How can abductive reasoning be physical, feasible, and reliable? This is Fodor’s riddle of abduction, and its apparent intractability is the cause of Fodor’s recent pessimism regarding the prospects for cognitive science. I argue that this riddle can be solved if we augment the computational theory of mind to allow for non-computational mental processes, such as those posited by classical associationists and contemporary connectionists. The resulting hybrid theory appeals to computational mechanisms to explain the semantic coherence of inference (...) and associative mechanisms to explain the efficient retrieval of relevant information from memory. The interaction of these mechanisms explains how abduction can be physical, feasible, and reliable. (shrink)

One might be surprised at finding a protracted refutation of the theory of relativity in a turbine engineering journal. Milena Wazeck says we should not. Once we grasp the common threads among anti-relativity activists in the 1920s, she argues, it becomes clear why turbine engineering was a natural home for such ideas.Einstein’s Opponents contends that historians’ current understanding of the anti-relativity movement is obscured by the enormous shadow of the Nazis. Instead of reaching forward to the 1930s to explain the (...) clash of the 20s, it instead points us back to the long nineteenth century. There we find the wonderfully named “world riddle solvers.” They were a group who saw themselves as scientists generating new knowledge, although they functioned almost completely outside the circles of academic science. They often worked in spiritual or holistic contexts and built elaborate theories based on core ideas such as occultism, vitalism, and monism. These theories carried titles such .. (shrink)

Some have suggested that certain classical physical systems have undecidable long-term behavior, without specifying an appropriate notion of decidability over the reals. We introduce such a notion, decidability in (or d- ) for any measure , which is particularly appropriate for physics and in some ways more intuitive than Ko's (1991) recursive approximability (r.a.). For Lebesgue measure , d- implies r.a. Sets with positive -measure that are sufficiently "riddled" with holes are never d- but are often r.a. This explicates Sommerer (...) and Ott's (1996) claim of uncomputable behavior in a system with riddled basins of attraction. Furthermore, it clarifies speculations that the stability of the solar system (and similar systems) may be undecidable, for the invariant tori established by KAM theory form sets that are not d-. (shrink)

There is no uniquely standard concept of an effectively decidable set of real numbers or real n-tuples. Here we consider three notions: decidability up to measure zero [M.W. Parker, Undecidability in Rn: Riddled basins, the KAM tori, and the stability of the solar system, Phil. Sci. 70(2) (2003) 359–382], which we abbreviate d.m.z.; recursive approximability [or r.a.; K.-I. Ko, Complexity Theory of Real Functions, Birkhäuser, Boston, 1991]; and decidability ignoring boundaries [d.i.b.; W.C. Myrvold, The decision problem for entanglement, in: R.S. (...) Cohen et al. (Eds.), Potentiality, Entanglement, and Passion-at-a-Distance: Quantum Mechanical Studies fo Abner Shimony, Vol. 2, Kluwer Academic Publishers, Great Britain, 1997, pp. 177–190]. Unlike some others in the literature, these notions apply not only to certain nice sets, but to general sets in Rn and other appropriate spaces. We consider some motivations for these concepts and the logical relations between them. It has been argued that d.m.z. is especially appropriate for physical applications, and on Rn with the standard measure, it is strictly stronger than r.a. [M.W. Parker, Undecidability in Rn: Riddled basins, the KAM tori, and the stability of the solar system, Phil. Sci. 70(2) (2003) 359–382]. Here we show that this is the only implication that holds among our three decidabilities in that setting. Under arbitrary measures, even this implication fails. Yet for intervals of non-zero length, and more generally, convex sets of non-zero measure, the three concepts are equivalent. (shrink)

