Evolutionary debunking arguments purport to show that, if moral realism is true, all of our moral beliefs are unjustified. In this paper, I respond to two of the most enduring objections that have been raised against these arguments. The first objection claims that evolutionary debunking arguments are self-undermining, because they cannot be formulated without invoking epistemic principles, and epistemic principles are just as vulnerable to debunking as our moral beliefs. I argue that this objection suffers from several defects, the most (...) serious of which is that it has the unpalatable consequence that we should never revise our moral beliefs in response to evidence that our capacity for normative cognition is globally impaired. The second objection, which comes to us from Katia Vavova, claims that evolutionary debunking arguments are doomed to fail, because they attempt to show that our moral beliefs are unreliable without making any assumptions about the nature of morality, and this is impossible. I argue, to the contrary, that the etiological higher-order evidence cited by debunking arguments can give us good reason to think that our moral beliefs are unreliable, even if we make no assumptions about what morality is like. (shrink)

Brian Hedden has proposed that any successful account of options for the subjective “ought” must satisfy two constraints: first, it must ensure that we are able to carry out each of the options available to us, and second, it should guarantee that the set of options available to us supervenes on our mental states. In this paper I show that, due to the ever-present possibility of Frankfurt-style cases, these two constraints jointly entail that no agent has any options at any (...) time. This consequence, however, is clearly unacceptable, so one of Hedden’s constraints must go. Because the ability constraint is indispensable, I argue, we have no choice but to reject the supervenience constraint. Hedden’s underlying motivation for imposing the supervenience constraint is the conviction that our options should be transparent to us, but transparency also proves to be incompatible with the ability constraint, so it must be rejected as well. I conclude by sketching an unabashedly externalist account of options, which conceives of options as exhaustive combinations of atomic movements. (shrink)

Fifteen years ago, Sharon Street and Richard Joyce advanced evolutionary debunking arguments against moral realism, which purported to show that the evolutionary history of our moral beliefs makes moral realism untenable. These arguments have since given rise to a flurry of objections; the epistemic principles Street and Joyce relied upon, in particular, have come in for a number of serious challenges. My goal in this paper is to develop a new account of evolutionary debunking which avoids the pitfalls Street and (...) Joyce encountered and responds to the most pressing objections they faced. I begin by presenting a striking thought experiment to serve as an analogy for the evolution of morality; I then show why calibrationist views of higher-order evidence are crucial to the evolutionary debunking project; I outline a new rationale for why finding out that morality was selected to promote cooperation suggests that our moral judgments are unreliable; and I explain why evolutionary debunking arguments do not depend on our having a dedicated faculty for moral cognition. All things considered, I argue, evolutionary debunking arguments against moral realism are on relatively secure footing – provided, at least, that we accept a calibrationist account of higher-order evidence. (shrink)

In this paper, I defend a version of the medical model of disability, which defines disability as an enduring biological dysfunction that causes its bearer a significant degree of impairment. We should accept the medical model, I argue, because it succeeds in capturing our judgments about what conditions do and do not qualify as disabilities, because it offers a compelling explanation for what makes a condition count as a disability, and because it justifies why the federal government should spend hundreds (...) of billions of dollars, annually, on aid and accommodations for disabled people. After responding to a pair of objections Elizabeth Barnes has raised against the medical model, I contrast it with Guy Kahane and Julian Savulescu's welfarist account of disability, and with Barnes's own mere-difference view. Both of these accounts face serious challenges, although elements of Barnes's view can—and, in my opinion, should—be adopted by proponents of the medical model. (shrink)

Many response-dependence theorists equate moral truth with the generation of some affective psychological response: what makes this action wrong, as opposed to right, is that it would cause (or merit) affective response of type R (perhaps under ideal conditions). Since our affective nature is purely contingent, and not necessarily shared by all rational creatures (or even by all humans), response-dependence threatens to lead to relativism. In this paper, I will argue that emotional responses and moral features do not align in (...) the way predicted by the response-dependence theorist who wishes to tie morality to emotional affect. I further argue that since response-dependence accounts that tie morality to any sort of affect (be it an emotion, a desire, a desire to desire, or so on) cannot explain the objectivity and universality of morality; and since we do not need a psychological response to play a truth-constituting role in morality in order to explain the normativity or content of morality, we should reject such response-dependence accounts. (shrink)

