Transcendental Replies to Skepticism

Do skeptical arguments undermine reason, as Hume supposes? In this paper, I argue that they do not and that skepticism is thus no threat to dogmatism about the possibility of knowledge.

I have developed transcendental arguments to refute several versions of Nick Bostrom’s simulation hypothesis. I called some of these arguments the SIM-style argument. In this paper, I have four main aims. First, I employ the SIM-style argument to remedy a defect in Hilary Putnam’s Brain-in-vat argument. Second, I show that the most radical skepticism, which Tim Button called the nightmarish Cartesian skepticism, can be refuted by the SIM-style argument or by another transcendental argument I develop here. Third, I compare my (...) approach to radical skepticisms with Donald Davidson’s, as it is often regarded as an exemplar of transcendental arguments. Fourth, I explain how the prominent objections, mainly developed by Barry Stroud, to transcendental arguments can incur two undesirable results: psychologism and Kantian skepticism. (shrink)

This book offers a defence of Wrightean epistemic entitlement, one of the most prominent approaches to hinge epistemology. It also systematically explores the connections between virtue epistemology and hinge epistemology. -/- According to hinge epistemology, any human belief set is built within and upon a framework of pre-evidential propositions – hinges – that cannot be justified. Epistemic entitlement argues that we are entitled to trust our hinges. But there remains a problem. Entitlement is inherently unconstrained and arbitrary: We can be (...) entitled to any hinge proposition under the right circumstances. In this book, the author argues that we need a non-arbitrariness clause that protects entitlement from defeat. This clause, he argues, is to require epistemic virtue. Virtuous cognitive dispositions provide the non-arbitrariness clause that protects entitlement from defeat. The epistemic character of the agent who holds a particular set of hinges tells us something about the hinges’ epistemic status. Conversely, epistemic virtues are cognitive dispositions and capacities that rely on hinge propositions – without trusting in some hinges, we would be unable to exercise our virtues. -/- Trust Responsibly will appeal to scholars and advanced students working on epistemology, Wittgenstein, and virtues. (shrink)

Nick Bostrom considered a number of simulations and contended that the probability that we are living in one of them is high or at least nonzero. I present arguments to refute the claim that we are or might be in any one of them. -/- Here is a highly dense reasoning why we are not in the simulation: -/- Suppose Simon is in the simulation, and he entertains the idea that he is in the simulation. And he thinks about the (...) word 'apple'. But since he is always in the simulation, he has never interacted with an actual apple, which the word 'apple' refers to. -/- Then Simon must think that "if I am in the simulation, then I never interact with an actual apple, and my understanding about the word 'apple' can only be given by the simulator. And this means I never exercise my reason to gain the understanding about the word 'apple', and never exercise my reason to apply the word 'apple'. Consequently, since what I am thinking right now (namely, this entire thought within the double quotation marks) involves the word 'apple', I am not using reason to think what I am thinking." -/- By denying he is using reason to think, Simon is being incoherent in thinking the preceding thought. To avoid being incoherent, Simon must reject the idea that he is in the simulation. -/- For the similar reason, if we think we are in the simulation, we are being incoherent. More simply, to think that we are in the simulation is to be incoherent. Therefore we cannot actually think that we are in the simulation. Hence, we are not in the simulation. -/- The whole paper is to flesh out the reasoning above. (shrink)

Recent developments of transcendental arguments reflect the struggle to accommodate Stroud’s devastating objection by giving up on failed expectations in providing proof of what the external-world skeptic calls into question: knowledge of the existence of the outside world. Since Strawson's capitulation in 1984, the truth-direct transcendental arguments have given way to modest belief-direct transcendental arguments that concede that truth-direct transcendental arguments are doomed to fail to establish ambitious conclusions about reality but at the same time hold that they can nonetheless (...) successfully establish modest conceptual connection between the major beliefs within our conceptual scheme. This article seeks the “reactionary” rehabilitation of the old hubris: a new defense of the truth-direct transcendental argument. I set forth a new reconstruction of Kant’s Refutation as a successful truth-directed transcendental argument that meets Stroud’s objection. As with several papers and books about the theme, this article is of a systematic and a historical nature by connecting the contemporary debate about transcendental argument with Kant’s philosophy. (shrink)

I develop a new version of the ordinary language response to skepticism. My version is based on premises about the practical functions served by our epistemic words. I end by exploring how my argument against skepticism is interestingly non-circular and philosophically valuable.

