According to the truthmaker theory that we favour, all contingent truths are made true by existing facts or states of affairs. But if that is so, then it appears that we must accept the existence of the negative facts that are required to make negative truths (such as 'There is no hippopotamus in the room.') true. We deny the existence of negative facts, show how negative truths are made true by positive facts, point out where the (reluctant) advocates of negative (...) facts (Russell, Armstrong, et al.) went wrong, and demonstrate the superiority of our solution to the alternatives. (shrink)

The Quine/Putnam indispensability argument is regarded by many as the chief argument for the existence of platonic objects. We argue that this argument cannot establish what its proponents intend. The form of our argument is simple. Suppose indispensability to science is the only good reason for believing in the existence of platonic objects. Either the dispensability of mathematical objects to science can be demonstrated and, hence, there is no good reason for believing in the existence of platonic objects, or their (...) dispensability cannot be demonstrated and, hence, there is no good reason for believing in the existence of mathematical objects which are genuinely platonic. Therefore, indispensability, whether true or false, does not support platonism. (shrink)

Alan Musgrave has consistently defended two positions that he regards as commonsensical: critical realism and critical rationalism. In this volume a group of internationally-renowned authors discuss themes that are relevant in one way or another to Musgrave’s work. Rather than a standard celebratory festschrift, this book offers a new examination of topics of current interest in philosophy. The contributory essays are followed by responses from Alan Musgrave himself.

By an argument form I shall mean a schema consisting of a string of symbols that are place-­‐holders for either logical terms or non-­‐logical (descriptive/content) terms: substituting terms of the appropriate kind for the symbols yields an argument. A substitution instance of an argument form is an argument that arises as a result of such a substitution. By a valid argument I shall mean an argument such that it is impossible for the premises to be true and the conclusion false. (...) Thus, an invalid argument is an argument such that it is possible for the premises to be true and the conclusion false. (shrink)

The Quine/Putnam indispensability argument is regarded by many as the chief argument for the existence of platonic objects. We argue that this argument cannot establish what its proponents intend. The form of our argument is simple. Suppose indispensability to science is the only good reason for believing in the existence of platonic objects. Either the dispensability of mathematical objects to science can be demonstrated and, hence, there is no good reason for believing in the existence of platonic objects, or their (...) dispensability cannot be demonstrated and, hence, there is no good reason for believing in the existence of mathematical objects which are genuinely platonic. Therefore, indispensability, whether true or false, does not support platonism. Mathematical platonists claim that at least some of the objects which are the subject matter of pure mathematics (e.g. numbers, sets, groups) actually exist. Furthermore, they claim that these objects differ radically from the concrete objects (trees, cats, stars, molecules) which inhabit the material world. We take the standard platonistic position to include the claim that platonic objects lack spatio-temporal location and causal powers. Many (perhaps most) mathematical platonists subscribe to this view.1 But some who call themselves (or might be called) mathematical platonists.. (shrink)

It is widely believed that medically inert treatments (“placebos”) can bring about therapeutic benefits. There is also evidence that medically active treatments may also have “placebo” effects. Since anything that has the potential to benefit patients ought to be exploited, subject to appropriate ethical standards, it has been suggested that more should be done to investigate and exploit the power of the placebo for therapeutic benefit. I explore the acute epistemic and ethical constraints that such exploitation is likely to face, (...) and conclude that effective exploitation is unlikely. (shrink)

Mathematics is about numbers, sets, functions, etc. and, according to one prominent view, these are abstract entities lacking causal powers and spatio-temporal location. If this is so, then it is a puzzle how we come to have knowledge of such remote entities. One suggestion is intuition. But `intuition' covers a range of notions. This paper identifies and examines those varieties of intuition which are most likely to play a role in the acquisition of our mathematical knowledge, and argues that none (...) of them, singly or in combination, can plausibly account for knowledge of abstract entities. (shrink)