Many naturalistically-minded philosophers want to accomplish a naturalistic reduction of normative (e.g. moral and epistemic) claims. Mindful of avoiding the naturalistic fallacy, such philosophers claim that they are not reducing moral and epistemic concepts or definitions. Rather, they are only reducing the extension of these normative terms, while admitting that the concepts possess a normative content that cannot be naturalistically reduced. But these philosophers run into a serious problem. I will argue that normative claims possess two dimensions of normativity. I (...) will further argue that certain of the reductionist’s commitments require that these two dimensions of normativity be given a naturalistic reduction, while the other of the reductionist’s commitments make such a reduction impossible. Thus, the reductionist’s commitments both require and forbid a reductionist account of morality and epistemology. Thus, as we will see, reductionism is torn between two incompatible requirements, and must fail. (shrink)

Discussions of conservatism in epistemology often fail to demonstrate that the principle of conservatism is supported by epistemic considerations. In this paper, I hope to show two things. First, there is a defensible version of the principle of conservatism, a version that applies only to what I will call our basic beliefs. Those who deny that conservatism is supported by epistemic considerations do so because they fail to take into account the necessarily social, diachronic and self-correcting nature of our epistemic (...) practice. Second, I will attempt to show how our basic beliefs are justified via this principle of conservatism. (shrink)

Wilfrid Sellars’s ethical theory was rich and deeply innovative. On Sellars’s view, moral judgments express a special kind of shared intention. Thus, we should see Sellars as an early advocate of an expressivism of plans and intentions, and an early theorist of collective intentionality. He supplemented this theory with a sophisticated logic of intentions, a robust theory of the categorical validity of normative expressions, a subtle way of reconciling the cognitive and motivating aspects of moral judgment, and much more— all (...) within a strict nominalism that preserves Sellars’s commitment to naturalism. The Ethics of Wilfrid Sellars offers the first systematic treatment of this sadly neglected aspect of Sellars’s work and demonstrates that his ethical theory— just like his more widely discussed epistemology— has much to contribute to current debates. (shrink)

Drawing on a rich pragmatist tradition, this book offers an account of the different kinds of ‘oughts’, or varieties of normativity, that we are subject to contends that there is no conflict between normativity and the world as science describes it. The authors argue that normative claims aim to evaluate, to urge us to do or not do something, and to tell us how a state of affairs ought to be. These claims articulate forms of action-guidance that are different in (...) kind from descriptive claims, with a wholly distinct practical and expressive character. This account suggests that there are no normative facts, and so nothing that needs any troublesome shoehorning into a scientific account of the world. This work explains that nevertheless, normative claims are constrained by the world, and answerable to reason and argumentation, in a way that makes them truth-apt and objective. (shrink)

Recent defenders of the divine command theory like Adams and Alston have confronted the Euthyphro dilemma by arguing that although God’s commands make right actions right, God is morally perfect and hence would never issue unjust or immoral commandments. On their view, God’s nature is the standard of moral goodness, and God’s commands are the source of all obligation. I argue that this view of divine goodness fails because it strips God’s nature of any features that would make His goodness (...) intelligible. An adequate solution to the Euthyphro dilemma may require that God be constrained by a standard of goodness that is external to Himself -- itself a problematic proposal for many theists. (shrink)

Picturing is a poorly understood element of Sellars’s philosophical project. We diagnose the problem with picturing as follows: on the one hand, it seems that it must be connected with action in order for it to do its job. On the other hand, the representational states of a picturing system are characterized in descriptive and seemingly static terms. How can static terms be connected with action? To solve this problem, we adopt a concept from recent work in Sellarsian metaethics: the (...) idea of a material practical inference, which (we argue) features centrally in how we picture. The key distinction is that the picturing of nonhuman animals involves only Humean material practical inference, in which representational states are corrected only by feedback from the environment and not from discursive interactions. The resulting view shows that Sellars’s contributions to practical philosophy (especially theory of action and metaethics) cannot be separated from his contributions to philosophy of mind, language, and cognitive science. Further, the view makes it clear that picturing is neither a version of the Given, nor is it a fifth wheel to inferential role in explaining representation, but is essential to Sellars’s model of how animals—including humans—represent their environment. (shrink)