The album Echo was produced in a depressed, drug-riddled phase when Tom Petty’s first marriage was ending and his physical condition so degraded that he took to using a cane. Petty filmed no videos, avoided playing the album’s songs on the follow-up tour and reported little memory of its making. The thoughtfulness and self-reflection that traumatic circumstances spur distinguish the album. So too does the tendency to look backwards in times of crisis, whether in hopes of finding solidity in the (...) past or just out of exhausted inability to cope with the present. -/- While melancholically creative, the album might be regarded as an echoing of past musical fragments. The sprightly mix of acoustic and electric guitars, the backing vocal harmonies and the stories of loss in songs such as “Won’t Last Long” and “This One’s for Me” harken to Petty’s albums from the late 80s to mid-90s. “Accused of Love” similarly contains echoes of Petty’s more upbeat work, but with depressing lyrical undertones. The production qualities and lyrics of “Rhino Skin” recollect “Asshole,” a Beck cover from Petty’s previous album. “I Don’t Wanna Fight”—a Heartbreakers performance composed and sung by Mike Campbell—returns to the hard driving rock of Damn the Torpedoes. The lyrics, straight-laced drums and layered drones of electric guitars of “Free Girl Now” go back further to “American Girl,” which itself was influenced by psychedelic music. At the same time, all of this typifies Petty’s oeuvre. Throughout his career, he made music steeped in past rock traditions. He was also a seminal figure in Southern rock, with its emphatically nostalgic character. -/- The crisis that Petty was experiencing echoes throughout the album in more specific ways, with many songs repeating the theme of being up or down, high or low. The theme of fighting or not wanting to has an especially strong echo, showing up in “Swingin’,” “Billy the Kid” and “I Don’t Wanna Fight.” These songs, in turn, exhibit nostalgia for past icons, with protagonists going down hard like Billy the Kid; or going down swinging like Sonny Liston; or again like Benny Goodman, Glenn Miller and Sammy Davis in a punny reference to the swing era. -/- The retrospective feel of the album is one of looking to the past for the sake of self-preservation in the present, along lines discussed by Nietzsche. While symptomatic of illness, Nietzsche maintains this movement “springs from the protective instinct of a degenerating life which tries by all means to sustain itself and to fight for existence.” This seeming denial of growth can, as Nietzsche continues, be “among the greatest conserving and yes-creating forces of life.” Petty clearly associated Echo with personal grief, refusing to listen to it for years. As with many other examples of art, however, the album was also a way of surviving and growing beyond a present trauma, and one more specifically that compelled him to overcome an important part of his past, namely, his wife of 20-plus years. One can speculate that clinging to fragments of the past—musical and otherwise—was a way of coping with a difficult present and a fading past. (shrink)

In this paper I argue that presentism has a problem accounting forthe truth of statements whose truth conditions seem to require therebe relations that hold between present and non-present objects. Imotivate the problem and then examine several strategies for dealingwith the problem. I argue that no solution is forthcoming, and thispresents a prima facie problem for presentism.

Over the past few decades, significant advances have been made in public engagement with, and the democratization of, science and technology. Despite notable successes, such developments have often struggled to enhance public trust, avert crises of expertise and democracy, and build more socially responsive and responsible science and innovation. A central reason for this is that mainstream approaches to public engagement harbor what we call “residual realist” assumptions about participation and publics. Recent coproductionist accounts in science and technology studies offer (...) an alternative way of seeing participation as coproduced, relational, diverse, and emergent but have been somewhat reluctant to articulate what this means in practice. In this paper, we make this move by setting out a new framework of interrelating paths and associated criteria for remaking public participation with science and democracy in more experimental, reflexive, anticipatory, and responsible ways. This framework comprises four paths to: forge reflexive participatory practices that attend to their framings, emergence, uncertainties, and effects; ecologize participation through attending to the interrelations between diverse public engagements in wider systems; catalyze practices of anticipatory reflection to bring about responsible democratic innovations; and reconstitute participation as constitutive of systems of technoscience and democracy. (shrink)

How come quantum theory has anything to do with mind? Is your theory refutable? What is the point of all the technical detail? Do you suggest that the operation of the brain involves large scale quantum coherence? Isn't large scale quantum coherence necessary to solve the problem of the unity of consciousness? How does a many-minds interpretation survive Occam's razor? What, briefly, is your current philosophical position? What is your understanding of the relationship between mind and brain for split-brain patients? (...) Do you believe that the mind can survive the death of the brain? No journal reference is given for several of the recent papers on your home page. Where will these papers be printed? How are the “source” and “pdf” versions of the papers on your home page produced and viewed? Why does the page with your photograph behave oddly in some browsers? Where can I find an elementary introduction to the interpretation of quantum theory? Doesn't decoherence theory solve all the problems of the interpretation of quantum theory? How do the ambiguities of decoherence affect the many-worlds interpretation? Could you expand on your answers to the two previous questions? Why isn't the conventional interpretation of quantum theory adequate? What about the Bohm interpretation? What about consistent histories? Does the present many-minds interpretation solve all the problems? (shrink)

