This essay deals with a selected part of an epistemological controversy provided by Tūsī in response to the skeptical arguments reported by Rāzī that is related to what might be called "intellectual skepticism," or skepticism regarding the judgments of the intellect, particularly in connection with self-evident principles. It will be shown that Rāzī has cited and exposed a position that seems to be no less than a medieval version of empiricism. Tūsī, in contrast, has presented us with a position that (...) rejects such empiricism. The comparative aim of this essay is to draw attention to some similarities as well as some points of divergence between the kind of skeptical debate we are focusing on here, and some relevant epistemological discussions in the later traditions in the West. ". (shrink)

According to epistemic internalism, the only facts that determine the justificational status of a belief are facts about the subject’s own mental states, like beliefs and experiences. Externalists instead hold that certain external facts, such as facts about the world or the reliability of a belief-producing mechanism, affect a belief’s justificational status. Some internalists argue that considerations about evil demon victims and brains in vats provide excellent reason to reject externalism: because these subjects are placed in epistemically unfavorable settings, externalism (...) seems unable to account for the strong intuition that these subjects’ beliefs are nonetheless justified. I think these considerations do not at all help the internalist cause. I argue that by appealing to the anti-individualistic nature of perception, it can be shown that skeptical scenarios provide no reason to prefer internalism to externalism. (shrink)

In the text the author tries to investigate Wittgenstein’s notions of action, practice and pragmatism in his book On Certainty. An attempt is made to sketch the criterion of Wittgenstein’s analysis of certainty and to define the crucial concepts such as world-picture, practice, certainty and justification. The analysis shows that Wittgenstein applies a specific form of pragmatic solution to the problem of justification, which after all, can and should be called a kind of pragmatismus. This is the subject of the (...) first and the second part of the text. The third part shows the application of this pragmatic theory of justification to Wittgenstein’s refutation of scepticism. The author suggests that his pragmatic analysis of certainty presents an adequate means for the refutation of scepticism. However, his anti-scepticism is situated in the tradition of common sense and ordinary language philosophy and epistemology (Moore, Chisholm, Lehrer, Austin, Grice, Strawson, etc.). In the conclusion the author applies this anti-sceptical solution to the so called rule-following problem (as stated in Kripke’s work) and shows that there are some far reaching consequences of this interpretation of Wittgenstein’s later work to his position on language, learning, ontology and knowledge. (shrink)

Several authors have argued that, assuming we have apriori knowledge of our own thought-contents, semantic externalism implies that we can know apriori contingent facts about the empirical world. After presenting the argument, I shall respond by resisting the premise that an externalist can know apriori: If s/he has the concept water, then water exists. In particular, Boghossian's Dry Earth example suggests that such thought-experiments do not provide such apriori knowledge. Boghossian himself rejects the Dry Earth experiment, however, since it would (...) imply that externalism is true of empty concepts as well as non-empty concepts. Yet in this paper I respond by defending empty-concept externalism, from criticisms suggested by Boghossian and Brown, and recently developed further by Besson. My contention is that an externalist can give a non-ad hoc descriptivist account of empty concepts. Accordingly, apriori self-knowledge does not enable an externalist to know contingent features of the external world. (shrink)

Zhuangzi’s Butterfly Dream story can be read as a skeptical response to the Cartesian Cogito, ergo sum solution, for it presents I exist as fundamentally unprovable, on the grounds that the notion about “I” that it is guaranteed to refer to something existing, which Descartes seems to assume, is unwarranted. The modern anti-skepticism of Hilary Putnam employs a different strategy, which seeks to derive the existence of the world not from some “indubitable” truth such as the existence of myself , (...) but from the meaning of some particular assertion I make. In this paper, I argue, however, that Putnam’s argument fails to deliver on the promise of showing the self-refuting nature of the skeptical hypothesis, as it relies on a double use of “I”, a fallacy of equivocation, reflecting an unsolved tension between the argument’s general premise, which is rather Zhuangzian in spirit, and his unwitting adoption of that unwarranted notion about “I”. I try to show further that the skepticism in Zhuangzi’s Butterfly Dream not only can be used to refute the proofs of the existence of the empirical I , but also is effective against accounts concerning the existence of the transcendental I. (shrink)