No contemporary compatibilist account of free will can be complete unless it engages with the consequence argument. I will argue that Wilfrid Sellars offered an ingenious version of compatibilism that can be used to refute the consequence argument. Unfortunately, owing to the opacity of Sellars’s writings on free will, his solution has been neglected. I will reconstruct his view here, demonstrating how it represents a powerful challenge to the consequence argument and tying it to some recent developments in the compatibilist (...) literature. (shrink)

In this introduction, before summarizing the contents of the volume, the authors characterize materialism as it is understood within the philosophy of mind, and they identify three respects in which materialism is on the wane.

In the De Anima, Aristotle claims that the five senses are infallible about their proper objects. I contend that this claim means that sight is infallible about its proper object in its most specific form, i. e. sight is infallible about red or green and not merely about color in general. This robust claim is justified by Aristotle’s teleological principle that nature does nothing in vain. Additionally, drawing on Aristotle’s comparison of perception and one’s understanding of the essences, I defend (...) a conception of the senses in which the structure of their contents is simple rather than predicative and show how this coheres better with the rest of my interpretation. (shrink)

One important strand of Sellars’s attack on classical foundationalism from Empiricism and the Philosophy of Mind is his thesis about the priority of is-talk over looks-talk. This thesis has been criticized extensively in recent years, and classical foundationalism has found several contemporary defenders. I revisit Sellars’s thesis and argue that is-talk is epistemically prior to looks-talk in a way that undermines classical foundationalism. The classical foundationalist claims that epistemic foundations are constituted by the agent’s set of looks-judgments. However, I argue (...) that only a subset of these looks-judgments are even candidates to serve as foundations for the agent’s empirical knowledge, and membership in this subset is determined by the agent’s theory of how the world is. Thus, the epistemic force of the looks-judgments in this subset is dependent on the agent’s theory of how the world is. This means that these looks-judgments aren’t foundational at all, as the agent’s theory of how the world is is epistemically is prior to the epistemic status of these looks-judgments. This is the sense in which judgments about how the world is are epistemically prior to judgments about how things look. This conclusion allows concrete elaboration of another of Sellars’s well-know claims: “I do wish to insist that the metaphor of ‘foundation’ is misleading in that it keeps us from seeing that if there is a logical dimension in which other empirical propositions rest on observation reports, there is another logical dimension in which the latter rest on the former”. (shrink)

Plantinga famously argues against evidentialism that belief in God can be properly basic. But the epistemology of cognitive faculties such as perception and memory which produce psychologically non-inferential beliefs shows that various inferentially justified theoretical beliefs are epistemically prior to our memory and perceptual beliefs, preventing the latter from being epistemically basic. Plantinga's analogy between the sensus divinitatis and these cognitive faculties suggests that the deliverances of the sensus divinitatis cannot be properly basic either. Objections by and on behalf of (...) Plantinga to this argument are considered. (shrink)

Extending Alvin Plantinga’s model of warranted belief to the beliefs of groups as a whole, I argue that if the dogmatic beliefs of the Catholic Church are true, they are also warranted. Catholic dogmas are warranted because they meet the three conditions of my model: they are formed (1) by ministers functioning properly (2) in accordance with a design plan that is oriented towards truth and reliable (3) in a social environment sufficiently similar to that for which they were designed. (...) I show that according to Catholic doctrine the authoritative spokespersons of the Church—ecumenical councils and popes—meet these conditions when defining dogmas. I also respond to the objection that the warrant of Catholic dogmas is defeated by the plurality of non-Catholic Christian sects that deny Catholic dogmas. (shrink)

Recently, the Intelligent Design (ID) movement has challenged the claim of many in the scientific establishment that nature gives no empirical signs of having been deliberately designed. In particular, ID arguments in biology dispute the notion that neo-Darwinian evolution is the only viable scientific explanation of the origin of biological novelty, arguing that there are telltale signs of the activity of intelligence which can be recognized and studied empirically. In recent years, a number of Catholic philosophers, theologians, and scientists have (...) expressed opposition to ID. Some of these critics claim that there is a conflict between the philosophy of St. Thomas Aquinas and that of the ID movement, and even an affinity between Aquinas’s ideas and theistic Darwinism. We consider six such criticisms and find each wanting. (shrink)

