This paper critically evaluates an objection to introspective arguments for human freedom found within Spinoza's Ethics. The objection-- which we call Spinoza's dream argument -- challenges the evidentiary value of a person's experience of her own freedom by pointing out that some choices made within dreams are experienced as no less free than choices made while awake despite the fact that choices made within dreams are not free. After reconstructing Spinoza's dream argument, we critically evaluate it, (...) concluding ultimately that it fails in two respects. First, we draw upon the results of an experiment we conducted that suggests that dreamt choices are not experienced as free to the same extent as choices made while awake. Second, we argue that there is no compelling justification for the claim that choices made within dreams are not free. (shrink)

According to one fairly standard reconstruction Descartes' Dream Argument has two crucial premises. The paper starts by analysing two important failed attempts, discussed by Barry Stroud and Mark Steiner, at justifying one of these premises. On this basis then an alternative is suggested to the line of interpretation assumed by these attempts which easily resolves the problems they face. It is shown that this alternative and its rivals are on a par with respect to the other crucial premise (...) of the Dream Argument and that it is superior to the others in avoiding scepticism or infinite regress. (shrink)

In his recent work, The Significance of Philosophical Scepticism, Barry Stroud proposes to carry out an in-depth critique of the attempt by philosophers to invalidate all knowledge of an external world on the basis of Descartes' dream argument. His more particular aims in this endeavour are to uncover significant features of any such scepticism and to disclose in the process fundamental aspects of ‘human knowledge’ itself. Thus, among other features of knowledge that his study discloses, he thinks, is, (...) echoing Kant, the idea ‘that a completely general distinction between everything we get through the senses, on the one hand, and what is true or not true of the external world, on the other, would cut us off forever from knowledge of the world around us.’ And a significant feature of Cartesian dream scepticism he believes to have uncovered is that its ‘effectiveness’ rests upon the philosopher's traditional assumption of an objectively existent world that is understandable ‘from a detached “external” viewpoint.’. (shrink)

According to one fairly standard reconstruction Descartes' Dream Argument has two crucial premises. The paper starts by analysing two important failed attempts, discussed by Barry Stroud and Mark Steiner, at justifying one of these premises. On this basis then an alternative is suggested to the line of interpretation assumed by these attempts which easily resolves the problems they face. It is shown that this alternative and its rivals are on a par with respect to the other crucial premise (...) of the Dream Argument and that it is superior to the others in avoiding scepticism or infinite regress. (shrink)

In this paper, I argue that dreaming arguments are no cause for alarm.

Ernest Sosa has proposed at least three responses to the dream argument for skepticism in his writings in the past decade. The first and the main purpose of this paper is to critically examine the three Sosaian responses, as well as a Wittgensteinian response Sosa would endorse, by investigating whether they can refute the six different versions of the dream argument found in a passage in the Zhuangzi. The second purpose of this paper is exactly to (...) offer an exposition of the passage in the Zhuangzi so as to show that there were already sophisticated versions of the dream argument in ancient China. The main results of the critical examination are as follows. For four of the six versions of the dream argument found in the Zhuangzi, each of them can be refuted by either the Wittgensteinian response or one of the three Sosaian responses. With respect to the remaining two versions of the dream argument, one of them can be refuted partially by two of Sosa’s responses. First, that version of the dream argument can be refuted by one of Sosa’s responses, provided the imagination model of dreaming is adopted. Second, it can also be refuted by another of Sosa’s responses without assuming the imagination model of dreaming, though both the view that there is unsafe knowledge and a certain externalist reliabilism need to be adopted. However, another of the two remaining versions of the dream argument cannot be refuted by any of the Sosaian responses, nor the Wittgensteinian response. This shows that the three Sosaian responses and the Wittgensteinian response cannot refute significantly many different versions of the dream argument. Sosa’s responses, including the Wittgensteinian response, therefore are not in general successful in the refutation of he dream argument for skepticism. (shrink)

Explore's al-Ghazāli's skeptical methodology in Deliverance from Error.