The scales across which physical properties exist are vast and subtle in their effects on particular systems placed locally on such scales. For example, human experiential access is restricted only to partial segments of the mass density, size, and temperature scales of the universe. I argue that philosophers must learn to appreciate better the effects of physical scales. Specifically, thought experiments in philosophy should be more sensitive to physical scale effects, because the conclusion of a thought experiment may be undermined (...) by unintentionally ignored scale effects, and the changes required to obtain the foreground state of affairs in a thought experiment might require unacknowledged scale-spanning changes to the contextual background. I discuss four philosophical thought experiments: Putnam's Twin Earth and Brain in a Vat, Searle's Chinese Room, and Chalmers's Zombies Without Qualia. I close by briefly defending the greater interest and importance of physical possibility over logical possibility. (shrink)

There is a considerable effort in current theorizing about psychological phenomena to eliminate minds and selves as a vestige of folk theories. The pertinent strategies are quite varied and may focus on experience, cognition, interests, responsibility, behavior and the scientific explanation of these phenomena or what they purport to identify. The minimal function of the notion of self is to assign experience to a suitable entity and to fix such ascription in a possessive as well as a predicative way. It (...) is usually argued that Hume formulated an empiricist account of experience that obviated the need for reference to selves; and recent arguments mustered by Derek Parfit claim to show how to preserve experience, interest, responsibility usually assigned selves and persons without invoking any such entities. The argument here advanced demonstrates that Hume actually concedes the minimal use of the notion of self, that there appear to be no convincing grounds for eliminating it, that there are critical uses for the notion that render it ineliminable, that admission is neutral regarding the nature of selves, and that Parfit''s arguments in particular fail. There appear, therefore, to be no empiricist or materialist grounds for the eliminative move. A large recent literature that favors various eliminative strategies is canvassed and shown to be inadequate to its task and unlikely (for principled reasons) to be able to achieve its eliminative objective. (shrink)

Thought experiments involving The Matrix, brains-in-vats, or Cartesian demons have traditionally thought to describe skeptical possibilities. Chalmers has denied this, claiming that the simulations involved are real enough to at least sometimes defeat the skeptic. Through an examination of the meaning of kind terms in natural language I argue that, though the Chalmers view may be otherwise attractive, it is not an antidote to skepticism.

Realitism: the postmodern attack on reality -- Realism: things that have existed since the beginning of the world -- Reconstruction: why criticism starts from reality -- Emancipation: unexamined life has no value.

According to panpsychists, physical phenomena are, at bottom, nothing but experiential phenomena. One argument for this view proceeds from an alleged need for physical phenomena to have features beyond what physics attributes to them; another starts by arguing that consciousness is ubiquitous, and proposes an identification of physical and experiential phenomena as the best explanation of this alleged fact. The first argument assumes that physical phenomena have categorical natures, and the second that the world’s experience-causing powers or potentials underdetermine its (...) physical features. I argue that panpsychists are not entitled to these assumptions. (shrink)

‘Semantic externalism’ is the view that the thought and speech of internally identical subjects can have different contents, depending on facts about their environments. ‘Semantic internalism’ is the negation of this view. The details of these two views depend on the definition of ‘internal identity’. Katalin Farkas has shown that the traditional definition of internal identity as physical identity is too permissive: it misclassifies certain bodily states as internal. She has proposed defining internal identity as phenomenal identity instead. In the (...) critical part of my paper, I argue that Farkas’s proposal fails for being too restrictive: it misclassifies non-conscious mental states, most notably dispositional belief, as external. I consider two interpretations of Farkas’s proposal but conclude that neither succeeds, because each requires internal features to influence the subject’s phenomenal life in a way in which dispositional belief does not. In the constructive part of my paper, I consider dispositional identity as an alternative definition of internal identity. I argue that the dispositional-identity definition avoids the phenomenal-identity definition’s shortcoming and retains its main attraction, viz., that of securing the subjective indistinguishability that obtains between Twin Earth duplicates. My argument that it does the latter, however, faces potentially decisive obstacles. Thus, I retreat to a disjunctive proposal: internal identity should be defined either as dispositional identity or as dispositional-plus-phenomenal identity. I conclude by defending my proposal against a different charge that may be levelled against it, viz., that of misclassifying Cartesian dualism as an externalist theory of the mind. (shrink)