According to standard mathematical platonism, mathematical entities (numbers, sets, etc.) are abstract entities. As such, they lack causal powers and spatio-temporal location. Platonists owe us an account of how we acquire knowledge of this inaccessible mathematical realm. Some recent versions of mathematical platonism postulate a plenitude of mathematical entities, and Mark Balaguer has argued that, given the existence of such a plenitude, the attainment of mathematical knowledge is rendered non-problematic. I assess his epistemology for such a profligate platonism and find (...) it unsatisfactory because it lacks an adequate semantics, in particular, an adequate account of reference. (shrink)

Mathematics is about numbers, sets, functions, etc. and, according to one prominent view, these are abstract entities lacking causal powers and spatio-temporal location. If this is so, then it is a puzzle how we come to have knowledge of such remote entities. One suggestion is intuition. But ‘intuition’ covers a range of notions. This paper identifies and examines those varieties of intuition which are most likely to playa role in the acquisition of our mathematical knowledge, and argues that none of (...) them, singly or in combination, can plausibly account for knowledge of abstract entities. (shrink)

According to mathematical platonism, mathematical entities (e.g. numbers) exist as abstract objects. If numbers are abstract objects, then I doubt our ability to know of their existence.objects lack causal powers and spatio-temporal location. On the other hand, we human knowers exist within the causal nexus and are wholly spatio-temporal. So our epistemic isolation from abstract objects is total and unbridgeable (Benacerraf 1973, Cheyne 2001). Any version of mathematical platonism that is worth taking seriously must claim that we can and (...) do know of the existence of abstract objects. Since I deny that knowledge of the existence of abstract objects is possible, I reject mathematical platonism. (shrink)

The following principles may plausibly be included in a wide range of theories of epistemic justification: (1) There are circumstances in which an agent is justified in believing a falsehood, (2) There are circumstances in which an agent is justified in believing a principle of epistemic justification, (3) Beliefs acquired in compliance with a justifiably-believed epistemic principle are justified. I argue that it follows from these three individually plausible claims that an agent's belief may be both justified and unjustified. I (...) consider how theories may avoid this paradox, and conclude that deontological theories of epistemic justification face considerable, perhaps insurmountable, difficulties. (shrink)

Why are the conditions for propositional knowledge so difficult to discover or devise in this post-Gettier age? Why do not most epistemologists agree on roughly the same analysis as they appear to have done in the pre-Gettier paradise? I argue that the problem lies in that fact that the epistemologists intuitive concept of knowledge appeals to desiderata that probably cannot be satisfied. Unfortunately, if we abandon some of these desiderata, it is difficult to settle on a concept of knowledge which (...) is not too remote from our initial intuitions. I suggest that epistemology may be better off without the concept of knowledge. There are plenty of other interesting notions for us to be going on with. (shrink)

Schwartz (1991) argues that the worry that successful reduction would eliminate rather than conserve the mental is a needless worry. He examines cases of reduction from the natural sciences and claims that if reduction of the mental is like any of those cases then it would not be a case of elimination. I discuss other cases of scientific reduction which do involve elimination. Schwartz has not shown that reduction of the mental could not be like such cases, so his argument (...) is not sufficient to dispel the worry of elimination. (shrink)

According to platonists, entities such as numbers, sets, propositions and properties are abstract objects. But abstract objects lack causal powers and a location in space and time, so how could we ever come to know of the existence of such impotent and remote objects? In Knowledge, Cause, and Abstract Objects, Colin Cheyne presents the first systematic and detailed account of this epistemological objection to the platonist doctrine that abstract objects exist and can be known. Since mathematics has such (...) a central role in the acquisition of scientific knowledge, he concentrates on mathematical platonism. He also concentrates on our knowledge of what exists, and argues for a causal constraint on such existential knowledge. Finally, he exposes the weaknesses of recent attempts by platonists to account for our supposed platonic knowledge. This book will be of particular interest to researchers and advanced students of epistemology and of the philosophy of mathematics and science. It will also be of interest to all philosophers with a general interest in metaphysics and ontology. (shrink)

Rationis Defensor is a volume of previously unpublished essays celebrating the life and work of Colin Cheyne. It celebrates his dedication to rational enquiry and his philosophical style. It also celebrates the distinctive brand of naturalistic philosophy for which Otago has become known. Contributors to the volume include a wide variety of philosophers, all with a personal connection to Colin, and all of whom are, in their own way, defenders of rationality.