1. Introduction. Can Berkeleian idealism draw any support from the following argument?

This paper appeals to the phenomenon of dreaming to provide a novel defense against arguments from evil. The thrust of the argument is as follows: when we wake up after a nightmare we are often filled entirely with relief, and do not consider ourselves to have actually suffered very much at all; and since it is epistemically possible that this whole life is simply a dream, it follows that it is epistemically possible that in reality there is very (...) little suffering. This epistemic possibility decisively undermines a key premise of both logical and evidential arguments from evil. (shrink)

The dream argument and its role in Cartesian doubt continue to engage commentators. As recent scholarship shows, a consensus has yet to be attained. In what follows I attempt to resolve the current debate by offering an account of the dream doubt which captures Descartes’s rhetorical strategy in Meditation I. A faithful reading of the text, I propose to show, reveals that the dream doubt is not entertained seriously nor is it proposed merely for the sake (...) of methodological skepticism. It is rather an integral part of a dogmatic intrusion of Cartesian science at a pivotal point in the critique of prescientific experience. After presenting the proposed interpretation, I examine the accounts offered in the current scholarship. (shrink)

Putnam’s semantic argument against the BIV hypothesis and Sosa’s argument against dream skepticism based on the imagination model of dreaming share some important structural features. In both cases the skeptical option is supposed to be excluded because preconditions of its intelligibility are not fulfilled (affirmation and belief in the dream scenario, thought and reference in the BIV scenario). Putnam’s reasoning is usually interpreted differently, as a classic case of deception, but this feature is not essential. I (...) propose to interpret BIV’s utterances as cases of reference failure best captured by truth-value gaps. Both anti-skeptical strategies are then vulnerable to the same type of objections (how do we know what state we are in or how do we know what kind of language do we speak). (shrink)

When we dream, we feel emotions in response to objects and events that exist only in the dream. One key question is whether these emotions can be said to be “essentially unfitting”, that is, always inappropriate to the evoking scenario. However, how we evaluate dream emotions for fittingness may depend on the model of dreams we adopt: the imagination or the hallucination model. If fittingness requires a match between emotion and evaluative properties of objects or events, it (...) is prima facie plausible that dream emotions could fail to fit under the imagination model because it is unfitting to have an emotion toward an object we do not believe to be real. Under the hallucination model, dream emotions could be unfitting because their objects do not exist but we believe them to be real. More nuance, however, is required. By comparing dream emotions with the emotions we experience while imagining, engaging with fiction, and hallucinating, we conclude that although there are compelling arguments in support of the claim that dream emotions are essentially unfitting, these arguments are not entirely convincing, and it is more plausible that particular dream emotions can be assessed for fittingness under either model of dreaming. (shrink)

In this article, I offer a detailed examination of Margaret Macdonald's response to the Cartesian sceptical argument from dreaming. I show that Macdonald's views were not well understood by her contemporaries, and I suggest that this misunderstanding has led to her omission from subsequent discussions of this subject. I end with a brief demonstration of the fact that Macdonald's central claims have re-emerged in contemporary epistemology.

A common objection to Sosa’s epistemology is that it countenances, in an objectionable way, unsafe knowledge. This objection, under closer inspection, turns out to be in far worse shape than Sosa’s critics have realised. Sosa and his defenders have offered two central response types to the idea that allowing unsafe knowledge is problematic: one response type adverts to the animal/reflective knowledge distinction that is characteristic of bi-level virtue epistemology. The other less-discussed response type appeals to the threat of dream (...) scepticism, and in particular, to the idea that many of our everyday perceptual beliefs are unsafe through the nearness of the dream possibility. The latter dreaming response to the safety objection to Sosa’s virtue epistemology has largely flown under the radar in contemporary discussions of safety and knowledge. We think that, suitably articulated in view of research in the philosophy and science of dreaming, it has much more going for it than has been appreciated. This paper further develops, beyond what Sosa does himself, the dreaming argument in response to those who think safety (as traditionally understood) is a condition on knowledge and who object to Sosa’s account on the grounds that it fails this condition. The payoffs of further developing this argument will be not only a better understanding of the importance of insights about dreaming against safety as a condition on knowledge, but also some reason to think a weaker safety condition, one that is relativised to SSS (i.e., skill/shape/situation) conditions for competence exercise, gets better results all things considered as an anti-luck codicil on knowledge. (shrink)