This paper introduces and defends the paradigm response to external world skepticism. To understand it, consider an analogy. One of the hallmarks of being a bird is an ability to fly. A penguin lacks this hallmark and thus fails to be a paradigm bird. Likewise, there are various hallmarks of knowledge. Some of your external world beliefs lack some of these hallmarks, and thus fail to be paradigm cases of knowledge. Just as the inability of penguins to fly doesn’t prevent (...) them from being birds, likewise the lack of these hallmarks doesn’t prevent your beliefs from being knowledge. It just prevents them from being paradigm cases thereof. (shrink)

Good physical experiments conform to the basic methodological standards of experimental design: they are objective, reliable, and valid. But is this also true of thought experiments? Especially problems of personal identity have engendered hypothetical scenarios that are very distant from the actual world. These imagined situations have been conspicuously ineffective at resolving conflicting intuitions and deciding between the different accounts of personal identity. Using prominent examples from the literature, I argue that this is due to many of these thought experiments (...) not adhering to the methodological standards that guide experimental design in nearly all other disciplines. I also show how empirically unwarranted background assumptions about human physiology render some of the hypothetical scenarios that are employed in the debate about personal identity highly misleading. (shrink)

Are computers on the way to acquiring “superintelligence”? Can human deliberation and decision-making be fully simulated by the mechanical execution of AI programmes? On close examination these expectations turn out not to be well-founded, since algorithms do, ultimately, have “heteronomous” characteristics. So-called AI-“autonomy” is a sensor-directed performance automatism, which — compared with the potential for ethical judgment in human “practical reason” — proves to be limited in significant ways. This is shown in some detail with reference to the idea of (...) a “digital humanism”, which was introduced by Julian Nida-Rümelin and Nathalie Weidenfeld, who argue that algorithms are useful “tools”, but emphasise — thus rejecting excessive “post-humanist” ideas about AI — that there exists a crucial difference between human action and its AI-simulation. While Nida-Rümelin/Weidenfeld´s “digital humanism” is, on the one hand, inspired by Kant’s conception of human autonomous self-determination, the concept of “structural rationality” that they advocate is, on the other hand, quite problematic. “Digital humanism”, however, can be improved as I argue — with reference to Barbara Herman’s analysis of “moral judgment” and to Allen Wood’s reflections on “human dignity”. (shrink)

The traditional Turing test appeals to an interrogator's judgement to determine whether or not their interlocutor is an intelligent agent. This paper argues that this kind of asymmetric experimental set-up is inappropriate for tracking a property such as intelligence because intelligence is grounded in part by symmetric relations of recognition between agents. In place, it proposes a reciprocal test which takes into account the judgments of both interrogators and competitors to determine if an agent is intelligent. This form of social (...) interaction better tracks both the evolution of natural intelligence and how the concept of intelligence is actually used within our society. This new test is defended against the criticisms that a proof of intelligence requires a demonstration of self-consciousness and that semantic externalism entails that a non-embodied Turing test is inadequate. (shrink)

This paper examines three cases of the clash between science and philosophy: Zeno’s paradoxes, the Frame Problem, and a recent attempt to experimentally refute skepticism. In all three cases, the relevant science claims to have resolved the purported problem. The sciences, construing the term broadly, are mathematics, artificial intelligence, and psychology. The goal of this paper is to show that none of the three scientific solutions work. The three philosophical problems remain as vibrant as ever in the face of robust (...) scientific attempts to dispel them. The paper concludes by examining some consequences of this persistence. (shrink)

In this essay I try to give some overall statements in order to show that new realism is to be understood as a kind of positive philosophy. Against constructivism, I argue that there is a prevalence of the objects themselves on our understanding of them because reality offers a resistance to our attempt to grasp it depending on its level of dependence from our own understanding, which is different in the case of natural objects, ideal object and social object. This (...) negativity leads to an ontological necessity of facticity. In the second part of this paper I will describe – through the exposition of three key concepts of new realism, i.e. “unamendability”, “interaction” and “affordance” – an ascending path for which the negative and the resistance turn into positivity. (shrink)

_ Source: _Volume 8, Issue 3, pp 198 - 207 The paper discusses and presents an alternative interpretation to Penelope Maddy’s reading of G.E. Moore’s and Ludwig Wittgenstein’s anti-skeptical strategies as proposed in her book _What Do Philosophers Do? Skepticism and the Practice of Philosophy_. It connects this discussion with the methodological claims Maddy puts forward and offers an alternative to her therapeutic reading of Wittgenstein’s _On Certainty_.