The influential account of contractualist moral theory offered recently by T. M. Scanlon in What We Owe to Each Other is not intended to account for all the various moral commitments that people have; it covers only a narrow—though important—range of properly moral concerns and claims. Scanlon focuses on what he calls the morality of right and wrong or, as he puts it in his title, what we owe to each other. The question arises as to whether nonhuman animals can (...) be wronged in the narrow sense of a moral wrong with which contractualism is concerned. Can we owe things to nonhuman animals? Scanlon is sensitive to the importance of this question, but he ultimately favors an account in which the perspectives of nonhuman animals are not explicitly included in contractualist theorizing. Nevertheless, it appears that contractualism, largely as Scanlon conceives it, can accommodate duties to nonhuman animals. Moreover, if contractualism cannot make this accommodation, then its status as a theory that answers to important common-sense moral intuitions becomes questionable in ways that extend beyond its failure to live up to intuitions many share about the status of nonhuman animals. (shrink)

Brings together and interprets previously hard-to-find texts, new translations and passages detailing the interplay between philosophy and psychopathology.

This paper addresses the political constraints on science through a pragmatist critique of Philip Kitcher’s account of “well-ordered science.” A central part of Kitcher’s account is his analysis of the significance of items of scientific research: contextual and purpose-relative scientific significance replaces mere truth as the aim of inquiry. I raise problems for Kitcher’s account and argue for an alternative, drawing on Peirce’s and Dewey’s theories of problem-solving inquiry. I conclude by suggesting some consequences for understanding the proper conduct of (...) science in a democracy. (shrink)

*The views in this article are the author's alone and should not be construed as policy statements of the American Medical Association.

Technical results about the time dependence of eigenvectors of reduced density operators are considered, and the relevance of these results is discussed for modal interpretations of quantum mechanics which take the corresponding eigenprojections to represent definite properties. Continuous eigenvectors can be found if degeneracies are avoided. We show that, in finite dimensions, the space of degenerate operators has co-dimension 3 in the space of all reduced operators, suggesting that continuous eigenvectors almost surely exist. In any dimension, even when degeneracies are (...) hit, we find conditions under which a theorem due to Rellich can provide continuous eigenvectors. We use this result to formulate an extended version of the modal interpretation. We also discuss eigenvector instability which we argue poses a serious problem for the modal interpretation, even in our extended version. Many examples are given to illustrate the mathematics. (shrink)

In the attempt to understand the norms governing believers, epistemologists have tended to focus on individual belief as the primary object of epistemic evaluation. However, norm governance is often assumed to concern, at base, things we can do as a free exercise or manifestation of our agency. Yet believing is not plausibly conceived as something we freely do but rather as a state we are in, usually as the mostly automatic or involuntary result of cognitively processes shaped by nature, bias, (...) and ideology. In this paper, I sketch a response to this tension. This response is based on rejecting the traditional theoretical focus on an individual’s particular beliefs as the primary object of normative epistemic evaluation. If we shift our focus from the particular beliefs of individuals to the community and its information managing practices, we may lessen the tension between norm governance and automaticity and involuntariness in a way that construes autonomous cognitive agency as a resultant of rather than a precondition for our norm-governed epistemic sociality. (shrink)

There is a tension between the “growing block” account of time (closed past, open future) and the possibility of backwards time travel. If Tim the time traveler can someday travel backwards through time, then he has (in a certain sense) already been. He might discover this fact before (in another sense) he goes. Hence a dilemma: it seems that either Tim’s future is determined in an odd way or cases of (temporary) ontic indeterminate identity are possible. Either Tim cannot avoid (...) heading for the past or he is only indeterminately that guy who appeared in the past with many of Tim’s memories. Determinacy in the past implies a degree of determinism in the future; indeterminism about the future seeps back to the past. (shrink)

Daniel Dennett is one of the most influential thinkers at the interface between philosophy and science. This book is the first comprehensive examination of Dennett ’s ideas on the nature of thought, consciousness, free will, and the significance of Darwinism. A highly original introduction to contemporary thinking about the relationship between mind and science. This is the first comprehensive examination of Dennett ’s ideas on the nature of thought, consciousness, free will, and the significance of Darwinism. Examines Dennett ’s unique (...) response to the question of when and how science should affect the conception that we have of ourselves. Casts new light on specific controversies: Could robots ever think, feel, and enjoy freedom? Does Dennett really explain consciousness? Are mental states real or merely ‘useful fictions’? Do we have free will? Is the self a ‘centre of narrative gravity’? (shrink)