The divine purpose theory —according to which that human life is meaningful to the extent that it fulfills some purpose or plan to which God has directed us—encounters well-known Euthyphro problems. Some theists attempt to avoid these problems by appealing to God’s essential goodness, à la the modified divine command theory of Adams and Alston. However, recent criticisms of the modified DCT show its conception of God’s goodness to be incoherent; and these criticisms can be shown to present an analogous (...) set of problems for the DPT. Further, the argument can be extended to any account of meaningfulness according to which the value of what humans do can only be conferred by God. Thus, it would seem that there is no tenable version of the view that meaningfulness is conferred on human life by some act or attitude of God’s. (shrink)

In his book Mind and World, John McDowell grapples with the problem that the world must and yet seemingly cannot constrain our empirical thought. I first argue that McDowell’s proposed solution to the problem throws him onto the horns of his own, intractable dilemma, and thus fails to solve the problem of rational constraint by the world. Next, I will argue that Wilfrid Sellars, in a series of articles written in the 1950s and 1960s, provides the tools to solve the (...) dilemma McDowell sets before us. We will see how, borrowing from Sellars and certain neo-Sellarsians, we can solve the problem of rational constraint by perception without resorting to a McDowellian quasi-enchantment of the world. (shrink)

Most philosophers now concede that libertarianism has failed as an account of free will. Assuming the correctness of this concession, that leaves compatibilism and hard determinism as the only remaining choices in the free will debate. In this paper, I will argue that hard determinism turns out to be a form of compatibilism, and therefore, compatibilism is the only remaining position in the free will debate. I will attempt to establish this conclusion by arguing that hard determinists will end up (...) punishing or rewarding the same acts (and omissions) that the compatibilists punish and reward. Next, I will respond to several objections that attempt to pry apart hard determinism and compatibilism. It will emerge not only that hard determinism and compatibilism are identical at the practical level, but also that the key terms employed by the hard determinist have the same meaning as equivalent terms ("free," "morally responsible," and "retributive punishment") employed by the compatibilist. I conclude that hard determinism genuinely is a form of compatibilism. (shrink)

Many authors have argued that emotions serve an epistemic role in our moral practice. Some argue that this epistemic connection is so strong that creatures who do not share our affective nature will be unable to grasp our moral concepts. I argue that even if this sort of incommensurability does result from the role of affect in morality, incommensurability does not in itself entail relativism. In any case, there is no reason to suppose that one must share our emotions and (...) concerns to be able to apply our moral concept successfully. Finally, I briefly investigate whether the moral realist can seek aid and comfort from Davidsonian arguments to the effect that incommensurability in ethics is in principle impossible, and decide that these arguments are not successful. I conclude that the epistemic role our emotions play in moral discourse does not relativize morality. (shrink)

While social epistemology is a diverse field, much of it still understands knowledge as an individual status—albeit an individual status that crucially depends on various social factors (such as testimony). Further, the literature on group knowledge until now has primarily focused on limited, specialized groups that may be said to know this or that as a group. I wish to argue, to the contrary, that all knowledge-attributions ascribe a collective status; and that this follows more or less directly from an (...) essential function of entitlement-ascriptions: Ascriptions of knowledge and entitlement serve a primarily social function in that they facilitate coordination by maintaining consensus around true beliefs, true theories, and truth-producing methodologies. This conclusion will shed light on ways in which traditional theories of knowledge (such as foundationalism and coherentism) fail to capture a central function of our epistemic practice. (shrink)

Direct realist versions of foundationalism have recently been advocated by Pryor, Huemer, Alston, and Plantinga. DRF can hold either that our foundational observation beliefs are about the simple perceptible qualities of objects, or that our foundational observation beliefs are more complex ones about objects in the world. I will show that whether our observational beliefs are simple or complex, the agent must possess other epistemically significant states in order for these observational beliefs to be justified. These other states are therefore (...) epistemically prior to observation belief, and prevent them from being epistemically foundational. (shrink)

