? Can the quantum theory of fields and Einstein's general theory of relativity, the two most accurate and successful theories in all of physics, be united in a single quantum theory of gravity? Two of the world's most famous physicists - Stephen Hawking and Roger Penrose - disagree. Here they explain their positions in a work based on six lectures with a final (...) debate, all originally presented at the Isaac Newton Institute for Mathematical Sciences at the University of Cambridge. (shrink)