A number of prominent metaphysicians have recently defended the idea of material plenitude: wherever there is one material object, there is in fact a great multitude of them, all coincident and sharing many properties, but differing in which of these properties they have essentially and which accidentally. The main goal of this paper is to put on the agenda an important theoretical decision that plenitudinists face, regarding whether their plenitude is egalitarian or elitist, depending on whether or not they take (...) all objects that coincide at a certain location to be in some sense ontologically on a par. Many current proponents of plenitude tend toward egalitarianism. But current proponents often also point to an Aristotelian tradition they claim to carry on; indeed, the view is sometimes referred to as “neo-Aristotelian plenitude.” By examining some of the historical protagonists of Aristotelian plenitude, however, I show that they defended rather an elitist form of plenitude, wherein a single coincident is ontologically privileged in every occupied region. In the final section of the paper, I also try to articulate the basic motivation for each outlook, by way of initiating discussion of which view plenitudinists should believe. (shrink)

Debunking arguments aim to undermine common sense beliefs by showing that they are not explanatorily or causally linked to the entities they are purportedly about. Rarely are facts about the aetiology of common sense beliefs invoked for the opposite aim, that is, to support the reality of entities that furnish our manifest image of the world. Here I undertake this sort of un-debunking project. My focus is on the metaphysics of ordinary physical objects. I use the view of perception as (...) approximate Bayesian inference to show how representations of ordinary objects can be extracted from sensory input in a rational and truth-tracking manner. Drawing an analogy between perception construed as Bayesian hypothesis testing and scientific inquiry, I sketch out how some of the intuitions that traditionally inspired arguments for scientific realism also find application with regards to proverbial tables and chairs. (shrink)

In recent years philosophers have been interested in the methodology of metaphysics. Most of these developments are related to formal work in logic or physics, often against the backdrop of the Carnap-Quine debate on ontology. Drawing on Quine’s later work, I argue that a psychological or cognitive perspective on metaphysical topics may be a valuable addition to contemporary metametaphysics. The method is illustrated by means of cognitive studies of the notions “identity,” “vagueness,” and “object” and is compared to other extant (...) metametaphysical positions. (shrink)

In Elder-Vass’s response to my it is maintained: that a social object is not identical with but is merely composed of its suitably interrelated parts; that a social object is necessarily indistinguishable in terms of its causal capacities from its interrelated parts; and that ontological individualism lacks an adequate ontological justification. In this reply, I argue that in view of the so-called redescription principle defended by Elder-Vass ought to be reformulated and renamed; that the conjunction of and renders social objects (...) causally redundant; and that ontological individualism can be coherently formulated and theoretically justified within Elder-Vass’s own metaphysics of objects with causal powers. (shrink)

Debunking arguments typically attempt to show that a set of beliefs or other intensional mental states bear no appropriate explanatory connection to the facts they purport to be about. That is, a debunking argument will attempt to show that beliefs about p are not held because of the facts about p. Such beliefs, if true, would then only be accidentally so. Thus, their causal origins constitute an undermining defeater. Debunking arguments arise in various philosophical domains, targeting beliefs about morality, the (...) existence of God, logic, and others. They have also arisen in material-object metaphysics, often aimed at debunking common-sense ontology. And while most of these arguments feature appeals to ‘biological and cultural contingencies’ that are ostensibly responsible for our beliefs about which kinds of objects exist, few of them take a serious look at what those contingencies might actually be. The purpose of this paper is twofold. First, to remedy this by providing empirical substantiation for a key premise in these debunking arguments by examining data from cognitive science, evolutionary biology, and developmental psychology that support a ‘debunking explanation’ of our common-sense beliefs and intuitions about which objects exist. Second, to argue that such data also undermines a particular kind of rationalist defense of common-sense ontology, sometimes employed as a response to the debunking threat. (shrink)