The phenomenal character of dreaming has long been a matter of philosophical debates. Most of the time, dreaming is either likened to perception or likened to imagination, in order to decide whether it gets closer to normal or abnormal states of consciousness. This line of debates extends from the traditional dream argument to the contemporary movement of phenomenology. This article presents what specific contributions phenomenology has made to the millennial investigations of dreaming. Its structure is twofold. Firstly, we (...) introduce how pioneering phenomenologists, including Edmund Husserl, Jan Patočka, Jean-Paul Sartre, Eugen Fink, and Jean Héring, analyse the lived characters of dreaming respectively. Secondly, we show that those pioneering phenomenologists, by engaging with the traditional dream argument, have laid out the worldliness of dreams as a crucial criterion for deciding how similar dreams and reality can be. (shrink)

In the interpretations of Zhuangzi, there are four levels to the relationship between dreaming and awakening: awakening is more realistic than dreaming, dreaming is more realistic than awakening, dreaming and awakening are equal, and there is no distinction between dreaming and awakening. From the view of the Chongxuan (重玄) School, 1. insisting that awakening is more realistic and cherishing life is attached to substantiality as a psychological intention to seek out a specific object; 2. insisting that dreaming is more realistic (...) is attached to nihility as a cynical intention of desirelessness; 3. non-attachment to the distinction between dreaming and awakening as a false objectification of the mid-way (madhyamā-pratipad) is a first-order non-attachment and a new kind of self-deception to form a hidden meta-desire to transcend the two kinds of desires above; and 4. Chongxuan, as a second-order non-attachment of non-attachment, allows people to forget the distinction between dreaming and awakening. This topic has also been reflected upon or reinterpreted by ancient and modern philosophers and has a continuous impact on social reform in modern China. (shrink)

In her book "descartes", Margaret wilson proposes a new interpretation of the dreaming argument. According to this interpretation, Descartes does not reach his conclusion via a subconclusion that I cannot be certain that I am not dreaming (as was claimed by more traditional authors such as moore, Malcolm, Frankfurt, And walsh), But rather directly, By pointing out that I cannot be certain that waking experience is veridical. The present article examines the arguments supporting wilson's interpretation, And finds them to (...) be faulty. Thus the article's conclusions clearly favor the traditional interpretations mentioned above. (shrink)

This paper compares the relative merits of perceptual beliefs and introspective beliefs in the context of dream arguments for skepticism. It is argued that introspective beliefs are not epistemically privileged over perceptual beliefs.

Big dreams are rare but highly memorable dream experiences that make a strong and lasting impact on the dreamer's waking awareness. Moving far beyond "I forgot to study and the finals are today" and other common scenarios, such dreams can include vivid imagery, intense emotions, fantastic characters, and an uncanny sense of being connected to forces beyond one's ordinary dreaming mind. In Big Dreams, Kelly Bulkeley provides the first full-scale cognitive scientific analysis of such dreams, putting forth an original (...) theory about their formation, function, and meaning.Big dreams have played significant roles in religious and cultural history, but because of their infrequent occurrence and fantastical features, they have rarely been studied in light of modern science. We know a great deal about the religious manifestations of big dreams throughout history and around the world, but until now that cross-cultural knowledge has never been integrated with scientific research on their psychological roots in the brain-mind system. In Big Dreams, Bulkeley puts a classic psychological thesis to the scientific test by clarifying and improving it with better data, sharper analysis, and a broader evolutionary framework. He brings evidence from multiple sources, shows patterns of similarity and difference, questions prior assumptions, and provides predictive models that can be applied to new sets of data. The notion of a connection between dreaming and religion has always been intuitively compelling; Big Dreams transforms it into a solid premise of religious studies and brain-mind science. Combining evidence from religious studies, psychology, anthropology, evolutionary biology, and neuroscience, Big Dreams makes a compelling argument that big dreams are a primal wellspring of religious experience. They represent an innate, neurologically hard-wired capacity of our species that regularly provokes greater self-awareness, creativity, and insight into the existential challenges and spiritual potentials of human life. (shrink)