_ 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)

In this paper, I discuss the relationship between bodily experiences in dreams and the sleeping, physical body. I question the popular view that dreaming is a naturally and frequently occurring real-world example of cranial envatment. This view states that dreams are functionally disembodied states: in a majority of dreams, phenomenal experience, including the phenomenology of embodied selfhood, unfolds completely independently of external and peripheral stimuli and outward movement. I advance an alternative and more empirically plausible view of dreams as weakly (...) phenomenally-functionally embodied states. The view predicts that bodily experiences in dreams can be placed on a continuum with bodily illusions in wakefulness. It also acknowledges that there is a high degree of variation across dreams and different sleep stages in the degree of causal coupling between dream imagery, sensory input, and outward motor activity. Furthermore, I use the example of movement sensations in dreams and their relation to outward muscular activity to develop a predictive processing account. I propose that movement sensations in dreams are associated with a basic and developmentally early kind of bodily self-sampling. This account, which affords a central role to active inference, can then be broadened to explain other aspects of self- and world-simulation in dreams. Dreams are world-simulations centered on the self, and important aspects of both self- and world-simulation in dreams are closely linked to bodily self-sampling, including muscular activity, illusory own-body perception, and vestibular orienting in sleep. This is consistent with cognitive accounts of dream generation, in which long-term beliefs and expectations, as well as waking concerns and memories play an important role. What I add to this picture is an emphasis on the real-body basis of dream imagery. This offers a novel perspective on the formation of dream imagery and suggests new lines of research. (shrink)

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.

I extend my direct virtue epistemology to explain how a knowledge-first framework can account for two kinds of positive epistemic standing, one tracked by externalists, who claim that the virtuous duplicate lacks justification, the other tracked by internalists, who claim that the virtuous duplicate has justification, and moreover that such justification is not enjoyed by the vicious duplicate. It also explains what these kinds of epistemic standing have to do with each other. I argue that all justified beliefs are good (...) candidates for knowledge, and are such because they are exercises of competences to know. However, there are two importantly different senses in which a belief may be a good candidate for knowledge, one corresponding to an externalist kind of justification and the other corresponding to an internalist one. I show how the account solves the new evil demon problem in a more satisfactory way than existing accounts. We end up with a view of knowledge, justification, and rationality that is plausible, motivated, and theoretically unified. (shrink)

ABSTRACT: René Descartes' Cogito is an example of a paradigmatic thought experiment, herald of both subjectivism and new science in Europe's Modern Age, that seems to have escaped the attention of thought experiment philosophers. On deep analysis, the Cogito appears as universal instantiation. The Cogito has strong rhetorical effects for it narratively generalizes from I to all human kind, and its historical and philosophical success can be explained from its concise enthymematic structure that rings true in many possible senses. We (...) consider it a preeminent example of a thought experiment as it states the power of thinking as its very contents. From Descartes' methodology of doubt we can conclude that, e.g., on a Wittgensteinian interpretation, the Cogito is a logical thought experiment rather than a psychological one. RESUMO: O Cogito de René Descartes é um exemplo de experimento mental paradigmático, precursor tanto do subjetivismo quanto da nova ciência, na Idade Moderna europeia, o qual parece ter escapado à atenção dos filósofos que estudaram o experimento mental. Na análise profunda, o Cogito aparece como uma instanciação universal. O Cogito tem fortes efeitos retóricos por si mesmo, generalizando narrativamente desde o eu para toda a espécie humana, e seu sucesso histórico e filosófico pode ser explicado por sua estrutura entimemática concisa, que soa através de muitos sentidos possíveis. Consideramos que é um exemplo proeminente de um experimento mental, na medida em que afirma o poder de pensar como seus próprios conteúdos. A partir da metodologia da dúvida de Descartes, podemos concluir que, em uma interpretação wittgensteiniana, o Cogito é um experimento mental mais lógico que psicológico. (shrink)

This is an extended intellectual obituary for Hilary Putnam.