The general issue addressed in this dissertation is: what do the models of formal model-theoretic semantics represent? In chapter 2, I argue that those of first-order classical logic represent meaning assignments in possible worlds. This motivates an inquiry into what the interpretations of first-order quantified model logic represent, and in Chapter 3 I argue that they represent meaning assignments in possible universes of possible worlds. A possible universe is unpacked as one way model reality might be. The problem arises here (...) as to how we are to understand the distinction between the actual and the possible as it relates to modal reality. ;Along with the development of the main arguments in Chapters 2 and 3, the dissertation assesses the status of semantic accounts or logical properties and relations. Specifically, what does the model-theoretic account of a logically possible situation add to the syntactic account ? ;Proofs of invalidity in terms of the models of formal semantics do not establish that it is possible for the premises to be true and the conclusion false, since a formal model is merely given by a consistent set of sentences. Unless there is some way to generate a non-formal model from a formal one, such proofs do not really go beyond syntactic notions. The dissertation ends by concluding that there is no way to generate a non-formal model from a formal one without relying on logical intuitions that are syntactical. ;Hence efforts to construct a semantic basis for model logic independent of syntactic commitments are misguided. However, in classical logic the independence of the semantic account from the syntactic one is grounded on the intuition that it is metaphysically possible for there to be a denumerably infinite totality of objects. (shrink)

This paper develops a model of individual decision-making under bounded rationality in which discretionary cognitive adjustment creates a durable stock that complements choice of action. While it increases utility, adjustment also entails a cost, because focusing attention optimally is effortful and mental resources are scarce. Associated behavioral phenomena are categorized based on whether the operative motivation in adjusting is forward-looking utility maximization or justification of prior action. The theory is in line with prior conceptions of cognitive dissonance, but also offers (...) a more empirically consistent explanation of the endowment effect, persuasive advertising, and sunk-cost effects than existing accounts. (shrink)

This paper looks at two 20th century theories of tragedy: those of Cornelius Castoriadis and Albert Camus. The theories that each proffer of this ancient cultural form are striking. Against more standard views, both theorists stress that tragedy is a cultural form that has only arisen historically in cultures whose forms of religious thought have been laid open to question. In this way, both argue that tragedy is an important democratic cultural form, which stages the confrontation between a no longer (...) unquestionable divine order, and human autonomy.The intent of the paper, from the start, is a political one. It wants to place Camus alongside Castoriadis as a 'post-Marxist' thinker, who belongs meaningfully to what Dick Howard has called 'the Marxian legacy'. More than this, it aims to do this by staging Camus' theorisation of tragedy, with Castoriadis', as a powerful riposte to the conservative criticism of democracy as a modern political form, that is, that it cannot muster sacral cultural forms forceful enough to meaningfully unite people beneath its banner. (shrink)

An introduction to natural law theory and a challenge to re-think current biblical scholarship on the topic. Levering establishes the relevance of a biblical worldview to the contemporary pursuit of a moral life and locates his argument in the context of the philosophical development of natural law theory from Cicero to Nietzsche.

We focus on the production of efficient descriptions of objects, actions and events. We define a type of efficiency, textual economy, that exploits the hearer’s recognition of inferential links to material elsewhere within a sentence. Textual economy leads to efficient descriptions because the material that supports such inferences has been included to satisfy independent communicative goals, and is therefore overloaded in the sense of Pollack [18]. We argue that achieving textual economy imposes strong requirements on the representation and reasoning used (...) in generating sentences. The representation must support the generator’s simultaneous consideration of syntax and semantics. Reasoning must enable the generator to assess quickly and reliably at any stage how the hearer will interpret the current sentence, with its (incomplete) syntax and semantics. We show that these representational and reasoning requirements are met in the SPUD system for sentence planning and realization. (shrink)

Sunstein aims to provide a nonsectarian account of moral heuristics, yet the account rests on a controversial meta-ethical view. Further, moral theorists who reject act consequentialism may deny that Sunstein's examples involve moral mistakes. But so what? Within a theory that counts consequences as a morally weighty feature of actions, the moral judgments that Sunstein points to are indeed mistaken, and the fact that governmental action at odds with these judgments will be controversial doesn't bar such action.