The reason Descartes cites for invoking the demon argument in addition to the dream argument is that the demon argument is intended to broaden the scope of Descartes’ scepticism, to subsume additional beliefs under it. I present an additional, unfamiliar reason. There is, I argue, an important difference between the two sceptical arguments. It pertains not to their scope, but to their “depth”, to the kind of scepticism they are capable of inducing.

Standard accounts of delusion explain them as responses to experience. Cognitive models of feature binding in the face recognition systems explain how experiences of mismatch between feelings of "familiarity" and faces can arise. Similar mismatches arise in phenomena such as déjà and jamais vu in which places and scenes are mismatched to feelings of familiarity. These cognitive models also explain similarities between the phenomenology of these delusions and some dream states which involve mismatch between faces, feelings of familiarity and (...) identities. Given these similarities it makes sense to retain that aspect of the standard account in the face of revisionist arguments that feature binding anomalies which lead to delusions of misidentification are not consciously experienced. (shrink)

ArgumentThe argument of this paper is to situate The Interpretation of Dreams within an historical context. It is, therefore, impossible to believe Freud entirely when he staged himself in his letters to Fliess as a mere discoverer. In reality Freud also felt he belonged to a learned community of dream specialists, whom I call “dreaming scientists” and “scientific dreamers.” Instead of speaking, as Ellenberger does, in terms of influence, I will be offering as an example a portrait of (...) Freud as a reader of two French authors, Maury, and indirectly, Hervey de Saint-Denys. I will analyze how Freud staged himself as replacing Maury and dreaming sometimes like Hervey de Saint-Denys. My premise in this work is that we must forget Freud, in order to adventure into a learned dream culture peculiar to the nineteenth century. Only afterwards can we come back to Freud and place him in this context as a creative heir. (shrink)

In a recent, and influential, article, Crispin Wright maintains that a familiar form of scepticismwhich finds its core expression in Descartes’ dreaming argumentcan be defused (or, to use Wright’s own parlance, “imploded”), by showing how it employs self-defeating reasoning. I offer two fundamental reasons for rejecting Wright’s ‘implosion’ of scepticism. On the one hand, I argue that, even by Wright’s own lights, it is unclear whether there is a sceptical argument to implode in the first place. On the (...) other, I claim that even on the supposition that Wright has indeed succeeded in setting-up such an argument, he nevertheless fails to follow-through with an adequate response. A diagnosis of the failure of Wright’s approach is then given in the context of the wider sceptical debate. (shrink)

Jennifer Windt’s Dreaming is an enormously rich and thorough book, developing illuminating connections between dreaming, the methodology of psychology, and various philosophical subfields. I’ll focus on two epistemological threads that run through the book. The first has to do with the status of certain assumptions about dreams. Windt argues that the assumptions that dreams involve experiences, and that dream reports are reliable — are methodologically necessary default assumptions, akin to Wittgensteinian hinge propositions. I’ll suggest that Windt is quietly pre-supposing (...) some sceptical assumptions, and that recent literature in epistemic externalism may bear in important ways on her arguments. The second thread involves the perennial sceptical worry that dreaming threatens ordinary knowledge. I’ll suggest again that Windt makes tacit sceptical assumptions one may wish to resist. (shrink)