The free will theodicy places significant value on free will: free will is of such substantial value, that God’s gift of free will to humans was justified, even though this gift foreseeably results in the most monstrous of evils. I will argue that when a state criminalizes sin, it can restrict or eliminate citizens’ exercise of metaphysical free will with respect to choosing to partake in or refrain from these activities. Given the value placed on free will in the free (...) will theodicy, theists who endorse this theodicy should thus oppose the criminalization of what I will call Millian sins —that is, actions which are immoral, but which do not directly harm another person. In other words, such theists should oppose legal moralism. (shrink)

This paper critically examines what I call the ‘testing theodicy,’ the widely held idea that natural evil exists in order to test our faith in God. This theodicy appears numerous times in the scriptures of all three Abrahamic faiths. After examining some of these scriptural passages, we will argue that in light of these texts, the notion of faith is best understood as some type of commitment such as trust, loyalty or piety, rather than as merely a belief in God’s (...) existence. After carefully showing the form this theodicy must take, I argue that the testing theodicy suffers from serious difficulties and fails to adequately account for the existence of natural evil. (shrink)

Much moral skepticism stems from the charge that moral facts do not figure in causal explanations. However, philosophers committed to normative epistemological discourse (by which I mean our practice of evaluating beliefs as justified or unjustified, and so forth) are in no position to demand that normative facts serve such a role, since epistemic facts are causally impotent as well. I argue instead that pragmatic reasons can justify our continued participation in practices which, like morality and epistemology, do not serve (...) the function of causal explanation. Finally, I defend this pragmatic justification of morality and epistemology against a number of objections, including the objection that it confuses practical and theoretical justification. (shrink)

It is plausible to suppose that the normativity of evaluative (e.g., moral and epistemic) judgments arises out of and is, in some sense, dependent on our actual evaluative practice. At the same time, though, it seems likely that the correctness of evaluative judgments is not merely a matter of what the underlying practice endorses and condemns; denial of this leads one into a rather objectionable form of relativism. In this paper, I will explore a social practice account of normativity according (...) to which normativity is grounded in our actual social practice of evaluation. I will show how this account allows normativity to be dependent on our actual evaluative practice, while allowing the correctness of evaluative judgments to be independent of this practice in important ways, and how the resulting temporal logic of reasons gives us a conception of morality and other sorts of evaluative discourse that is not historically local. (shrink)

In "The Compatibility of Naturalism and Scientific Realism" (Dec. 2003) , Brian Holtz offers two objections to my argument in "The Incompatibility of Naturalism and Scientific Realism" (in Naturalism: A Critical Appraisal , edited by William Lane Craig and J. P. Moreland, Routledge, 2000). His responses are: (1) my argument can be deflected by adopting a pragmatic or empiricist "definition" of "truth", and (2) the extra-spatiotemporal cause of the simplicity of the laws need not be God, or any other personal (...) being. (shrink)

Robert Koons has recently defended what he claims is a successful argument for the existence of a necessary first cause, and which he develops by taking “a new look” at traditional arguments from contingency. I argue that Koons’ argument is less than successful; in particular, I claim that his attempt to “shift the burden of proof” to non-theists amounts to nothing more than an ill-disguised begging of one of the central questions upon which theists and non-theists disagree. I also argue (...) that his interesting attempt to bridge (part of) the familiar gap between the claim that there is a necessary first cause and the claim that God exists is beset with numerous difficulties. (shrink)

A key question in the philosophy of logic is how we have epistemic justification for claims about logical entailment (assuming we have such justification at all). Justification holism asserts that claims of logical entailment can only be justified in the context of an entire logical theory, e.g., classical, intuitionistic, paraconsistent, paracomplete etc. According to holism, claims of logical entailment cannot be atomistically justified as isolated statements, independently of theory choice. At present there is a developing interest in—and endorsement of—justification holism (...) due to the revival of an abductivist approach to the epistemology of logic. This paper presents an argument against holism by establishing a foundational entailment-sentence of deduction which is justified independently of theory choice and outside the context of a whole logical theory. (shrink)