Davidson argues that his version of interpretivism entails that sceptical scenarios are impossible, thus offering a response to any sceptical argument that depends upon the possibility of sceptical scenarios. It has been objected that Davidson’s interpretivism does not entail the impossibility of sceptical scenarios due to the possibility that interpreter and speaker are in a shared state of massive error, and so this response to scepticism fails. In this paper I show that the objection from the possibility of shared error (...) rests on a misunderstanding of Davidson’s interpretivist position. Properly understood, Davidson’s view does entail that sceptical scenarios are impossible. I also give a reason independent of its anti-sceptical implications to prefer Davidson’s interpretivism over the version of interpretivism erroneously attributed to him by those who object to his anti-sceptical argument. (shrink)

Putnam’s vat argument is intended to show that I am not a permanently envatted brain. The argument holds promise as a response to vat scepticism, which depends on the claim that I do not know that I am not a permanently envatted brain. However, there is a widespread idea that the vat argument cannot fulfil this promise, because to employ the argument as a response to vat scepticism I would have to make assumptions about the content of the premises and/or (...) conclusion of the argument that beg the question against the sceptic. In this paper, I show that this idea is mistaken. (shrink)

_ Source: _Page Count 25 This is a pre-print. Please cite only the revised published version. This paper presents an original, ambitious, truth-directed transcendental argument for the existence of an ‘external world’. It begins with a double-headed starting-point: Stroud’s own remarks on the necessary conditions of language in general, and Hegel’s critique of the “fear of error.” The paper argues that the sceptical challenge requires a particular critical concept of thought as that which may diverge from reality, and that this (...) concept is possible only through reflection on situations of error, in which how things are thought to be diverges from how things really are with independent items in an objective world. The existence of such a world is therefore a necessary condition of the possibility of scepticism: such scepticism is therefore false. I defend the argument against objections from Stroud’s sceptic and others. Drawing on Heidegger, the paper concludes by indicating that the chain of necessary conditions includes practical engagement with the world. (shrink)

The central question of this paper is: what has Kant’s Refutation of Idealism argument proven, if anything? What is the real scandal of philosophy and universal human reason? I argue that Kant’s Refutation argument can only be considered sound if we assume that his target is what I call ‘metaphysical external-world skepticism.’ What is in question is not the ‘existence’ of outside things but their very ‘nature,’ that is, the claim that the thing outside us, which appears to us as (...) a persistent body in space, exists in itself _as a substantia noumenon_. Assuming the indirect-realist view that we only immediately know ideas and that their putative objects are known by inference, the metaphysical external-world skeptic doubts that the nature of things outside oneself is mind-independent. (shrink)

The paper deals with the paradox that rationality demands rational substantiation which can’t be given in principle. Thus it is argued that only intuition can prevail against skepticism and subjectivism. But intuition is "transcendent" to rationality and therefore its acceptance as the substantiation of rationality implies existence of transcendental reality. In itself it has infinite regress qua infinite reiteration of reality levels without any qualitative ontological alteration, therefore only infinite transcendence is able to ground a finite immanence.

