Many philosophers believe that the traditional problem of our knowledge of the external world was dissolved by Wittgestein and others. They argue that it was not really a problem - just a linguistic `confusion' that did not actually require a solution. Bruce Aune argues that they are wrong. He casts doubt on the generally accepted reasons for putting the problem aside and proposes an entirely new approach. By considering the history of the problem from Descartes to Kant, (...) Aune shows that analogous arguments create difficulties for the contemporary philosophical consensus. He makes it clear that the problem remains acute, particualarly for our understanding of scientific evidence. The solution he proposes draws upon contemporary philosophy of science and probability theory. (shrink)

_'Philosophy, from the earliest times, has made greater claims, and acheived fewer results than any other branch of learning... I believe that the time has now arrived when this unsatisfactory state of affairs can be brought to an end'_ - _Bertrand Russell_ So begins _Our Knowledge of the Eternal World_, Bertrand Russell's classic attempt to show by means of examples, the nature, capacity and limitations of the logico-analytical method in philosophy.

This paper, an extract from my Marxism and Materialism: Studies in Marxist Theory of Knowledge, discusses the epistemological status of philosophical realism. I take realism to be a necessary part of what Marx meant by 'materialism'. I argue that there are no valid, non-question-begging, decuctive arguments for the truth of realism; nor does empirical science inductively 'confirm' realism, in any technical sense of 'confirmation'. I argue that the relationship between realism and science is one of methodological continuity, in a (...) sense difficult to specify exactly, since the denial of the essential independence from the mind of the material world ends in theology, at least in the tradition of absolute idealism. I then examine Lenin's Materialism and Empirio-Criticism, in which I claim to find the same argument about methodological continuity, and show how this claim might be applied to the tradition of subjective idealism, with its use of counterfactuals and logically possible experiences in the 'reduction' of the physical world to experience. (shrink)

The problem of how we can know the existence and nature of the world external to our mind is one of the oldest and most difficult in philosophy. The discussion by John Locke (1632-1704) of knowledge of the external world have proved to be some of the most confusing and difficult passages of his entire body of philosophical work.

We can and do reflect in very general terms on human beings and their place in the world, and we do so for a number of reasons and in a variety of ways. We can notice similarities between human beings and other parts of nature, or differences between them and most other things, or even respects in which they are unique in the world as we know it. Human beings are born and grow and they decline and die. (...) They are the only things in the universe who laugh. Human beings also act. Unlike rocks on a mountainside or branches of a tree, they do not just move, they do things. Other animals also do things, but humans differ from them in the extent to which they think about what to do, and then act as a result of that deliberation. And, not coincidentally, human beings also know things about the world around them. Knowledge is essential to deliberation and to informed action. (shrink)

The longstanding critical refrain that Virginia Woolf's fiction represents a turn "inward" to the vagaries of the inner life has more recently been countered with an "outward" approach emphasizing Woolf's interest in the material world, its everyday objects and their social and political significance. Yet one of the most curious and pervasive features of Woolf's oeuvre is that characters are so frequently wrong in their perceptions. This essay consolidates the inward and outward approaches by tracing the trope of misperception (...) in Woolf's fiction as well as in her conceptions of the work of author and reader. For Woolf, the modern literary experience derives from the nature of the faculties of perception, the tenuous points of connectionand disjunctionbetween the inner and the outer worlds. (shrink)

First published in 2002. Routledge is an imprint of Taylor & Francis, an informa company.

Conscious experience of the sensation of smell provides exemplars of the sensation exhibiting to us what it is like. These exemplars of experiences can become vehicles or terms of representation and meaning. I call this exemplar representation and the process exemplarization. The notion of exemplarization is indebted to Hume and Goodman. I modify the notion here to apply to the sensation of smell. Exemplar representation differs from verbal representation because the exemplar, like a sample, exhibits what the represented items smell (...) like, a perfume, a spice, or an animal. The exemplar represents the sensation and, at the same, represents external objects, my example is the spray of a skunk, by exhibiting what a skunk smells like. The exemplar is part of the meaning and conception of the external object. This solves the problem, as Reid insisted, of how experience of smell justifies perceptual belief in the existence of external objects. The meaning of thought and discourse about external objects is not exhausted by the exemplarization of the sensation of smell, but the exemplar becomes evidence of their existence as part of the meaning of what they smell like. The evidence and justification of the exemplar is fallible and defeasible. However, exemplar justification, when undefeated by error in the way it coheres with a background system, becomes knowledge of the external world. (shrink)