Dreaming is a communicative activity between the most sensitive archive of the enregistered experience of life on the earth, the brain, and the most plastic medium for the discovery and practice of meaning, the mind or culture. Both love and war have been made on the basis of dreams, not to mention scientific discoveries. In ancient Greece dreams were medicinal parts of curative sleeping or "incubation" rites in the temple of Aesculapius, and many psychoanalytic physicians today still consider dreams as (...) possessing therapeutic potential. The ethnographic literature gives ample testimony to the great significance accorded to dreams by all of the world cultures. Dreams form a rich store of ethnographic evidence, and their indigenous interpretations can often illuminate the central issues and conflicts of a people otherwise hidden from obvious view. Given these facts, plus the physiological facts that the dream process itself involves deeply-rooted material brain functions, and that rapid eye movement, or REM, sleep, which is the key indicator of human dreaming, is shared by all mammals, it remains strange how little attention is given to dreaming as a formative aspect of human evolution and culture. -/- This essay addresses dreaming as a formative aspect of human evolution and culture by viewing dreaming as a borderland between biology and culture, a thoroughly social, yet private experience. Dreaming not only highlights the "cultic" roots of culture—the spontaneous impulse to meaning—but also illustrates one of the ways in which the technics of the biosocial human body itself form the primary source of culture. I show why dreaming, although private, is a thoroughly cultural, biological, communicative activity. -/- Culture and biology are often treated by social scientists as though they were oil and water, not to be mixed. I should inform the culture theorist at the start that I am fully aware of the assumed nature-culture dichotomy, and that I reject it. I do so not because I am a sociobiologist, quite the contrary, rather because I am a semiotician, and my studies of signs have led me toward a critical reconstruction of the concepts of nature and culture. In what follows I beg the reader's patience, since I will draw from diverse materials and project some speculative hypotheses in places in order to make my argument. -/- . (shrink)

For the anti-realist, the truth about a subject's past thoughts and attitudes is determined by what he is subsequently disposed to judge about them. The argument for an anti-realist interpretation of Wittgenstein's view of past-tense statements seems plausible in three cases: dreams, calculating in the head, and thinking. Wittgenstein is indeed an anti-realist about dreaming. His account of calculating in the head suggests anti-realism about the past, but turns out to be essentially realistic. He does not endorse general anti-realism (...) about past thoughts; but his treatment does in some cases involve elements of anti-realism, unacceptable in some instances but possibly correct in others. (shrink)

As sources of knowledge, perception and testimony are both vulnerable to sceptical arguments. To both arguments a Moorean response is possible: both can be refuted by reference to particular things known by perception and testimony. However, lies and dreams are different possibilities and they are different in a way that undercuts the plausibility of a Moorean response to a scepticism of testimony. The condition placed on testimonial knowledge cannot be trivially satisfied in the way the Moorean would suggest. This has (...) substantial implications for any non-sceptical epistemological theory of testimony. (shrink)

If my argument here is successful, it will follow that this paper should have been included in the first volume of this series, The Human Agent ; for I want to contend that the topic of dreams belongs to philosophy of mind rather than to theory of knowledge.

Does the material basis of conscious experience extend beyond the boundaries of the brain and central nervous system? In Clark 2009 I reviewed a number of ‘enactivist’ arguments for such a view and found none of them compelling. Ward (2012) rejects my analysis on the grounds that the enactivist deploys an essentially world-involving concept of experience that transforms the argumentative landscape in a way that makes the enactivist conclusion inescapable. I present an alternative (prediction-and-generative-model-based) account that neatly accommodates all the (...) positive evidence that Ward cites on behalf of this enactivist conception, and that (I argue) makes richer and more satisfying contact with the full sweep of human experience. (shrink)