Some people -- including the present author -- have proposed and defended alternative restricted causal principles that block Robert Koons’s ’new’ cosmological argument without undermining the intuition that causation is very close to ubiquitous. In "Epistemological Foundations for the Cosmological Argument", Koons argues that any restricted causal principles that are insufficient for the purposes of his cosmological argument cause epistemological collapse into general scepticism. In this paper I argue, against Koons, that there is no reason to suppose that my favourite (...) restricted causal principle precipitates epistemological collapse into general scepticism. If we impose the ’same kinds’ of restrictions on causal epistemological principles and on principles of general causation, then we cannot be vulnerable to the kind of argument that Koons develops. (shrink)

Art is about the exploration of the strange and disturbing; it is not about classical fine crafting. Artists use artworks to exteriorise their inner landscapes, thereby allowing others to experience their take on life, at least vicariously. It is this exteriorisation which is ‘art’, not the aesthetic features of the individual artworks themselves, which is properly the domain of crafting and design. Aesthetics cannot explain the work of many major modern contemporary artists, because it fails to locate the underlying unifying (...) ideas. Jeff Koons qualifies as an artist not because of his production of standalone objects, but because behind these objects is a distinctive and unusual mentality and mindset which gives meaning to them. This is where the art of Jeff Koons is to be located. His work is contrasted with that of Andy Warhol and Damien Hirst, in order to further illustrate and clarify the conception of art employed in this study. (shrink)

This article owes a lot to Arthur C. Danto's heuristic writings about the Artworld, which have shown us, that the ontological status of works of art is, at least when we discuss some current, maybe even dominating trends in contemporary art, dependent on our more or less philosophical interpretations of them. The effects of the Dantoan atmosphere of theory and art historical consciousness are, still, decisive for just some contemporary art. Danto's interest in the philosophical side of contemporary art makes (...) his philosophy of art exclusive in relation to art which is less philosophically appealing than the readymade tradition, to the extent that Danto did not, for a long time, even try to incorporate problems of beauty, aesthetic experience, and formal qualities, to his theory of the Artworld. (Opening paragraph.). (shrink)

Robert Koons claims that my previous critique of his “new” cosmological argument is vitiated by confusion about the nature of defeasible argumentation.In response, I claim that Koons misrepresents—and perhaps misunderstands—the nature of my objections to his “new” cosmological argument. The main claims which I defend are: (1) that the move from a non-defeasible to a defeasible causal principle makes absolutely no difference to the success of the cosmological argument in which it is contained; and (2) that, since it is perfectly (...) well understood that non-theists have many reasons for rejecting the defeasible causal principle, it is pointless to claim that the move to a defeasible principle brings about a shift in the “burden of proof”. (Since some people may have forgotten—or may choose to ignore—the fact that non-theists do have reasons for rejecting the defeasible causal principle, I also provide a discussion of a modest sample of these reasons.). (shrink)

In “Proof-Theoretic Justification of Logic”, building on work by Dummett and Prawitz, I show how to construct use-based meaning-theories for the logical constants. The assertability-conditional meaning-theory takes the meaning of the logical constants to be given by their introduction rules; the consequence-conditional meaning-theory takes the meaning of the logical constants to be given by their elimination rules. I then consider the question: given a set of introduction rules \, what are the strongest elimination rules that are validated by an assertability (...) conditional meaning-theory based on \? I prove that the intuitionistic introduction rules are the strongest rules that are validated by the intuitionistic elimination rules. I then prove that intuitionistic logic is the strongest logic that can be given either an assertability-conditional or consequence-conditional meaning-theory. In “Grounding Grounding” I discuss the notion of grounding. My discussion revolves around the problem of iterated grounding-claims. Suppose that \ grounds \; what grounds that \ grounds that \? I argue that unless we can get a satisfactory answer to this question the notion of grounding will be useless. I discuss and reject some proposed accounts of iterated grounding claims. I then develop a new way of expressing grounding, propose an account of iterated grounding-claims and show how we can develop logics for grounding. In “Is the Vagueness Argument Valid?” I argue that the Vagueness Argument in favor of unrestricted composition isn’t valid. However, if the premisses of the argument are true and the conclusion false, mereological facts fail to supervene on non-mereological facts. I argue that this failure of supervenience is an artifact of the interplay between the necessity and determinacy operators and that it does not mean that mereological facts fail to depend on non-mereological facts. I sketch a deflationary view of ontology to establish this. (shrink)