In the third Meditation once having arrived at the conclusion that a perfect being exists, Descartes infers that this perfect being could not be a deceiver. I maintain that there is no valid way he can move from his conclusion that a perfect being exists to the conclusion that this being cannot be a deceiver. In order to see the difficulties with this inference it is necessary to examine the use of the idea of perfection in the argument for the (...) existence of the perfect being, but I will not otherwise concern myself with the validity of the argument for the existence of God. (shrink)

Questions concerning perception are as old as the field of philosophy itself. Using the first-person perspective as a starting point and philosophical documents, the study examines the relationship between knowledge and perception. The problem is that of how one knows what one immediately perceives. The everyday belief that an object of perception is known to be a material object on grounds of perception is demonstrated as unreliable. It is possible that directly perceived sensible particulars are mind-internal images, shapes, sounds, (...) touches, tastes and smells. According to the appearance/reality distinction, the world of perception is the apparent realm, not the real external world. However, the distinction does not necessarily refute the existence of the external world. We have a causal connection with the external world via mind-internal particulars, and therefore we have indirect knowledge about the external world through perceptual experience. The research especially concerns the reasons for George Berkeley’s claim that material things are mind-dependent ideas that really are perceived. The necessity of a perceiver’s own qualities for perceptual experience, such as mind, consciousness, and the brain, supports the causal theory of perception. Finally, it is asked why mind-internal entities are present when perceiving an object. Perception would not directly discern material objects without the presupposition of extra entities located between a perceiver and the external world. Nevertheless, the results show that perception is not sufficient to know what a perceptual object is, and that the existence of appearances is necessary to know that the external world is being perceived. However, the impossibility of matter does not follow from Berkeley’s theory. The main result of the research is that singular knowledge claims about the external world never refer directly and immediately to the objects of the external world. A perceiver’s own qualities affect how perceptual objects appear in a perceptual situation. (shrink)

This article demonstrates how and why "meditations on first philosophy" is an unsuccessful attempt by rene descartes to reconcile his rationalist philosophy with his apparently conflicting voluntarism and with his adherence to certain theological principles.

How are we to understand philosophical claims about sense perception being direct versus indirect? There are multiple relevant notions of perceptual directness, so I argue. Perception of external objects may be direct on some notions, while indirect on others. My interest is with the sense in which ideas count as perceptual mediators in the philosophy of Descartes and Locke. This paper has two broader aims. The first is to clarify four main notions of perceptual directness. The second is to (...) support my contention that in the texts characterizing ideas as immediate objects of perception, Descartes and Locke are invoking the notion of directness I call ‘objectual’. This notion is modeled on the way a picture mediates perception of the pictured object. The upshot of my account is that – with respect to the objectual notion of directness – Descartes and Locke each hold an indirect theory of perception. (shrink)

Bertrand Russell’s philosophy around 1914 is often interpreted as phenomenalism, the view that sensations are not caused by but rather constitute ordinary objects. Indeed, prima facie, his 1914 Our Knowledge of the External World reduces objects to sense-data. However, Russell did not think his view was phenomenalist, and he said that he never gave up either the causal theory of perception or a realist understanding of objects. In this paper I offer an explanation of why Russell might (...) have undertaken the constructionist project of his 1914 work while not considering the resulting position that objects can be constructed out of sense-data to be phenomenalist. (shrink)

The paper investigates the senses in which the world may be thought external, and argues that none of them supports doubt about the possibility of knowledge of the world. Scepticism sometimes depends on certain erroneous conceptions of perception, especially those which lead to belief in 'inner, representational states'. How we perceive things depends on the satisfaction of certain general conditions--on what concepts we have, on the kind of senses we have, and so on a kind of (...) anthropocentricity; but this does not prevent objectivity, even in the case of secondary qualities. (shrink)