Edited book containing the following essays: 1 Getting over Gettier, Alan Musgrave.- 2 Justified Believing: Avoiding the Paradox Gregory W. Dawes.- 3 Literature and Truthfulness,Gregory Currie.- 4 Where the Buck-passing Stops, Andrew Moore.- 5 Universal Darwinism: Its Scope and Limits, James Maclaurin, - 6 The Future of Utilitarianism,Tim Mulgan. 7 Kant on Experiment, Alberto Vanzo.- 8 Did Newton ʻFeignʼ the Corpuscular Hypothesis? Kirsten Walsh.- 9 The Progress of Scotland: The Edinburgh Philosophical Societies and the Experimental Method, Juan Gomez.- 10 Propositions: (...) Truth vs. Existence, Heather Dyke.- 11 Against Advanced Modalizing, Josh Parsons.- 12 Spread Worlds, Plenitude and Modal Realism: A Problem for DavidLewis, Charles R. Pigden and Rebecca E. B. Entwisle.- 13 Defending Quine on Ontological Commitment. 14. The Scandal of Platonism, Vladimír Svoboda.- 15 A Neglected Reply to Prior's Dilemma J. C. Beall. 16 Mathematical and Empirical Concepts, Pavel Materna.- 17 Post-Fregean Thoughts on Propositional Unity, Bjørn Jespersen.- 18 Best-path Theorem Proving: Compiling Derivations, Martin Frické.- 19 Is Imperative Inference Impossible?, Hannah Clark-Younger. ​. (shrink)

Colin Cheyne's ‘paradox of reasonable believing’ poses a problem for both internalist and externalist theories of rationality. Cheyne suggests that externalists will more easily solve it. I argue the opposite.

Schopenhauer repeatedly claims that suicide is both foolish and futile. But while many commentators have expressed sympathy for his charge of foolishness, most regard his charge of futility as indefensible even within his own system. In this paper, I offer a defense of Schopenhauer’s futility charge, based on metaphysical and psychological considerations. On the metaphysical front, Schopenhauer’s view implies that psychological connections extend beyond death. Drawing on Parfit’s discussion of personal identity, I argue that those connections have personal significance, such (...) that suicide does not allow one, as Hamlet hopes, simply “not to be.” On the psychological front, I argue that a distinction between agents’ intentions and underlying desires makes room for Schopenhauer to claim that paradigmatic suicidal agents ultimately desire the opposite of what suicide accomplishes. I conclude by showing how the resulting account of futility can buttress the charge of foolishness as well. My interpretation still leaves Schopenhauer vulnerable to certain objections, but shows that his account is significantly more defensible than previous commentators have realized. (shrink)

Kant makes a striking reference to Spinoza in the 1788 Critique of Practical Reason. This chapter begins by investigating whether Kant directly concerned himself with Spinoza, focusing on Omri Boehm's recent affirmative argument. Kant thinks the objective principle yields radical metaphysical conclusions only in conjunction with further claims about specific conditioning relations. Kant's privileging of Spinozism among realist views seems generally detached from Spinoza's actual thought. The chapter deals with points of convergence or near‐convergence between Kant and Spinoza. It identifies (...) two philosophically interesting points on which Spinoza's and Kant's views come surprisingly close: their arguments for the limitations of our sensory knowledge and their arguments for the timelessness of the mind. Spinoza's official argument for the timelessness of the mind appeals to his doctrines of the body's eternal essence, the parallel between bodies and ideas, and the identity of the human mind with God's idea of the human body. (shrink)