An interesting fact about the meaning of words is the compulsion to perceive them; when we encounter a symbol, we perceive its meaning without the least mental effort. In this paper, I answer the questions, "How does the meaning of a word impose itself on us?" and "How does a symbol become meaningful and what is the meaning of a symbol?" By emphasizing the time when we understand a word, I introduce the reality of words versus the language convention. By (...) distinguishing between giving meaning to words and their having a meaning, I show how, just like a reality, a word has a function appropriate to its unique character. We replace an independent entity called "meaning" with this function of understanding. Eventually, by distinguishing between the language act and the speaker's act, I show that the creative aspect of language is related to the layer of the language act rather than the speaker's act. (shrink)

Skeptical hypotheses such as the brain-in-a-vat hypothesis provide extremely poor explanations for our sensory experiences. Because these scenarios accommodate virtually any possible set of evidence, the probability of any given set of evidence on the skeptical scenario is near zero; hence, on Bayesian grounds, the scenario is not well supported by the evidence. By contrast, serious theories make reasonably specific predictions about the evidence and are then well supported when these predictions are satisfied.

Timothy Williamson’s Knowledge and its Limits has been highly influential since the beginning of this century. It can be read as a systematic response to scepticism. One of the most important notions in this response is the notion of «evidence,» which will be the focus of the present paper. I attempt to show primarily two things. First, the notion of evidence invoked by Williamson does not address the sceptical worry: he stipulates an objective notion of evidence, but this begs the (...) question against his opponent. Second, his related thesis «Evidence equals Knowledge» does not sit well with his own content externalism: he promises to relate epistemology to philosophy of mind, but he fails to live up to this commitment in his crucial chapter on scepticism. Other minor problems concerning evidence will also be discussed in due course. (shrink)

The aim of this paper is to discuss a basic assumption tacitly shared by many philosophers of mind and language: that whatever can be meant, can be said. It specifically targets John Searle's account of this idea, focusing on his Principle of Expressibility . In the first part of the paper, PE is exposed underlining its analyticity and its relevance for the philosophy of language , mind , society and action . In the critical part, the notion of Background is (...) taken into account in order to re-evaluate two basic distinctions: the one between sentence and utterance meanings , and the one between native and type speakers . PE is reconsidered in the light of the previous arguments as a methodological strategy that does not prevent uses of language from eventual semantic excesses and deficits , and a complementary Principle of Expression Fallibility is finally proposed. (shrink)

The paper begins by examining the original Turing Test (2T) and Searle’s antithetical Chinese Room Argument, which is intended to refute the 2T in particular, as well as any formal or abstract procedural theory of the mind in general. In the ensuing dispute between Searle and his own critics, I argue that Searle’s ‘internalist’ strategy is unable to deflect Dennett’s combined robotic-systems reply and the allied Total Turing Test (3T). Many would hold that the 3T marks the culmination of the (...) dialectic and, in principle, constitutes a fully adequate empirical standard for judging that an artifact is intelligent on a par with human beings. However, the paper carries the debate forward by arguing that the sociolinguistic factors highlighted in externalist views in the philosophy of language indicate the need for a fundamental shift in perspective in a Truly Total Turing Test (4T). It’s not enough to focus on Dennett’s individual robot viewed as a system; instead, we need to focus on an ongoing system of such artifacts. Hence a 4T should evaluate the general category of cognitive organization under investigation, rather than the performance of single specimens. From this comprehensive standpoint, the question is not whether an individual instance could simulate intelligent behavior within the context of a pre-existing sociolinguistic culture developed by the human cognitive type. Instead the key issue is whether the artificial cognitive type itself is capable of producing a comparable sociolinguistic medium. (shrink)

In her book, The Dilemma of Freedom and Foreknowledge, Linda Zagzebski suggests that among the strongest ways of supporting the thesis that libertarian free will is incompatible with divine foreknowledge is what she refers to as the Accidental Necessity argument. Zagzebski contends, however, that at least three satisfactory responses to that argument are available.I argue that two of the proposed solutions are open to strong objections, and that the third, although it may very well handle the specific versions of the (...) Accidental Necessity argument that Zagzebski considers, fails when confronted with a stronger version of the Accidental Necessity line of argument. (shrink)

What has the self to be like such that introspective awareness of it is possible? The paper asks if Descartes’s idea of an inner self can be upheld and discusses this issue by invoking two principles: the phenomenal transparency of experience and the semantic compositionality of conceptual content. It is assumed that self-awareness is a second-order state either in the domain of experience or in the domain of thought. In the former case self-awareness turns out empty if experience is transparent. (...) In the latter, it can best be conceived of as a form of mental quotation. Various proposed analyses of direct and indirect quotation are discussed and tested regarding their applicability to thought. It is concluded that, on the assumption of compositionality, the inner self is only insofar accessible to awareness as it has an accessible phonological structure, as apparently only inner speech does. (shrink)