A skeptic claims that I do not have knowledge of the external world. It has been thought that the skeptic reaches this conclusion because she employs unusually stringent standards for knowledge. But the skeptic does not employ unusually high standards for knowledge. Rather, she employs unusually restrictive standards of evidence. Thus, her claim that we lack knowledge of the external world is supported by considerations that would equally support the claim that we (...) lack evidence for our beliefs about the external world. These considerations do not threaten the truth of our ordinary attributions of evidence, however, for such attributions are context-sensitive in their semantics. It is argued that this solution to the problem of the external world enjoys all of the benefits, and suffers none of the problems, of other solutions to the problem of the external world. (shrink)

In "Externalism, Self-Knowledge and Skepticism,"' Kevin Falvey and Joseph Owens argue that externalism with respect to mental content does not engender skepticism about knowledge of content. They go on to argue that even when externalism is freed from epistemological difficulties, the thesis cannot be used against Cartesian skepticism about knowledge of the external world. I would like to raise some questions about these claims.

In this paper, I compare and contrast two kinds of scepticism, Cartesian scepticism about the external world and Quinean scepticism about meaning. I expose Quine's metaphysical claim that there are no facts of the matter about meaning as a sceptical response to a sceptical problem regarding the possibility of our knowledge of meanings. I argue that this sceptical response is overkill; for the sceptical problem about our knowledge of meanings may receive a treatment similar to the (...) naturalistic treatment Quine himself offered for the problem of our knowledge of the external world. Further, I suggest that a naturalistic treatment of Quinean meaning scepticism may fare better than Quine's own naturalistic treatment of external world scepticism. (shrink)

This chapter examines Russell’s appreciation of the relevance of psychology for the theory of knowledge, especially in connection with the problem of the external world, and the background for this appreciation in British philosophy of the eighteenth and nineteenth centuries. Russell wrote in 1914 that “the epistemological order of deduction includes both logical and psychological considerations.” Indeed, the notion of what is “psychologically derivative” played a crucial role in his epistemological analysis from this time. His epistemological discussions (...) engage psychological factors in the perception of external objects that had been closely examined in the nineteenth century, among other places in J. S. Mill’s response to William Hamilton’s conception of knowledge of the external world. These considerations came to Russell in various ways, including his contact with British Empiricism (Mill, with Berkeley, Hume, and Reid as background), his engagement with Austrian philosophy, his close acquaintance with the philosophy and psychology of William James, and his exposure to contemporary British writings concerning the problem of the external world. The latter writings provide a crucial context within which natural scientific psychology came to be seen as distinct from epistemology and yet as relevant to its concerns. (shrink)

This paper compares the claims about our knowledge of the external world presented by Rudolf Carnap, in the book known as the Aufbau, to those of Clarence Irving Lewis, in Mind and the World-Order. This comparison is made in terms of the opposition to Kantian epistemology that both books establish; the Aufbau is regarded as the peak of the logicist tradition and Mind and the World-Order is taken in continuity with pragmatism. It is found that (...) both books present knowledge of the external world as a consequence of a structural organization of human experience. However, there is an important point of divergence: the concept of verification each author adopts is different, such a concept was even a matter of discussion between Lewis and the Vienna Circle. This paper shows this disagreement but also shows how Carnap changed his point of view in the decade after the Aufbau was published, towards a standpoint which is much closer to Lewis’s ideas. In that process, nevertheless, Carnap changed his focus and did not deal with the problem of the external world anymore. This paper also seeks to draw attention to some features of the relation between Carnap and the pragmatist tradition which have only recently started to attract interest. (shrink)