How do people decide which claims should be considered mere beliefs and which count as knowledge? Although little is known about how people attribute knowledge to others, philosophical debate about the nature of knowledge may provide a starting point. Traditionally, a belief that is both true and justified was thought to constitute knowledge. However, philosophers now agree that this account is inadequate, due largely to a class of counterexamples (termed ‘‘Gettier cases’’) in which a person’s justified belief is true, but (...) only due to luck. We report four experiments examining the effect of truth, justification, and ‘‘Gettiering’’ on people’s knowledge attributions. These experiments show that: (1) people attribute knowledge to others only when their beliefs are both true and justified; (2) in contrast to contemporary philosophers, people also attribute knowledge to others in Gettier situations; and (3) knowledge is not attributed in one class of Gettier cases, but only because the agent’s belief is based on ‘‘apparent’’ evidence. These findings suggest that the lay concept of knowledge is roughly consistent with the traditional account of knowledge as justified true belief, and also point to a major difference between the epistemic intuitions of laypeople and those of philosophers. (shrink)

Some commentators have condemned Kant’s moral project from a feminist perspective based on Kant’s apparently dim view of women as being innately morally deficient. Here I will argue that although his remarks concerning women are unsettling at first glance, a more detailed and closer examination shows that Kant’s view of women is actually far more complex and less unsettling than that attributed to him by various feminist critics. My argument, then, undercuts the justification for the severe feminist critique of Kant’s (...) moral project. (shrink)

This paper assesses branching spacetime theories in light of metaphysical considerations concerning time. I present the A, B, and C series in terms of the temporal structure they impose on sets of events, and raise problems for two elements of extant branching spacetime theories—McCall’s ‘branch attrition’, and the ‘no backward branching’ feature of Belnap’s ‘branching space-time’—in terms of their respective A- and B-theoretic nature. I argue that McCall’s presentation of branch attrition can only be coherently formulated on a model with (...) at least two temporal dimensions, and that this results in severing the link between branch attrition and the flow of time. I argue that ‘no backward branching’ prohibits Belnap’s theory from capturing the modal content of indeterministic physical theories, and results in it ascribing to the world a time-asymmetric modal structure that lacks physical justification. (shrink)

We reconsider the pragmatic interpretation of intuitionistic logic [21] regarded as a logic of assertions and their justi cations and its relations with classical logic. We recall an extension of this approach to a logic dealing with assertions and obligations, related by a notion of causal implication [14, 45]. We focus on the extension to co-intuitionistic logic, seen as a logic of hypotheses [8, 9, 13] and on polarized bi-intuitionistic logic as a logic of assertions and conjectures: looking at the (...) S4 modal translation, we give a de nition of a system AHL of bi-intuitionistic logic that correctly represents the duality between intuitionistic and co-intuitionistic logic, correcting a mistake in previous work [7, 10]. A computational interpretation of cointuitionism as a distributed calculus of coroutines is then used to give an operational interpretation of subtraction.Work on linear co-intuitionism is then recalled, a linear calculus of co-intuitionistic coroutines is de ned and a probabilistic interpretation of linear co-intuitionism is given as in [9]. Also we remark that by extending the language of intuitionistic logic we can express the notion of expectation, an assertion that in all situations the truth of p is possible and that in a logic of expectations the law of double negation holds. Similarly, extending co-intuitionistic logic, we can express the notion of conjecture that p, de ned as a hypothesis that in some situation the truth of p is epistemically necessary. (shrink)

Many epistemologists treat rationality and justification as the same thing. Those who don’t lack detailed accounts of the difference, leading their opponents to suspect that the distinction is an ad hoc attempt to safeguard their theories of justification. In this paper, I offer a new and detailed account of the distinction. The account is inspired by no particular views in epistemology, but rather by insights from the literature on reasons and rationality outside of epistemology. Specifically, it turns on a version (...) of the familiar distinction in meta-ethics between possessing apparent normative reasons (which may be merely apparent) and possessing objective normative reasons. The paper proceeds as follows. In §1, I discuss the history of indifference to the distinction between rationality and justification in epistemology and the striking contrast with meta-ethics. I introduced the distinction between apparent reasons and possessed objective reasons in §2 and provide a deeper basis for it in §3. I explain how the ideas extend to epistemology in §4 and explore the upshots for some central issues in §5. (shrink)