In this thesis I seek to advance our understanding of what intuitions are. I argue that intuitions are experiences of a certain kind. In particular, they are experiences with representational content, and with a certain phenomenal character. -/- In Chapter 1 I identify our target and provide some important reliminaries. Intuitions are mental states, but which ones? Giving examples helps: a person has an intuition when it seems to her that torturing the innocent is wrong, or that if something is (...) red it is coloured. We can also provide an initial characterisation of the state by saying that it has representational content, often causes belief, and appears to justify belief. In addition, there is something it is like to have an intuition: intuition has a certain phenomenal character. -/- Some argue that intuition does not explain anything which cannot be explained by other mental states. One version of this view takes intuition to reduce to belief. In Chapter 2 I argue that this entails that agents are rationally criticisable in situations where we know they are not, and that such views are therefore untenable. A parallel argument shows that the corresponding approach to perception fails. This suggests a similarity in nature: both intuition and perception are experiences. -/- Others take intuition to reduce to a disposition to have a belief. In Chapter 3 I consider a line of argument against such views, find it unsuccessful, and present two new arguments. One is likely to be dialectically ineffective. The other suffers no such weakness: it shows that the proposed reduction fails. As before, the argument also applies to perception, and suggests that intuition and perception are both experiences. -/- In the remainder of the thesis I develop an account of intuition as an experience. I distinguish between content-specific and attitude-specific phenomenology, and argue that intuition lacks the former (Chapter 4), but has the latter (Chapter 5). This allows us to say what intuition is: it is is an experience with representational content and with attitude-specific phenomenology of a certain kind. -/- In Chapter 6 I put this account of intuition to use. When a person has a perceptual or intuitional experience, I argue that simply having the experience is what makes the subject justified in believing what the experience represents. Moreover, what explains that intuition and perception can justify belief in this way is precisely their phenomenal character. (shrink)

Empirical research has recently emerged as a key method for understanding the nature of causation, and our concept of causation. One thread of research aims to test intuitions about the nature of causation in a variety of classic cases. These experiments have principally been used to try to resolve certain debates within analytic philosophy, most notably that between proponents of transference and dependence views of causation. The other major thread of empirical research on our concept of causation has investigated the (...) role that normative considerations play in causal judgments. These experimental results suggest that philosophical accounts of our concept of causation should take a broader view of what might be relevant. For both lines of research, we describe some of the significant experiments and outline key philosophical morals that have been drawn, all while pointing out various limitations. We conclude by considering other kinds of empirical research that should be philosophically interesting for those studying the nature of causation and our concept of causation. In particular, we point towards the need for philosophical research about causal perception, causal reasoning, and causal learning, as well as ways in which this research could play a role in prescriptive metaphysics. (shrink)

Though most of analytic philosophy is based upon intuitions, some philosophers are beginning to question whether intuitions are an appropriate basis for philosophical theory. This paper responds to the arguments of some contemporary philosophers who hold that intuitions should not be treated as evidence for anything other than our contingent psychological constitution. It begins with a demonstration that skeptical arguments by Gilbert Harman and Alvin Goldman are variations on an argument with the potential to undermine the use of intuitions in (...) much philosophical inquiry. After a demonstration that Nicholas Sturgeon’s response to Harman’s argument is inadequate, it argues that all of the instances of the skeptical argument are unsuccessful because they are epistemically self-defeating. (shrink)

In Elder-Vass’s response to my critical discussion of his social ontology, it is maintained (1) that a social object is not identical with but is merely composed of its suitably interrelated parts, (2) that a social object is necessarily indistinguishable in terms of its causal capacities from its interrelated parts, and (3) that ontological individualism lacks an adequate ontological justification. In this reply, I argue that in view of (1) the so-called redescription principle defended by Elder-Vass ought to be reformulated (...) and renamed; that the conjunction of (1) and (2) renders social objects causally redundant; and that ontological individualism can be coherently formulated and theoretically justified within Elder-Vass’s own metaphysics of objects with causal powers. (shrink)