In contrast to the recent trend of taking external world skepticism as a narrow problem for a demanding conception of "objective" or "certain" knowledge about the world, my thesis offers a re-examination of the distinctively perceptual basis of the skeptical problem. On my view the skeptic challenges the very possibility of rationally justifying beliefs in so far as they are based on sense experience, a characterization that helps to explain the continuity into the modern period of (...) the ancient skeptical challenge to the pretensions of reason. What is newly radical in external world skepticism is the discovery of the inner realm of the mind, and hence, of inner states as a component of every sense experience. ;I argue that the skeptic relies upon a distinctive, intuitively compelling, conception of sense experience which I call the causal model of experience. This is the view that experience is constituted by self-standing subjective experiences and their external causes, where cause and effect are logically distinct existences. The causal model is not to be identified with a view of perception as epistemically mediated by a "veil of ideas", though it can lead one to embrace that doctrine. My aim is twofold: to understand the motivation for the skeptic's causal model of experience; and to show that, when thought through, this model can ultimately be shown to be incoherent. ;The causal model has its roots in 17th century scientific metaphysics and the idea that the world can be exhaustively explained in terms of mechanical interactions between primary-qualified corpuscles governed by mathematically describable laws. I argue that the perceptual relation is not a mere efficient causal relation and I show that the skeptic is in the incoherent position of wanting a "private" language to describe his subjective experiences despite insisting on conditions of autonomy that deprive his terms of the normativity that is a necessary condition of meaning. Thus I do not answer the skeptical problem so much as undercut the basis upon which it is posed in the first place. (shrink)

One of the most important and perennially debated philosophical questions is whether we can have knowledge of the external world. Butchvarov here considers whether and how skepticism with regard to such knowledge can be refuted or at least answered. He argues that only a direct realist view of perception has any hope of providing a compelling response to the skeptic and introduces the radical innovation that the direct object of perceptual, and even dreaming and hallucinatory, experience (...) is always a material object, but not necessarily one that actually exists. This leads him to a metaphysics in which reality is ultimately constructed by human decisions out of objects that are ontologically more basic but which cannot be said in themselves to be either real or unreal. (shrink)

Locke's Essay concerning Human Understanding has generally been read as primarily concerned with epistemology. In particular, it has been claimed that the Essay attempts to defeat epistemological skepticism, but fails in this enterprise because of the veiling character of Locke's ideas. By way of reexamination of the texts in question I show that epistemological skepticism is not the topic of the Essay, and that there is not sufficient reason to claim that Locke's account of knowledge leads to epistemological skepticism. (...) I argue, moreover, that the motivating topic of the Essay is moral skepticism, and I explain the central role of ch. 8, book 2 in Locke's argumentation for the claim that we may achieve a science of morality. I conclude with an account of some of practical consequences of a science of morality, as conceived by Locke. (shrink)

I look at incompatibilist arguments aimed at showing that the conjunction of the thesis that a subject has privileged, a priori access to the contents of her own thoughts, on the one hand, and of semantic externalism, on the other, lead to a putatively absurd conclusion, namely, a priori knowledge of the external world. I focus on arguments involving a variety of externalism resulting from the singularity or object-dependence of certain terms such as the demonstrative ‘that’. McKinsey (...) argues that incompatibilist arguments employing such externalist theses are at their strongest, and conclusively show that privileged access must be rejected. While I agree on the truth of the relevant externalist theses, I show that all plausible versions of the incompatibilist reductio argument as applied to such theses are fundamentally flawed, for these versions of the argument must make assumptions that lead to putatively absurd knowledge of the external world independently of the thesis of privileged access. (shrink)

Research on autonomy exhibits a constellation of variegated perspectives, from the problem of the crude deprivation of it to the study of the distinction between personal and moral autonomy, and from the problem of the role of a “self as narrator”, who classifies its own actions as autonomous or not, to the importance of the political side and, finally, to the need of defending and enhancing human autonomy. My precise concern in this article will be the examination of the role (...) of the human cognitive processes that give rise to the most important ways of tracking the external world and human behavior in their relationship to some central aspects of human autonomy, also to the aim of clarifying the link between autonomy and the ownership of our own destinies. I will also focus on the preservation of human autonomy as an important component of human dignity, seeing it as strictly associated with knowledge and, even more significantly, with the constant production of new and pertinent knowledge of various kinds. I will also describe the important _paradox of autonomy_, which resorts to the fact that, on one side, cognitions (from science to morality, from common knowledge to philosophy, etc.) are necessary to be able to perform autonomous actions and decisions because we need believe in rules that justify and identify our choices, but, on the other side, these same rules can become (for example, as a result of contrasting with other internalized and approved moral rules or knowledge contents) oppressive norms that diminish autonomy and can thus, paradoxically, defeat agents’ autonomous capacity “to take ownership”. (shrink)