Colin McGinn presents his latest work on consciousness in ten interlinked papers, four of them previously unpublished. He extends and deepens his controversial solution to the mind-body problem, defending the view that consciousness is both ontologically unproblematic and epistemologically impenetrable. He also investigates the basis of our knowledge that there is a mind-body problem, and the bearing of this on attempted solutions. McGinn goes on to discuss the status of first-person authority, the possibility of atomism with respect to consciousness, (...) extreme dualism, and the role of non-existent objects in constituting intentionality. He argues that traditional claims about our knowledge of our own mind and of the external world can be inverted; that atomism about the conscious mind might turn out to be true; that dualism is more credible the more extreme it is; and that all intentionality involves non-existent objects. These are all surprising positions, but he contends that what the philosophy of mind needs now is 'methodological radicalism' - a willingness to consider new and seemingly extravagant ideas. (shrink)

Presents a self-contained introduction to logic suitable for majors and nonmajors, and can be covered entirely in a one-semester course. Natural deduction systems of sentential logic and of first-order logic, truth tables, and the basic ideas of model theory are presented without superfluous discussion.

The demise of behaviorism has made ethologists more willing to ascribe mental states to animals. However, a methodology that can avoid the charge of excessive anthropomorphism is needed. We describe a series of experiments that could help determine whether the behavior of nonhuman animals towards dead conspecifics is concept mediated. These experiments form the basis of a general point. The behavior of some animals is clearly guided by complex mental processes. The techniques developed by comparative psychologists and behavioral ecologists are (...) able to provide us with the tools to critically evaluate hypotheses concerning the continuity between human minds and animal minds. (shrink)

We report a novel task designed to elicit transient attention-lapse induced alienation of agency experiences in normal participants. When attention-related action slips occur during the task, participants reported substantially decreased self control as well as a high degree of perceived agency attributed to the errant hand. In addition, participants reported being surprised by, and annoyed with, the actions of the errant hand. We argue that ALIA experiences occur because of constraints imposed by the close and precise temporal relations between intention (...) formation and a contrary action employed in this paradigm. We note similarities between ALIA experiences and anarchic hand sign and argue that, despite important differences, both ALIA experiences and AHS phenomenology reflect failures of executive control to intervene and cancel contrary affordance-driven habitual motor plans. (shrink)

Several authors have recently argued that the content of pains (and bodily sensations more generally) is imperative rather than descriptive. I show that such an account can help resolve competing intuitions about phantom limb pain. As imperatives, phantom pains are neither true nor false. However, phantom limb pains presuppose falsehoods, in the same way that any imperative which demands something impossible presupposes a falsehood. Phantom pains, like many chronic pains, are thus commands that cannot be satisfied. I conclude by showing (...) that some of the negative psychological consequences of chronic pain are a direct consequence of their imperative nature. (shrink)

Maher (1988, 1990) has recently argued that the way a hypothesis is generated can affect its confirmation by the available evidence, and that Bayesian confirmation theory can explain this. In particular, he argues that evidence known at the time a theory was proposed does not confirm the theory as much as it would had that evidence been discovered after the theory was proposed. We examine Maher's arguments for this "predictivist" position and conclude that they do not, in fact, support his (...) view. We also cast doubt on the assumptions of Maher's alleged Bayesian proofs. (shrink)

Previously we reported a three-factor structure for hallucinations accompanying sleep paralysis . These earlier analyses were, however, based on retrospective accounts. In a prospective study, 383 individuals reported individual episodes online providing further evidence for the three-factor structure as well as clearer conceptually meaningful relations among factors than retrospective studies. In addition, reports of individual episodes permitted a more fine-grained analysis of the internal structure of factors to assess predictions based on the hypothesis that a sensed or felt presence is (...) a core experience affecting other SP hallucinations. Results were generally consistent with this hypothesis. In particular, associations among, and temporal stability of, sensory hallucinations were largely explained by their common association with FP. The findings are consistent with REM initiation of a threat activated vigilance system with pervasive effects on the SP experience and suggest a potential model for the thematic organization of nightmares and dreams more generally. (shrink)