The raison d’être of this article is that many a spry-eyed analyst of the works in intelligent computing and robotics fail to see the essential concerning applications development, that of expressing their ultimate goal. Alternatively, they fail to state it suitably for the lesser-informed public eye. The author does not claim to be able to remedy this. Instead, the visionary investigation offered couples learning and computing with other related fields as part of a larger spectre to fully simulate people in (...) their embodied image. For the first time, the social roles attributed to the technical objects produced are questioned, and so with a humorous illustration. (shrink)

Images share a common feature with all phenomena of imagination, since they make us aware of what is not present or what is fictional and not existent at all. From this perspective, the philosophical approach of Kendall Lewis Walton—born in 1939 and active since the 1960s at the University of Michigan—is perhaps one of the most notable contributions to image theory. Walton is an authoritative figure within the tradition of analytical aesthetics. His contributions have had a considerable influence on a (...) broad range of topics, such as the role of categories in the understanding of the arts (Walton, “Categories of Art”. Philosophical Review, 79(3): 334–367, 1970), the ambiguous nature of emotions in the experience of fictional stories (Walton, “Fearing Fictions”. The Journal of Philosophy, 75(1): 5–25, 1978), the transparency of photographic images compared to other depictions (Walton, “Transparent Pictures: On the Nature of Photographic Realism”. Noûs, 18(1): 67–72, 1984) and, above all, the development of a general theory of fiction as imaginative activity. His 1990 book Mimesis as Make-believe: On the Foundations of the Representational Arts collects and re-elaborates articles Walton published on the subject since the 1970s. Though he does not attempt to give a definitive answer for what imagination is, Walton thoroughly investigates its role in all cases of representational works, describing depictions as a specific case of “make-believe” activity: images, in short, are specific props of a visual and perceptual “make-believe” game. (shrink)

When does a human being cease to exist? For millennia, the answer to this question had remained largely unchanged: death had been diagnosed when heartbeat and breathing were permanently absent. Only comparatively recently, in the 1950s, rapid developments in intensive-care medicine called into question this widely accepted criterion. What had previously been deemed a permanent cessation of vital functions suddenly became reversible. -/- A new criterion of death was needed. It was suggested that the destruction of the brain could indicate (...) the death of the organism in the presence of external life support. Soon the so-called brain death became the new worldwide standard. In recent years, however, doubts about this neurological criterion have been growing. Is brain death really our death? -/- This is the question that this thesis seeks to answer. To this end, we shall connect the medical debate about the definition of death to the philosophical debate about personal identity. While we will find that the destruction of its brain does in fact not correspond to an organism’s death, we shall also ask whether the assumption that we are essentially organisms is correct. May brain death be the ceasing to exist of a different entity? -/- Substituting clinical case reports and considerations about human physiology for the use of thought experiments, the thesis takes a novel and philosophically unconventional approach to the problem of what we essentially are. We shall analyse various pathological conditions and their respective effects on the bodily and mental characteristics of our existence. We will conclude that brain death is indeed our death – but for reasons entirely different from those cited in the original justification of this criterion. (shrink)

El objetivo de este artículo es proporcionar elementos para una comprensión apropiada de las diversas dialécticas entre escepticismo y antiescepticismo en epistemología. En particular, demostrar que cierta tesis escéptica es falsa o que es imposible defenderla coherentemente puede resultar insuficiente para solucionar el problema conceptual derivado de un determinado argumento escéptico a favor de dicha tesis. Incluyo una discusión sobre la fuerza y los límites de los argumentos trascendentales, así como un análisis de su estructura, ilustrado por el argumento de (...) Putnam contra la posibilidad epistémica de ser un cerebro en una cubeta. (shrink)

Alik Pelman proposes a sceptical challenge to the widely accepted thesis that theoretical identities are necessary. His argument relies on the possibility of the manifest criterion of identity. In this article, we argue that given the necessity of the obtaining of the identity criterion, Pelman’s sceptical argument against the necessity of theoretical identities cannot be effective. By comparing Pelman’s sceptical argument with classical sceptical arguments, it is demonstrated that there is a sense in which classical arguments are effective but not (...) Pelman’s. (shrink)