In this paper, I argue that, if transcendental arguments are to proceed from premises that are acceptable to the skeptic, the Transcendental Premise, according to which “X is a metaphysically necessary condition for the possibility of Y,” must be grounded in considerations of conceivability and possibility. More explicitly, the Transcendental Premise is based on what Szabó Gendler and Hawthorne call the “conceivability-possibility move.” This “inconceivability-impossibility” move, however, is a problematic argumentative move when advancing transcendental arguments for the following reasons. First, (...) from “S cannot conceive of P” it doesn’t necessarily follow that P is inconceivable. Second, from “P is inconceivable” it doesn’t necessarily follow that P is metaphysically impossible. Third, rather than block skeptical doubts, the conceivability-possibility move introduces skeptical doubts. For these reasons, transcendental arguments fail to deliver on their promise to overcome skeptical doubts. (shrink)

If it works, I can use Putnam’s vat argument to show that I have not always been a brain-in-a-vat. It is widely thought that the vat argument is of no use against closure scepticism – that is, scepticism motivated by arguments that appeal to a closure principle. This is because, even if I can use the vat argument to show that I have not always been a BIV, I cannot use it to show that I was not recently envatted, and (...) it is thought that the claim that I am not justified in thinking that I was not recently envatted is all that the closure sceptic requires. In this paper I first argue that scenarios in which I have been recently envatted are inadequate for the sceptic’s purposes, and so the standard argument that the vat argument is of no use against closure scepticism fails. I then argue that it is not possible to revise the standard argument to meet my objection. I conclude that, if it works, I can use the vat argument as a defence against closure scepticism. (shrink)

In the article of Bueno titled “Davidson and Skepticism: How Not to Respond to the Skeptic,” he intends to demonstrate that although Davidson’s theory of Coherence holds many attractions, it does not entail a response to any kinds of skepticism including Global, Lottery, and Pyrrhonian. In this study, the goal is to criticize the work of Prof. Bueno in connection with two criticisms raised by him over Davidson’s anti-skeptical strategy. Further, by giving some reasons in favor of Davidson’s anti-skepticism argument, (...) it will be shown that neither the above stated criticisms nor the global skepticism response could undermine the validity of anti-skepticism argument. (shrink)

A sympathetic exegesis of themes in Barry Stroud's later writings, with a particular emphasis on the role of a certain conception of "perceptual experience" in generating the skeptical challenge to our knowledge of the external world. The resultant morals are brought to bear on John McDowell's evolving account of the role of contentful "experiences" in providing for empirical thought. For Stroud's response to this essay (and others) see: http://philosophicalskepticism.org/skepsis/numero-14/.

This article aims to provide an account of the relationship between transcendental claims and the project of using transcendental argumentation that differs from the mainstream literature. In much of the literature, such claims are said to have as their primary value the overcoming of various sceptical positions. The author argues that, whilst transcendental arguments may be narrowly characterised as anti-sceptical, transcendental claims do not have to be used in only this way, and in fact can be useful in several areas (...) of philosophy outside the issue of scepticism, and so can be used by transcendental arguments more broadly conceived. The author offers four examples of transcendental claims that are not used in narrow, anti-sceptical transcendental arguments. The author argues that these broader arguments use transcendental claims but not in an anti-sceptical way. From this, the author concludes that given the well-known difficulties transcendental arguments in this narrow sense seem to have had in defeating scepticism, distinguishing narrow transcendental arguments clearly from transcendental claims as such in this manner can provide a way for the latter to still serve an important role in philosophy, by showing how such claims can be used more broadly, regardless of any doubts one may have about the anti-sceptical value of such claims. (shrink)

_ Source: _Page Count 9 Global sceptical arguments seek to undermine vast swathes of our putative knowledge by deploying hypotheses that posit massive deception or error. Local sceptical arguments seek to undermine just a small region of putative knowledge, using hypotheses that posit deception or error of a more mundane kind. Those epistemologists who have devised anti-sceptical strategies have tended to have global sceptical arguments firmly in their sights. I argue here that local sceptical arguments, while less dramatic, ultimately pose (...) just as serious a challenge to our epistemic self-image and that some prominent anti-sceptical strategies are very poorly placed to meet it. (shrink)

Autologos. A dialogue on fundamental logic. - In this dialogue of three dialogue partners, an attempt is made to prove the logical prerequisites of any meaningful dialogue by using transcendental arguments. Among these inescapable logical premises are a semantics as strong as that of modal logic S5, and an epistemic anti-realism.