Nicolas Malebranche (1638-1715) holds that the senses, imagination, and passions aim at survival and the satisfaction of the body’s needs, rather than truth or the good of the mind. Each of these faculties makes a distinctive and, indeed, an indispensable contribution to the preservation of life. Commentators have largely focused on how the senses keep us alive. By comparison, the imagination and passions have been neglected. In this paper, I reconstruct Malebranche’s account of how the imagination contributes to the preservation (...) of the body by compensating for the limitations of the senses. First, the imagination represents non-actual states of affairs, such as probable or possible future states. Second, the imagination forges new and often helpful associations based on past experiences. Third, the imagination (mis)represents that objects will cause pleasure and pain, thereby imbuing them with emotional significance they would otherwise lack. Together, these features flesh out Malebranche’s view that the imagination is necessary for the preservation of life. (shrink)

Religion and the Rebel, Colin Wilson's second volume from his internationally acclaimed Outsider Cycle, is a casebook about and for rebels. With inspirational wisdom and engaging clarity, Wilson shows us that the purpose of religion, of our personal relationship with the sacred and the all-pervading mystery of existence, is to expand our consciousness and intensify our sense of life. Wilson heroically claims that the power to create meaning resides in our mental and spiritual discipline. Examining the lives and works (...) of Nietzsche, Kierkegaard, Rilke, Shaw, Pascal, Swedenborg, Rimbaud and Scott Fitzgerald, among others, Wilson explores the main existential questions and shows how these remarkable writers, scientists, philosophers and poets faced their need for transcendence. Like many of us, they were driven by a need to become more than men. Religion and the Rebel is an outstanding and enjoyable book that combines philosophical analysis, historical interest, and religious insight. (shrink)

Since the 1980s, there has been a steady growth of interest in the psychological mechanisms that regulate normal emotional experience. In this same period, cognitive-experimental researchers have sought to delineate the information processing biases that characterize emotional disorders. Exciting potential synergies exist between these two areas of investigation. In this article, we consider ways in which reciprocal benefits could be gained by the constructive transfer of theoretical ideas and methodological approaches between emotion regulation researchers and cognitive-experimental investigators. We also discuss (...) how recent innovations within each field can profitably impact upon progress within the other. It is concluded that the overlap in conceptual constructs, and the convergence of complementary investigative techniques, between these two research domains, provide opportunities for creative synthesis that could significantly enrich understanding of normal and abnormal emotion across future years. (shrink)

How to imagine the imagination is a topic that draws philosophers the way flowers draw honeybees. From Plato and Aristotle to Wittgenstein and Sartre, philosophers have talked and written about this most elusive of topics--that is, until contemporary analytic philosophy of mind developed. Perhaps it is the vast range of the topic that has scared off our contemporaries, ranging as it does from mental images to daydreams. The guiding thread of this book is the distinction Colin McGinn draws between (...) perception and imagination. Clearly, seeing an object is similar in certain respects to forming a mental image of it, but it is also different. McGinn shows what the differences are, arguing that imagination is a sui generis mental faculty. He goes on to discuss the nature of dreaming and madness, contending that these are primarily imaginative phenomena. In the second half of the book McGinn focuses on what he calls cognitive (as opposed to sensory) imagination, and investigates the role of imagination in logical reasoning, belief formation, the understanding of negation and possibility, and the comprehension of meaning. His overall claim is that imagination pervades our mental life, obeys its own distinctive principles, and merits much more attention. (shrink)

Ubuntu as a living spirit of liberation -- Ubuntu for warriors : introduction -- Ubuntu for King Shaka and warriors -- Ubuntu for Nelson Mandela and war -- Ubuntu for Archbishop Tutu and Just War -- Ubuntu for Winnie Madikizela-Mandela and honour -- Ubuntu for Kenneth Kaunda, pacifism and war -- Ubuntu for Steve Biko and the envisioned warrior.