Ernest Sosa has proposed two different ways to respond to dreaming skepticism. In this paper I argue that Sosa's first response —which centers on holding that we have no beliefs in dreams— does not appear to be successful against either the hyperbolic or the realistic dreaming skeptic. I also argue that his second attempt to respond to the dreaming skeptic by arguing that perceptual knowledge indeed counts as what he calls "animal knowledge", may succeed but requires us to perform what (...) appears to be some radical surgery on the concept of knowledge; a radical surgery that, as I show, is probably unnecessary to avoid dreaming skepticism. Finally, I sketch some independent considerations why I think that the hyperbolic skeptic's dreaming argument is not acceptable. Ernesto Sosa propone dos maneras de responder al escéptico del sueño. En este ensayo argumento que su primera propuesta, según la cual no tenemos creencias en los sueños, no parece ser una buena respuesta en contra de ninguno de los escepticismos del sueño, de los cuales distingo dos tipos: el hiperbólico y el realista. También argumento que su segunda propuesta para responder al escéptico del sueño, en la que argumenta que el conocimiento perceptual sí cuenta como conocimiento animal, quizá resulte exitosa; sin embargo, ésta requiere llevar a cabo una cirugía radical en el concepto de conocimiento; una cirugía que, como muestro, es probablemente innecesaria para evitar el escepticismo del sueño. Finalmente bosquejo algunas razones independientes por las cuales considero que el argumento del escéptico hiperbólico del sueño no es aceptable. (shrink)

In his monograph Dreaming (1959), Normal Malcolm puts forward the following three theses: (1) The temporal location of dreams as taking place in one’s sleep is not an empirical fact, but determined by grammar. (2) This grammatical determination does not allow dreams a precise date in physical time. (3) Dreams do not consist of mental occurrences. I argue that (1) is indeed perfectly true, whereas (2) is false; (3) is not borne out by Malcolm’s verificationist main argument, although it (...) can be shown to be largely true for other considerations. (shrink)

Higher-Order Thought (HOT) theories of consciousness maintain that the kind of awareness necessary for phenomenal consciousness depends on the cognitive accessibility that underlies reporting. -/- There is empirical evidence strongly suggesting that the cognitive accessibility that underlies the ability to report visual experiences depends on the activity of the dorsolateral prefrontal cortex (dlPFC). This area, however, is highly deactivated during the conscious experiences we have during sleep: dreams. HOT theories are jeopardized, as I will argue. I will briefly present HOT (...) theories in the first section. Section 2 offers empirical evidence to the effect that the cognitive accessibility that underlies the ability to report depends on the dorsolateral prefrontal cortex: dlPFC is the neural correlate of HOTs. Section 3 shows the evidence we have of the deactivation of this brain area during dreams and, in section 4, I present my argument. Finally, I consider and rejoin two possible replies that my opponent can offer: the possibility of an alternative neural correlate of HOTs during dreams and the denial that we have phenomenally conscious experiences during sleep. (shrink)

In this paper I aim to elucidate Wittgenstein’s claim that the so-called dream argument is senseless. Unlike other interpreters, who understand the sentence “I am dreaming” as contradictory or self-defeating, I intend to elucidate in what sense one should understand it as senseless or, more precisely, as nonsensical. In this sense, I propose to understand the above-mentioned claim in light of Wittgenstein’s criticism of skepticism from the _Tractatus logico-philosophicus_ to his last writings. I intend to show that the (...) words “I am dreaming” are nonsensical in the same sense as the alleged proposition “There are physical objects” or the expression of doubt about the existence of external objects. (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)

Threat themes are clearly over-represented in dreams. Threat is, however, not the only theme with potential evolutionary significance. Even for hypnagogic and hypnopompic hallucinations during sleep paralysis, for which threat themes are far commoner than for ordinary dreaming, consistent non-threat themes have been reported. Revonsuo's simulation hypothesis represents an encouraging initiative to develop an evolutionary functional approach to dream-related experiences but it could be broadened to include evolutionarily relevant themes beyond threat. It is also suggested that Revonsuo's evolutionary re-interpretation (...) of dreams might profitably be compared to arguments for, and models of, evolutionary functions of play. [Revonsuo]. (shrink)

This paper offers new arguments to reject the alleged dream of immortality. In order to do this, I firstly introduce an amendment to Michael Hauskeller’s approach of the “immortalist fallacy”. I argue that the conclusion “we do not want to live forever” does not follow from the premise “we do not want to die”. Next, I propose the philosophical turn from “normally” to “under these circumstances” to resolve this logical error. Then, I review strong philosophical critiques of this transhumanist (...) purpose of immortality in the literature. There are two key questions related to the possibility of fulfilling this goal: the hard problem of consciousness and the personal identity dilemma. Finally, I defend a specific type of indefinite life and justify that it is more desirable than our current limited life. (shrink)