Several subjects are fully convinced that they are brains in vats whose experiences are hallucinatory. They confront a ‘skeptic’ who raises the possibility that they are not brains in vats who lack and hallucinate hands but ‘brains in skulls’ who have hands and see them. Familiar responses to skepticism are offered in support of the claim that the subjects know they do not have hands. The philosophical significance of this looking-glass approach to skepticism is also discussed. It is suggested that (...) these familiar responses to skepticism do not achieve anything because, if we begin from the assumption that we are brains in vats, we can employ those same responses to skepticism to support the claim that we know we do not have hands. One interlocutor argues that things are not so dismal. The main conversation is framed by a discussion among night watchmen at some sort of skepticism laboratory. (shrink)

In this paper, I attempt to show how Davidson’s anti-sceptical argument can respond to the closureRK-based radical scepticism. My approach will focus on the closureRK principle rather than the possibility that our beliefs could be massively wrong. I first review Davidson’s principle of charity and the triangulation argument, and then I extract his theory on content of a belief. According to this theory, content of a belief is determined by its typical cause and other relevant beliefs. With this constraint on (...) content, I argue that doubt must be local. Furthermore, since one cannot rationally believe that one’s commitment to the cause of beliefs could be false, our commitment to the denial of a sceptical hypothesis is not a knowledge-apt belief. Therefore, the closureRK principle is not applicable to rational evaluations of this commitment. As a result, the closureRK-based sceptical argument fails while the closureRK principle remains. (shrink)

God's necessary existence makes sense. Attempt at a transcendental modal proof. - In this essay I outline a novel three-stage proof of God's necessary existence using transcendental and deductive methods. In the first step of the proof, by retorsion, it is proved that there is at least one sentence that is necessary and inescapable. In the second step, the inescapability of the modal logic supposed in the proof is shown. This step also contains a new argument in favour of epistemic (...) anti-realism. The third step finally proves the necessary existence of the person who proves. The proof thus refers to the subject, the object, and the method of this proof itself. (shrink)

John McDowell has recently changed his line of response to philosophical scepticism about the external world. He now claims to be in a position to use the strategy of transcendental argumentation in order to show the falsity of the sceptic’s misrepresentation of our ordinary epistemic standpoint. Since this transcendental argument begins from a weak and widely shared assumption shared with the sceptic herself the falsity of external world scepticism is now demonstrable even to her. Building on the account of perceptual (...) intentionality defended in the Woodbridge lectures, McDowell argues that the idea of narrow perceptual content is unavailable to anyone, including the sceptic. This argument is assessed by drawing out an analogy with parallel responses to error theories in ethics. (shrink)

In this thesis I give a response to external world scepticism. I first argue that scepticism arises when we accept that it is an empirical question whether I am in a sceptical scenario, that is, a scenario in which my beliefs are coherent, and yet my empirical beliefs are false. The idea that it is an empirical question whether I am in a sceptical scenario gets its plausibility from the realist claim that our empirical beliefs have an objective subject matter. (...) I then attempt to give a response to scepticism that is compatible with this realist claim. Three promising responses to scepticism are considered, but are found to be inadequate. Seeing why these responses are inadequate helps us to appreciate some of the conditions on an adequate response to scepticism. By drawing on the work of Donald Davidson I develop a response to scepticism that is compatible with the realist claim, and that meets these conditions. According to this response, when we get clear about the concept of belief we see that sceptical scenarios are a conceptual impossibility. Thus, just as it is not an empirical question whether I am a married bachelor, it is not an empirical question whether I am in a sceptical scenario, and the argument for scepticism breaks down. (shrink)