John Searle claims that intentional states require a set of non-intentional background capacities in order to function. He insists that this 'Background' should be construed naturalistically, in terms of the causal properties of biological brains. This paper examines the relationship between Searle's conception of the Background and his commitment to biological naturalism. It is first observed that the arguments Searle ventures in support of the Background's existence do not entail a naturalistic interpretation. Searle's claim that external realism is part of (...) the Background is then addressed. It is shown that this claim implies an implicit understanding of reality, which is presupposed by the intelligibility of any objective, scientific description. As a consequence, Searle's account of the Background's role is incompatible with his insistence that it can be comprehensively characterized in terms of biological capacities. I conclude by showing that, if the tension is resolved by rejecting biological naturalism, Searle's position takes a substantial step in the direction of Heideggerian phenomenology, a move Searle has emphatically resisted in his various exchanges with Hubert Dreyfus. (shrink)

While it is often supposed that Spinoza understood a life of virtue as one of pure activity, with as few passions as possible, this paper aims to make explicit how the passions for Spinoza contribute positively to our virtue. This requires, first, explaining how a passion can increase our power, given Spinoza’s view on the passions generally, which, in turn, requires coming to terms with the problem of passive pleasure, that is, the problem of explaining how being passive can cause (...) an increase in our power. In brief, this paper will argue that, for Spinoza, even when we are passive, we are somewhat active or, in Spinoza’s language, “adequate” to varying degrees. The passions represent activity because they exercise our understanding by providing us with intelligence about external bodies and our own bodies, in particular, the degree of our bodies’ perfection. It follows that a passion can be sufficiently adequate to bring about an increase in one’s power; in this sense, they can be virtuous. Moreover, this paper will show that the passions can also be virtuous in a moral sense. The view goes roughly as follows: according to Spinoza, the passions serve as a measure of our perfection. Consequently, they play a necessary role in moral reasoning, by indicating which activities increase or hinder our virtue. On this view, a truly virtuous person would require the passions in order to engage consistently in the sorts of activities which increase her power, in particular, following reason. Since this sort of consistency in behavior is necessary for a virtuous character, the passions can be virtuous in the sense that they are necessary aspects of the sort of character which disposes us to act according to reason. (shrink)

1. Set Sources - The first sources that you need to consult are those mentioned in your set question. (Note: If you are a first year undergraduate, your primary task is to master the sources listed for your set question. Once you have done this, you may wish to dabble in the sources listed below).

Evolution is not like an exam in which pre-set problems need to be solved. Failing to recognise this point, Clark & Thornton misconstrue the type of explanation called for in species learning although, clearly, species that can trade spaces have more chances to discover novel beneficial behaviours. On the other hand, the trading spaces strategy might help to explain lifetime learning successes.

Crespi & Badcock (C&B) convincingly argue that autism and schizophrenia are diametric malfunctions of the social brain, but their core imprinting hypothesis is less persuasive. Much of the evidence they cite is unrelated to their hypothesis, is selective, or is overstated; their hypothesis lacks a clearly explained mechanism; and it is unclear how their explanation fits in with known aspects of the disorders.

This article introduces a series of measures of the geographical manifestation of a subset of unsolicited commercial email, i.e. spam, used to perpetrate 'advanced fee fraud'. Known as '419 spam', this activity has strong historic ties to Nigeria, where similar frauds were operated via physical letters and faxes during the 1970s and 1980s. This article's analysis reveals that 419 spam operates via a globally dispersed network that nevertheless contains a clear agglomeration of activity in West Africa. Building upon theories of (...) the intersection of cyberspace, states, and individuals, this article argues that 419 spam exemplifies the challenge offered by the Internet to the dominance of states by allowing individuals and movements to create social space that transcends borders. This process is an intriguing and ironic parallel to the description of the rise of the European nation-state as an 'imagined community' that challenged medieval systems of authority and existing social epistemologies. The emerging 'networks of imagination' developed by transnational social movements and criminal networks to define their sphere of operations present a similar challenge to the primacy of existing authority embedded in the state, particularly for states in crisis such as Nigeria. The article concludes with an examination of the off-line and online implications of 419 spam and its network of imagination for the Nigerian state and its inhabitants. Ranging from strengthening public conceptions of West Africa as a sea of corruption to a decreased ability to interact with the outside world, 419 spammers are playing an important, if illicit, role in the construction and use of Nigeria's and the world's Internet. (shrink)