Recent advances in genetic research pose many complex problems for moral and political philosophers. On the one hand, these advances promise great things. Genetic enhancement techniques might allow us to prevent or cure a variety of debilitating diseases. But on the other hand, talk about intervening in people's genetic make-up conjures up memories of the sinister episodes of past eugenic movements. Such movements violated the most basic principles of justice. How can society capitalize on the benefits of genetic intervention and (...) yet avoid the injustices of past eugenic movements? What basic moral principles should guide public policy and individual choice concerning the use of genetic interventions? These important questions are tackled by Allen Buchanan, Dan Brock, Norman Daniels, and Daniel Wikler inFrom Chance to Choice: Genetics and Justice. This book brings together the thoughts of leading scholars in the field and is likely to set the agenda for serious debate on this topic. (shrink)

The concept of opposites is a crucial one at the early elementary level. Learning opposites opens up a reader’s vocabulary and ability to communicate. This colorful volume is a helpful aid for teaching and reviewing opposites, displaying opposite pairs visually next to the accompanying accessible text. Readers are encouraged to identify opposites in their own world, reinforcing these essential ideas in their daily lives.

I offer a major reassessment of Foucault’s philosophico-historical account of the basic problems of modernity. I revise our understanding of Foucault by countering the influential misinterpretations proffered by his European interlocutors such as Habermas and Derrida. Central to Foucault’s account of modernity was his work on two crucial concept pairs: freedom/power and reason/madness. I argue against the view of Habermas and Derrida that Foucault understood modern power and reason as straightforwardly opposed to modern freedom and madness. I show that Foucault (...) held a much more complex view of these pairs, a view encapsulated in his term ‘reciprocal incompatibility’. By revising our interpretation of Foucault’s work on modernity in this way, we open the way to much more effective deployments of his critical apparatus. (shrink)

In this chapter, I taxonomize early modern modes of relating self-interest and the common good. I discuss Protestant natural law theory, republicanism, utilitarianism, and—my main focus—Scottish social thought from Adam Smith and others. My aim is twofold. First, historically, I lay out the conceptual field for the early modern relation of self-interest and the common good while giving special attention to Scottish innovations. Second, from a philosophical point of view, I argue that the Scottish theory of the common good offers (...) some of the best conceptual resources for considering the relation of individual and community in present-day large, industrial nation-states and empires. More specifically, I claim that the Scots develop a concept of the common good that is (1) more social and economic than its alternatives, (2) more systemic and less dependent on the psychology and intentions of individuals, and (3) less tied to thick notions of community (including the state) and more amenable to empire. I conclude by bringing out the significance of these claims for our thinking about self-interest, the common good, and community. (shrink)

A 'sensed presence' often accompanies hypnagogic and hypnopompic hallucinations associated with sleep paralysis. Qualitative descriptions of the sensed presence during sleep paralysis are consistent with the experience of a monitoring, stalking predator. It is argued that the sensed presence during sleep paralysis arises because of REM-related endogenous activation of a hypervigilant and biased attentive state, the normal function of which is to resolve ambiguities inherent in biologically relevant threat cues. Given the lack of disambiguating environmental cues, however, the feeling of (...) presence persists as a protracted experience that is both numinous and ominous. This experience, in turn, shapes the elaboration and integration of the concurrent hallucinations that often take on supernatural and daemonic qualities. The sense of presence considered here is an 'other' that is radically different from, and hence more than a mere projection of, the self. Such a numinous sense of otherness may constitute a primordial core consciousness of the animate and sentient in the world around us. (shrink)