Desde Descartes a epistemologia tem se baseado no conhecimento de primeira pessoa. Devemos começar, de acordo com a história usual, com o que é mais certo: o conhecimento de nossas próprias sensações e pensamentos. De uma maneira ou outra, progredimos então, se pudermos, para o conhecimento de um mundo externo objetivo. Há por fim uma passagem tênue ao conhecimento das outras mentes. Defendo uma total revisão desse quadro. Todo pensamento proposicional, quer positivo ou cético, sobre o interior ou sobre o (...) exterior, exige a posse do conceito de verdade objetiva, e esse conceito está acessível apenas a criaturas que estão em comunicação com outras. O conhecimento de outras mentes é, assim, básico para todo o pensamento. Mas esse conhecimento exige e supõe o conhecimento de um mundo compartilhado de objetos em um espaço e tempo comuns. Assim, a aquisição do conhecimento não é baseada em uma progressão do subjetivo para o objetivo; ele emerge holisticamente e é interpessoal desde o começo. (shrink)

This paper is to propose a new form of Kant’s anti-skepticism argument in light of John McDowell’s works on disjunctivism. I first discuss recent debates between McDowell and Crispin Wright on disjunctivism. I argue that Wright wrongly downplays McDowell’s disjunctivism, whose metaphysical claim that our perceptual faculties directly engage in the world has an epistemological implication that should be able to dismiss the skeptic’s imagery as fictitious. However, McDowell does not clearly offer such an argument. I will show that we (...) can derive from Kant’s Fourth Paralogism of the first edition of the Critique of Pure Reason—which many scholars regard as Kant’s implicit commitment to phenomenalism—the requisite argument that makes us able to dismiss skepticism. (shrink)

: Radical meta-normative skepticism is the view that no standard, norm, or principle has objective authority or normative force. It does not deny that there are norms, standards of correctness, and principles of various kinds that render it possible that we succeed or fail in measuring up to their prerogatives. Rather, it denies that any norm has the status of commanding with objective authority, of giving rise to normative reasons to take seriously and follow its demands. Two powerful transcendental arguments (...) challenge this view. First, skepticism is said to be self-defeating: Settling what to accept, and in particular whether to accept skepticism, appears to be a reason-guided enterprise. How can skeptics coherently support their view by citing reasons in their favor after they just rejected them throughout? Second, there is the practical-deliberative version, most recently developed by David Enoch: We are essentially deliberative creatures. Yet deliberation appears to require that there are correct answers in the form of normative reasons to our practical questions. Thus confidence in the sensible nature of deliberation should inspire confidence in reasons. The essay undermines both transcendental arguments by demonstrating, first, how to support skepticism without deserting its tenets, and, second, how to deliberate in skeptical fashion. (shrink)

McDowell and Merleau-Ponty share a critical attitude towards a certain Cartesian picture of the mind. According to the picture in question nothing which properly belongs to subjectivity can be hidden to the subject herself. Nevertheless there is a striking asymmetry in how the two philosophers portray the problematic consequences of such a picture. They can seem to offer exact opposite views of these consequences, which, given the almost identical characterization of the transparency claim, is puzzling. I argue that a closer (...) look at the prima facie puzzling asymmetry dissolves the apparent disagreement and reveals a deeper agreement concerning both the nature and the origin of the problems haunting the Cartesian picture in question. Both McDowell and Merleau-Ponty argue that on the picture of the relation of between mind and world in question, we lose our grip on the very idea of a perceptual appearance. Furthermore, the two authors regard a certain conception of nature as conceived in the image of science, as one of the crucial elements in making the picture of the mind in question look attractive. (shrink)

The paper is devoted to an analysis of the epistemology of Johannes Volkelt, its main arguments and the relation of Volkelt's theory of certainty to Kant and other contemporary philosophers, such as Edmund Husserl. Volkelt's problem of scepticism is closely related to the positivist principle, which aimed at limiting all knowledge to our individual sphere of representations. This principle in Kant's Critique of Pure Reason means the unknowableness of the thing in itself. Volkelt seeks for answer to the question about (...) the trans-subjective knowledge. He finds a basis for the certainty in the dispresuppositional theory of the transsubjective minimum. The acceptance of the trans-subjective minimum determines too the possibility of metaphysics. (shrink)