In this dissertation I consider the problem of external world skepticism and attempts at providing an argument to the best explanation against it. In chapter one I consider several different ways of formulating the crucial skeptical argument, settling on an argument that centers on the question of whether we're justified in believing propositions about the external world. I then consider and reject several options for getting around this issue which I take to be inadequate. I finally conclude that the best (...) option available to us at the moment is to argue that the antiskeptical view is the best explanation of our ordinary experiences In chapter two I argue that, if we hope to ground what counts as defending antiskepticism in common sense, there is an argument against the possibility of ever knowing one has succeeded in defending antiskepticism. After showing that common sense is no place to look in setting a goal for our antiskeptical project, I present the view that what will be crucial to settling on our antiskeptical goal is coming to a successful analysis of the nature of physical objects. I suggest some minimal criteria that must be met by a view in order to be antiskeptical based on our intuitions about core skeptical cases, but acknowledge that a fully successful response to external world skepticism will require the antiskeptic to engage in some much more difficult analysis. In chapter three I consider various views of the nature of explanation and conclude, tentatively, that explanation as it interests the antiskeptic is fundamentally causal. In chapter four I consider and reject some of the core views on which best explanation facts are so fundamental that a project of attempting to vindicate probabilistically the virtues which make explanations epistemically good. In this chapter I show that views which analyze justification in terms of best explanation factors fail. In chapter five I attempt to vindicate the various explanatory virtues probabilistically. In doing so I attempt to express or translate the various explanatory virtues in terms of probabilities in order to show that having those virtues makes a view at least prima facie more probable. In chapters six and seven I explain and evaluate the various arguments to the best explanation against skepticism present in current philosophical literature. I attempt to show that extant arguments fail to appreciate the virtues possessed by classical skeptical scenarios. In chapter eight I briefly consider some options that may be open to the antiskeptic moving forward. All routes forward contain considerable obstacles, but there are some fruitful areas of research to pursue. (shrink)

(No abstract is available for this citation).

How does the modern scientific conception of time constrain the project of assigning the mind its proper place in nature? On the scientific conception, it makes no sense to speak of the duration of a pain, or the simultaneity of sensations occurring in different parts of the brain. Such considerations led Henri Poincaré, one of the founders of the modern conception, to conclude that consciousness does not exist in spacetime, but serves as the basic material out of which we must (...) create the physical world. The central claim of Sensorama is that Poincaré was substantially correct. The best way to reconcile the scientific conception of time with the evidence of introspection is through a phenomenalist metaphysic according to which consciousness exists in neither time nor space, but serves as a basis for the logical construction of spacetime and its contents. (shrink)

For beings like us, no ontological argument can possibly succeed. They are doomed to fail. The point of an ontological argument is to enable nonempirical knowledge of its conclusion, namely, that God exists. But no ontological argument could possibly enable us to know its conclusion nonempirically, and so must fail in that sense.