The aim of this article is to investigate specific aspects connected with visualization in the practice of a mathematical subfield: low-dimensional topology. Through a case study, it will be established that visualization can play an epistemic role. The background assumption is that the consideration of the actual practice of mathematics is relevant to address epistemological issues. It will be shown that in low-dimensional topology, justifications can be based on sequences of pictures. Three theses will be defended. First, the representations used (...) in the practice are an integral part of the mathematical reasoning. As a matter of fact, they convey in a material form the relevant transitions and thus allow experts to draw inferential connections. Second, in low-dimensional topology experts exploit a particular type of manipulative imagination which is connected to intuition of two- and three-dimensional space and motor agency. This imagination allows recognizing the transformations which connect different pictures in an argument. Third, the epistemic—and inferential—actions performed are permissible only within a specific practice: this form of reasoning is subject-matter dependent. Local criteria of validity are established to assure the soundness of representationally heterogeneous arguments in low-dimensional topology. (shrink)

The present paper wants to promote epistemic pluralism as an alternative view of non-classical logics. For this purpose, a bilateralist logic of acceptance and rejection is developed in order to make an important di erence between several concepts of epistemology, including information and justi cation. Moreover, the notion of disagreement corresponds to a set of epistemic oppositions between agents. The result is a non-standard theory of opposition for many-valued logics, rendering total and partial disagreement in terms of epistemic negation and (...) semi-negations. (shrink)

Condorcet's famous jury theorem reaches an optimistic conclusion on the correctness of majority decisions, based on two controversial premises about voters: they are competent and vote independently, in a technical sense. I carefully analyse these premises and show that: whether a premise is justi…ed depends on the notion of probability considered; none of the notions renders both premises simultaneously justi…ed. Under the perhaps most interesting notions, the independence assumption should be weakened.

It is clear that beliefs can be assessed both as to their justification and their rationality. What is not as clear, however, is how the rationality and justification of belief relate to one another. Stewart Cohen has stumped for the popular proposal that rationality and justification come to the same thing, that rational beliefs just are justified beliefs, supporting his view by arguing that ‘justified belief’ and ‘rational belief’ are synonymous. In this paper, I will give reason to think that (...) Cohen’s argument is spurious. I will show that ‘rational’ and ‘justified’ occupy two distinct semantic categories – ‘rational’ is an absolute gradable adjective and ‘justified’ is a relative gradable adjective – telling against the thought that ‘rational belief’ and ‘justified belief’ are synonymous. I will then argue that the burden of proof is on those who would equate rationality and justification, making the case that those who hold this prominent position face the difficulty of explaining how rationality and justification come to the same thing even though ‘rational’ and ‘justified’ are not synonymous. (shrink)

Most artworks—or at least most among those standardly subject to philosophical scrutiny—appear to be singular, stand-alone works. However, some artworks (indeed, perhaps a good many) are by contrast best viewed in terms of some larger grouping or ordering of artworks. i.e., as a series. The operative art-theoretic notion of series in which I am interested here is that of an individual and distinct artwork that is itself non-trivially composed of a non-trivial sequence of artworks (e.g., Walter de Maria’s Statement Series, (...) Krzysztof Kieslowski’s Three Colors)—as opposed to an art-historically informative or art critically productive thematically, stylistically, or formally unified ordering or grouping of individual and distinct artworks within an artist’s larger body of work (e.g., Kiki Smith’s Blue Print series, Dan Flavin’s Monuments to V. Tatlin series, Jeff Koons’ Made in Heaven series, Robert Rauschenberg’s Tribute 21 series). Given this, my aim is simply to sketch a minimal descriptive and classificatory framework for serial art within which certain informative distinctions may be made and further philosophical enquiry may productively take place. (shrink)

L'article s'intéresse aux obstacles épistémologiques qui empêchèrent Wittgenstein d'admettre l'idée moderne de logique modale et, en particulier, les logiques d'attitudes propositionnelles. Tout en proposant un aperçu rétrospectif de la logique des modalités épistémiques, nous verrons que ces obstacles reposent avant tout sur la nature de l'espace logique présenté dans le Tractatus Logico-Philosophicus et le statut métaphysique du sujet. Des passages éclairants seront rappelés pour justi.