Scepticism about external world knowledge is frequently claimed to emerge from Descartes’s dreaming argument. That argument supposedly challenges one to have some further knowledge — the knowledge that one is not dreaming that p — if one is to have even one given piece of external world knowledge that p. The possession of that further knowledge can seem espe-cially important when the dreaming possibility is genuinely Cartesian (with one’s dreaming that p being incompatible with the truth of one’s (...) accompany-ing belief that p). But this paper shows why that Cartesian use of that possi-bility is not at all challenging. It is because that putative sceptical challenge reduces to a triviality which is incompatible with the sceptic’s having de-scribed some further piece of knowledge which is needed, if one is to have the knowledge that p. (shrink)

Nanotechnology has recently been identified with principles of sustainability and with a ‘green’ agenda generally . Some maintain that this green dream of nanotechnology is a rather ephemeral societal phenomenon that owes its existence to the campaign ploys of politics and business. This paper argues that deeper lying societal and cognitive structures are at work here that complement or even substantiate in some sense the seemingly manipulative saying of a greening of nanotechnologies. Taking seriously the concept of ‘green nano’, (...) this paper examines the common ground between sustainability discourse and the discourse of nanotechnology. Green nanotechnology is understood as a boundary concept in which disparate discourses and concepts join together. The primary concern of the paper is to show that nanodiscourse and ecodiscourse share visions of control and of excess. Both ecotechnology and nanotechnology accept and incorporate arguments about limited growth, and each develops strategies of control—be it through a new-found precision in the control of material flows or through greater efficiency in product design. (shrink)

Aphantasia is a recently discovered disorder characterised by the total incapacity to generate visual forms of mental imagery. This paper proposes that aphantasia raises important theoretical concerns for the ongoing debate in the philosophy and science of consciousness over the nature of dreams. Recent studies of aphantasia and its neurobehavioral correlates reveal that the majority of aphantasics, whilst unable to produce visual imagery while awake, nevertheless retain the capacity to experience rich visual dreams. This finding constitutes a novel explanandum for (...) theories of dreaming. Specifically, I argue that the recent dream reports of aphantasics constitute an empirical challenge to the emerging family of views which claim that dreams are essentially imaginative experiences, constitutively involving the kinds of mental imagery which aphantasics, ex-hypothesi, lack. After presenting this challenge in the context of Jonathan Ichikawa’s recent arguments for this view, I argue that this empirical challenge may be overcome if the imagination theorist abandons Ichikawa’s account of dreaming in favour of a modified version. This involves the claim that dreams are essentially inactive and constitutively involve non voluntary forms of imagination. I conclude with a suggestion for further research which can test the viability of this alternative hypothesis, and move the debate forward. (shrink)

A familiar anti-sceptical response (à la Sosa) to radical sceptical scenarios employs the safety of knowledge. Radical sceptical scenarios are purported to be too modally remote to really threaten knowledge of ordinary propositions. Why? Because knowledge requires safety, and safety requires the target belief to be true in all nearby possible worlds, but radical sceptical scenarios purportedly take place at distant possible worlds. Hence, the safety theorist claims that radical sceptical scenarios don’t challenge our knowledge of ordinary propositions. But it's (...) alleged by Sosa and others that there's one radical sceptical scenario that can’t be dismissed so easily: the dream scenario. After all, unlike evil demons and brains in vats, ‘dreaming is a daily part of our lives…it is too close for comfort’. In this paper, I sketch an argument to the effect that there's good reason to think that the dream of dream scepticism describes a modally remote possibility, in which case I argue that if the safety-based anti-sceptical response is successful against the evil demon sceptical scenario, the brain in a vat sceptical scenario, and other Cartesian sceptical scenarios in this mould, then it's successful against the dream sceptical scenario as well. (shrink)