Ordinary knowledge claims are challenged by philosophical scepticism which holds that we are unable to exclude the possibilities of error involved in well-known sceptical alternatives . In order to explain how we can resist this challenge, first I compare philosophical and ordinary doubt. I point out that they do not differ in terms of the way they aim to undermine knowledge claims, but rather in the character of the alternatives to which they appeal. Thus, in ordinary contexts, philosophical sceptical alternatives (...) should not be considered relevant because they are farfetched, not supported by any indication that they really might exist in the given circumstances. Since this point concerns the assertability rather than the truth of our knowledge claims, I further argue that while our evidential basis for their assertability is internal, their truth depends upon certain assumptions concerning the causal history of our beliefs, reliability of our cognitive abilities, success in identifying and excluding relevant alternatives, etc. In everyday knowledge attributions, these assumptions operate as externalist preconditions so that we may know something only if they are correct even without knowing that they are correct. Finally, I point out an implicit predictive dimension of our knowledge claims consistent with their fallibility: when we properly claim to know something, we do not imply impossibility of being mistaken, but rather hold that we are not wrong and that no sudden twist of future events will show us to be wrong.Filozofski skepticizam dovodi u pitanje naše svakodnevne tvrdnje da nešto znamo ističući da nismo u stanju isključiti mogućnosti pogreške sadržane u dobro poznatim skeptičkim alternativama . Da bih objasnio kako se možemo oduprijeti tome skeptičkom izazovu, najprije uspoređujem filozofsku i svakodnevnu sumnju. Ukazujem na to da se one ne razlikuju s obzirom na način na koji nastoje potkopati tvrdnje da nešto znamo, nego u obilježjima alternativa na koje se pozivaju. U svakodnevnim kontekstima filozofsko-skeptičke alternative ne bi ni trebalo smatrati relevantnima, budući da su sasvim uopćene i nisu poduprte nikakvom naznakom da bi u danim okolnostima uistinu mogle biti aktualizirane. Budući da se ta činjenica ne tiče istinitosti, nego tvrdljivosti naših spoznajnih tvrdnji, pokazujem da dok je naša evidencijska osnova za njihovu tvrdljivost internalistička, njihova istinitost ovisi o određenim pretpostavkama koje se tiču uzročne povijesti naših vjerovanja, pouzdanosti naših spoznajnih sposobnosti, uspjeha u identificiranju i isključivanju relevantnih alternativa itd. U svakodnevnim pripisivanjima znanja te pretpostavke funkcioniraju kao eksternalistički preduvjeti, tako da nešto možemo znati samo ako su one točne a da pritom čak i ne moramo znati jesu li točne. Naposljetku, ističem implicitnu prediktivnu dimenziju naših spoznajnih tvrdnji koja je konsistentna s njihovom pogrešivošću: kada s pravom tvrdimo da nešto znamo, tada ne impliciramo nemogućnost da smo pogriješili, nego smatramo da nismo u krivu i da nikakvi neočekivani budući događaji neće pokazati da smo u krivu. (shrink)

The scandal to philosophy and human reason, wrote Kant, is that we must take the existence of material objects on mere faith . In contrast, the skeptical paradox that has scandalized recent philosophy is not formulated in terms of faith, but rather in terms of justification, warrant, and entitlement. I argue that most contemporary approaches to the paradox (both dogmatist/liberal and default/conservative) do not address the traditional problem that scandalized Kant, and that the status of having a warrant (or justification) (...) that is derived from entitlement is irrelevant to whether we take our beliefs on mere faith. For, one can have the sort of warrant that most contemporary anti-skeptics posit while still taking one’s belief on mere faith. An alternative approach to the traditional problem is sketched, one that still makes use of contemporary insights about “entitlement.”. (shrink)

Barnes-Holmes characterizes his views as a-ontological, not antirealist. My criticisms still apply. Barnes-Holmes has not given any good reason to accept antirealism, nor has he given any good reason to accept an a-ontological position. Because his views, a-ontological or otherwise, are contradicted by ubiquitous aspects of the theory and practice of behavior analysis, these views should be rejected until supported by new and better arguments.

Philosophical skepticism about the external world seeks to call into question our knowledge of the external world. Some kinds of philosophical skepticism employ skeptical hypotheses to prove that we cannot know anything about the external world. Putnam tried to refute this kind of skepticism by adopting semantic externalism; but, as is now generally accepted, Putnam’s argument is epistemically circular. Brueckner proposes some new, “simple” arguments that in his view are not circular. In this paper we evaluate Brueckner’s simple arguments for (...) refuting skepticism about the external world, and seek to demonstrate that they fail to prove that we can have knowledge about the external world. However, by appeal to the principle of privileged access, one of the Brueckner’s arguments does indeed succeed in showing that we can have justified beliefs about the external world. (shrink)

Como posso estar certo de que existe qualquer coisa de externa aos meus próprios pensamentos? Muitos filósofos procuraram ou apresentar uma prova da existência do mundo externo, ou rejeitar a inteligibilidade da própria ideia de uma “prova” nesse contexto. O objetivo desse artigo é mostrar que o denominado “problema do mundo externo” decorre de uma má compreensão acerca do que seja justificativa epistêmica. Apresento o que denomino “paradoxo de Berkeley” de modo a mostrar que o uso ordinário da linguagem não (...) deve funcionar como critério de correção para a aplicação de conceitos como conhecimento e existência. Concluo que tanto as tentativas tradicionais de se apresentar uma prova da existência do mundo externo quanto as tentativas de se mostrar que o problema não faz sentido são equivocadas. O que deve ser levado em conta no exame do problema do mundo externo é o contexto em que a proposta cética é feita. (shrink)