We revisit an important exchange on the problem of radical skepticism between Richard Rorty and Michael Williams. In his contribution to this exchange, Rorty defended the kind of transcendental approach to radical skepticism that is offered by Donald Davidson, in contrast to Williams’s Wittgenstein-inspired view. It is argued that the key to evaluating this debate is to understand the particular conception of the radical skeptical problem that is offered in influential work by Barry Stroud, a conception of the skeptical problem (...) which generates metaepistemological ramifications for anti-skeptical theories. In particular, we argue that, contra Williams, Rorty’s view that Davidson was offering a theoretical diagnosis of radical skepticism can be consistently maintained with his transcendental approach. (shrink)

How should we understand the relationship between the contents of our color, causal, modal, and evaluative beliefs, on the one hand, and color, causal, modal, and evaluative properties, on the other? According to Barry Stroud (2011), because of the nature of the contents of those types of beliefs, we should also think that what he calls a “negative metaphysical verdict” on the latter is not one that we could consistently maintain. The metaphysical project aims to arrive at an improved conception (...) of ourselves and our relation the world, no matter if that conception is positive or negative. But if Stroud is right that we cannot consistently arrive at the view that all of our causal, modal, and evaluative beliefs are systematically false, we will see that we cannot consistently reach the negative verdict. But failure to reach the negative verdict doesn’t mean that we have reached the positive verdict. Stroud calls this philosophical failure “metaphysical dissatisfaction”. In this paper, I argue that we can appropriate a metaepistemological response to the problem of the external world which shares its core features with Stroud’s (2000, 2011) arguments, but which nevertheless leaves us with a distinctive kind of epistemological dissatisfaction. (shrink)

The Cartesian skeptic’s strategy is to tell a story about the world that is entirely consistent with all of the empirical evidence that we do, or can, have, but according to which many or all of our ordinary beliefs are false. He then suggests that, since we cannot show that his story is false, we ought to surrender those beliefs. In this paper I offer a decision-theoretic response to skepticism. Say that a cognitive attitude is a propositional attitude that may (...) be true or false. I argue that rejecting the skeptic’s story, and so retaining our ordinary opinions, will yield for us true cognitive attitudes, no matter whether the skeptic’s story is true or false, and that the best any alternative can do is yield no cognitive attitudes at all. Hence, it is rational to retain our ordinary opinions. One may be concerned that I can maintain this surprising conclusion because the cognitive attitudes at issue are not real beliefs, and do not represent the real world. I conclude the paper by arguing that this concern is misplaced. (shrink)

Kant's response to scepticism in the Critique of Pure Reason is complex and remarkably nuanced, although it is rarely recognized as such. In this paper, I argue that recent attempts to flesh out the details of this response by Paul Guyer and Michael Forster do not go far enough. Although they are right to draw a distinction between Humean and Pyrrhonian scepticism and locate Kant's response to the latter in the Transcendental Dialectic, their accounts fail to capture two important aspects (...) of this response. The first is that Kant's response to Pyrrhonian scepticism is also a response to Hume. The second is that aspects of this response are decidedly positive. In particular, I argue (1) that Kant believed Hume's scepticism manifested important elements of Pyrrhonian scepticism and (2) that both Pyrrhonian scepticism and Hume had a significant positive influence on the development of the Transcendental Dialectic. (shrink)

This critical study of Anthony Brueckner’s essay collection on skepticism emphasizes interconnections between the various essays. In particular, it considers Brueckner’s discussion of transcendental anti-skeptical arguments from the theses of anti-individualism and privileged self-knowledge. Finally, some overarching methodological lessons are drawn.

This paper analyzes the apraxia argument in Cicero’s Academica. It proposes that the argument assumes two modes: the evidential mode maintains that skepticism is false, while the pragmatic claims that it is disadvantageous. The paper then develops a tension between the two modes, and concludes by exploring some differences between ancient and contemporary skepticism.