According to Herman Cappelen and Bernard Molyneux, it is widely assumed that intuitions are used as evidence for philosophical theories in all areas of philosophy. Philosophers’ self-image, however, is wrong. This wrong self-image, so they argue, has merely misled metaphilosophers, but has had no substantial implications for philosophical practices. This article examines the role of intuitions in the project of defining art. In accordance with Cappelen and Molyneux, I demonstrate that philosophers of art believe intuitions are used as evidence for (...) their definitions of art and that this belief is false. In contrast with Cappelen and Molyneux, I maintain that philosophers of art’s false self-image causes substantial damage to their philosophical practice. Firstly, intuitions often are used as persuaders, while, in fact, they do not add philosophical force to the defended position. Secondly, and more importantly, intuition-talk and philosophers’ wrong self-image are partly responsible for the confusi.. (shrink)

In this review essay, I examine the central tenets of sociologist Dave Elder-Vass’s recent contribution to social ontology, as put forth in his book The Causal Power of Social Structures: Emergence, Structure and Agency. Elder-Vass takes issue with ontological individualists and maintains that social structures exist and have causal powers in their own right. I argue that he fails to establish his main theses: he shows neither that social structures have causal powers “in their own right” (in any sense of (...) this expression) nor that they exist. (shrink)

This dissertation offers new proposals, based on a philosophical appraisal of scientific findings, to address old philosophical problems regarding our immediate acquaintance with time. It focuses on two topics: our capacity to determine the length of intervals and our acquaintance with the present moment. A review of the relevant scientific findings concerning these topics grounds the main contributions of this dissertation. Thus, this study introduces to the philosophical literature an empirically adequate way to talk about how the mind represents time (...) at the most fundamental level. In order to account for our immediate acquaintance with the duration of intervals, a theoretical framework for classifying clocks is used to explain why the representational outputs of the circadian clock and the stopwatch have metric structure. A philosophical analysis of these outputs is proposed to classify them and explain their properties. With respect to our immediate acquaintance with the present, a novel two-phase model of the present is proposed. This model shows that there are two forms of acquaintance with the present, which has consequences for contemporary debates in the philosophy of time. (shrink)

This thesis evaluates a variety of important modern approaches to the study of the mind/brain in the light of recent developments in the debate about how evidence should be used to support a theory and its constituent hypotheses. Although all these approaches are ostensibly based upon the principles of scientific realism, this evaluation will demonstrate that all of them fall well short of these requirements. Consequently, the more modern, co-evolutionary theories of the mind/brain do not constitute the significant advance upon (...) more traditional theories that their authors take them to be. There are two fundamental elements within my discussion of the relationship between evidence and the constituent hypotheses of a theory. Firstly, I shall demonstrate that the traditional veil-of-perception issue has a wider relevance than that which has historically been attributed to it, since it is the paradigm case of an attempt to construct a two level theory on the basis of evidence tha~ does not adequately support either hypothesis. This interpretation of the issue can be represented by constructing a semantically inconsistent tetrad. It is shown that similar tetrads can be constructed for each of the theories of the mind/brain discussed in this thesis. Secondly, I shall argue that the theories discussed all employ a variety of the bootstrap strategy. This strategy is a relatively recent development in the philosophy of science, which suggests a way in which the same evidence can be used to generate both a general and a specific hypothesis within a theory without violating the constraints of scientific realism. However, I contend that recent use of this strategy in the investigation of mind is largely unsatisfactory as a result of a neglect of structural as well as more informal influences upon the kinds of evidence employed to support the hypotheses contained in the theories. The thesis is divided into three major sections. The first (Section A) discusses the influence of the motivations of the individual theorists upon their arguments and provides a critical discussion of the issues of the veil-of-perception and bootstrapping. The second section (Section B) comprises a detailed examination of a range of modern theories of the mind/brain and critically analyses their success. The final section (Section C) draws together general conclusions and methodological consequences of the detailed analysis of the nature of realism and evidence in the philosophy of mind. (shrink)