Barry Stroud's work has had a profound impact on a very wide array of philosophical topics, but there has heretofore been no book-length treatment of his work. The current collection aims to redress this gap, with 13 essays on Stroud's work, all but one new to this volume.

Causal refutations of external-world scepticism start from our ability to make justified judgements about the order of our own experiences, and end with the claim that there must be perceptible external objects, some of whose states can be causally correlated with that order. In a recent paper, I made a series of objections to this broadly Kantian anti-sceptical strategy. Georges Dicker has provided substantive replies on behalf of a version of the causal refutation of idealism. Here I offer a few (...) final remarks about issues at the heart of our disagreement. -/- . (shrink)

Barry Stroud is well known as a critic of philosophers who purport to answer, or otherwise deflate, the threat of skepticism of the external world. He is most famous in this regard for his seminal paper on transcendental arguments, in which he argues that the prospects of defeating the skeptic with such arguments typically depend upon an implausible form of verification principle. There he mostly focuses upon Strawson and Shoemaker. But since then, Stroud has addressed strategies taken against skepticism as (...) varied as those proposed by Kant, Moore, Austin, Carnap, Quine, Cavell, Davidson, and Sosa, in each case meticulously articulating precisely why the strategy could not ultimately succeed. It is not surprising, then, that Stroud has come to be thought of as the quintessential skeptic. Epistemologists will be surprised to learn, then, that in several recent papers Stroud now argues that we face no threat of skepticism after all. If he who has been so carefully critical of enterprises that purport to answer, or otherwise deflate, the threat of skepticism has something now to say as to why we face no such threat at all, it is a proposal that comes with good pedigree and perhaps even a presumption in its favor. (shrink)

Transcendental arguments have been described as disclosing the necessary conditions of the possibility of phenomena as diverse as experience, self-knowledge and language. Although many theorists saw them as powerful means to combat varieties of skepticism, this optimism gradually waned as many such arguments turned out, on examination, to deliver much less than was originally thought. In this paper, I distinguish between two species of transcendental arguments claiming that they do not actually constitute distinct forms of reasoning by showing how they (...) collapse into more familiar inferences. I then turn to the question of their epistemic potentials which I argue to be a function of both their types as well as their targets. Finally, these claims are reinforced by uncovering links between certain recent claims about the efficacy of transcendental arguments and the so-called Moore’s paradox. (shrink)

This paper extends my prior analysis of Hegel’s solution to the Pyrrhonian Dilemma of the Criterion to moral philosophy. So doing provides a uniform account of rational justification in non-formal, substantive domains, i.e. empirical knowledge and morals. It argues that the Pyrrhonian Dilemma refutes both foundationalist and coherentist models of justification, and raises serious issues about the justificatory adequacy of contemporary forms of moral constructivism. It explicates and defends Kant’s account of the autonomy of reason as the self-critical regulation of (...) one’s own thought and judgment in view of relevant principles, standards, evidence and alternative analyses. It argues that Kant’s account of autonomy is defensible independently of transcendental idealism and of natural causality. Due to our fallibility and incomplete knowledge and understanding, our individual critical self-assessment requires the constructive mutual criticism of others. Hence maximally rational justification in non-formal, substantive domains is in part, ineliminably, a social and historical phenomenon. These aspects of rational justification are consistent with, and ultimately support, realism about the objects of empirical knowledge and strict objectivity about basic moral principles. One’s own maximally rational justification of non-formal, substantive claims or views accordingly requires recognition of one’s justificatory dependence upon the constructive criticism of others. This requires recognizing their capacities for critical assessment and rational justification. This is the most fundamental form of mutual recognition in Hegel’s analysis. It provides direct and powerful justification for Kant’s thesis that we ought and must respect all others as autonomous rational agents, as agents who can think and act on the basis of justifying reasons. This justification is independent of Kant’s account of ‘dignity’ or the incommensurable value of rational agency. (shrink)

The guiding questions of this volume are: Can we have knowledge of the external world of things outside our minds?

In the ‘Refutation of Idealism’ chapter of the first Critique, Kant argues that the conditions required for having certain kinds of mental episodes are sufficient to guarantee that there are ‘objects in space’ outside us. A perennially influential way of reading this compressed argument is as a kind of causal inference: in order for us to make justified judgements about the order of our inner states, those states must be caused by the successive states of objects in space outside us. (...) Here I consider the best recent versions of this reading, and argue that each suffers from apparently fatal flaws. -/- . (shrink)

Can we find propositions that cannot rationally be denied in any possible world without assuming the existence of that same proposition, and so involving ourselves in a contradiction? In other words, can we find transworld propositions needing no further foundation or justification? Basically, three differing positions can be imagined: firstly, a relativist position, according to which ultimately founded propositions are impossible; secondly, a meta-relativist position, according to which ultimately founded propositions are possible but unnecessary; and thirdly, an absolute position, according (...) to which such propositions are necessary. In this short essay I show that under the premise of modal logic S5 with constant domain there are ultimately founded propositions and that their existence is even necessary, and I will give some reasons for the superiority of S5 over other logics. (shrink)

Kant's writings on logic illustrate the comparison argument about truth, which goes as follows. A truth-bearer p is true if and only if it corresponds, or it agrees, with a portion of reality: the object(s), state(s) of affairs, or event(s) p is about. In order to know whether p agrees with that portion of reality, one must check if that portion of reality is as p states. Using the terms of the comparison argument, one must compare p with that portion (...) of reality. This is impossible, because the only knowledge of reality we can have is in the form propositions, beliefs, or judgments, whose agreement with reality is as much in need of justification as the agreement of p with reality. Therefore, it is impossible to know which truth-bearers are true. This paper reconstructs Kant's version of the comparison argument. It is argued that, according to Kant, the argument is sound only under the assumption of transcendental realism. Transcendental idealism avoids the sceptical consequences of the comparison argument. (shrink)

This book puts forward a much-needed reappraisal of Immanuel Kant's conception of and response to skepticism, as set forth principally in the Critique of Pure Reason. It is widely recognized that Kant's theoretical philosophy aims to answer skepticism and reform metaphysics--Michael Forster makes the controversial argument that those aims are closely linked. He distinguishes among three types of skepticism: "veil of perception" skepticism, which concerns the external world; Humean skepticism, which concerns the existence of a priori concepts and synthetic a (...) priori knowledge; and Pyrrhonian skepticism, which concerns the equal balance of opposing arguments. Forster overturns conventional views by showing how the first of these types was of little importance for Kant, but how the second and third held very special importance for him, namely because of their bearing on the fate of metaphysics. He argues that Kant undertook his reform of metaphysics primarily in order to render it defensible against these types of skepticism. Finally, in a critical appraisal of Kant's project, Forster argues that, despite its strengths, it ultimately fails, for reasons that carry interesting broader philosophical lessons. These reasons include inadequate self-reflection and an underestimation of the resources of Pyrrhonian skepticism. (shrink)

In this article, I am intent on rehabilitating Strawson's overall anti-sceptical strategy. First, I focus on his earlier attempt, which ignited the debate about the adequacy of transcendental arguments against the sceptic. I present Stroud's main reservation that Strawson's viewpoint is unworkable because it does not take into consideration the view of the external world upon which the sceptic is based in order to challenge our knowledge claims. I then focus on Strawson's later attempt, which is based upon a Humean-like (...) naturalistic strategy. I show that his naturalism is intractable for two reasons: first because it reproduces the proof structure of transcendental arguments and ends up employing a rational proof to counter rational proofs; and second, because it matches the sceptic's advice that we should live according to our natural inclinations without ever trying to justify our beliefs. In the last section, I claim that it is possible to rehabilitate transcendental arguments as sound anti-sceptical proofs if we argue for the senselessness of the idea of thing in itself completely apart from our powers of conceptualisation. (shrink)