Suppose you intend now to φ at some future time t. However, when t has come you do not φ. Something has gone wrong. This failing is not just a causal but also a normative failing. This raises the question how to characterize this failing. I discuss three alternative views. On the first view, the fact that you do not execute your intention to φ is blameworthy only if the balance of reasons pointed to φ-ing. The fact that you intended (...) to φ does not add to the reasons for φ-ing at t. On the second view, the fact that you do not execute your intention to φ is blameworthy because you violate a requirement of rationality. Both these views have in common that they deny that intending to φ at t creates a reason to φ at t. The third alternative, the one I defend, claims that you often create reasons to φ by intending to φ. (shrink)

According to a widespread, broadly Humean consensus, desires and other conative attitudes seem as such to be free from any normative constraints of rationality. However, rational subjects are also required to be attitude-coherent in ways that prima facie hold sway for desire. I here examine the plausibility of this idea by proposing several principlesfor coherent desire. These principles parallel principles for coherent belief and can be used to make a case for a kind of purely conative normativity. I consider several (...) objections to a principle for consistent desiring and reply to them. I conclude that, if attitude-coherence is a mark of rationality, the broadly Humean consensus must be rejected. (shrink)

This paper investigates the relation between consequentialism, as conceived of in moral theory, and standard expected utility theory. I argue that there is a close connection between the two. I show furthermore that consequentialism is not neutral with regard to the values of the agent. Consequentialism, as well as standard expected utility theory, is incompatible with the recognition of considerations that depend on what could have been the case, such as regret and disappointment. I conclude that consequentialism should be rejected (...) as a principle of rational choice and that there are reasons to doubt its plausibility in the realm of moral theory. Moreover, this is a reason to doubt whether standard expected utility theory is a plausible theory of rational choice. (shrink)

The aim of this paper is to evaluate etiological accounts of functions for the domain of technical artefacts. Etiological theories ascribe functions to items on the basis of the causal histories of those items; they apply relatively straightforwardly to the biological domain, in which neo-Darwinian evolutionary theory provides a well-developed and generally accepted background for describing the causal histories of biological items. Yet there is no well-developed and generally accepted theory for describing the causal history of artefacts, so the application (...) of etiological theories to the technical domain is hardly straightforward. In this paper we consider the transposition of etiological theories in general from the biological to the technical domain. We argue that a number of etiological theories that appear defensible for biology become untenable for technology. We illustrate our argument by showing that the standard etiological accounts of Neander and Millikan, and some recent attempts to improve on them, provide examples of such untenable theories. 1 Introduction 2 Desiderata for theories of functions 3 Etiological theories in general 3.1 Common core and divergent aims 3.2 Reproduction versus non-reproduction etiological theories 3.3 Intentionalist versus non-intentionalist etiological theories 4 Problems for etiological theories in the technical domain 5 The failure of existing reproduction theories 6 The failure of existing non-reproduction theories 7 Improving reproduction by hybridisation 8 Conclusions. (shrink)

“How can I, who am thinking about the entire, centerless universe, be anything so specific as this: this measly creature existing in a tiny morsel of space and time?” This metaphysically self-deprecating question, posed by Thomas Nagel, holds an insight into the nature of personhood and the ordinary ways we value it, in others and in ourselves. I articulate that insight and apply it to the phenomena of friendship, companionship, sexuality, solitude, and love. Although love comes in many forms, I (...) say, it always involves a sense of wonder at a finite creature thinking infinite thoughts. (shrink)

Although the change of beliefs in the face of new information has been widely studied with some success, the revision of other mental states has received little attention from the theoretical perspective. In particular, intentions are widely recognised as being a key attitude for rational agents, and while several formal theories of intention have been proposed in the literature, the logic of intention revision has been hardly considered. There are several reasons for this: perhaps most importantly, intentions are very closely (...) connected with other mental states—in particular, beliefs about the future and the abilities of the agent. So, we cannot study them in isolation. We must consider the interplay between intention revision and the revision of other mental states, which complicates the picture considerably. In this paper, we present some first steps towards a theory of intention revision. We develop a simple model of an agent’s mental states, and define intention revision operators. Using this model, we develop a logic of intention dynamics, and then investigate some of its properties. (shrink)

I raise three puzzles concerning self-deception: (i) a conceptual paradox, (ii) a dilemma about how to understand human cognitive evolution, and (iii) a tension between the fact of self-deception and Davidson’s interpretive view. I advance solutions to the first two and lay a groundwork for addressing the third. The capacity for self-deception, I argue, is a spandrel, in Gould’s and Lewontin’s sense, of other mental traits, i.e., a structural byproduct. The irony is that the mental traits of which self-deception is (...) a spandrel/byproduct are themselves rational. (shrink)

Discussions of Ryle’s regress argument against the “intellectualist legend” have largely focused on whether it is effective against a certain view about knowledge how, namely, the view that knowledge how is a species of propositional knowledge. This is understandable, as this is how Ryle himself framed the issue. Nevertheless, this focus has tended to obscure some different concerns which are no less pressing—either for Ryle or for us today. More specifically, I argue that a version of Ryle’s regress confronts any (...) view according to which the intelligence manifested in action must be inherited from purely inner mental causes. I recommend an alternative account of the metaphysics of intelligent action, which avoids this commitment. (shrink)

Does rationality require us to take the means to our ends? Intuitively, it seems clear that it does. And yet it has proven difficult to explain why this should be so: after all, if one is pursuing an end that one has decisive reason not to pursue, the balance of reasons will presumably speak against one's taking the means necessary to bring that end about. In this paper I propose a novel account of the instrumental requirement which addresses this problem. (...) On the view I develop, the instrumental requirement is normative not because agents have reasons to comply with it, but because it is a normative standard intrinsic to intentional action—i.e., it is a standard that partly spells out what it is to exercise one's agency well. (shrink)

I propose a minimal account of authorship that specifies the fundamental nature of the author-relation and its minimal domain composition in terms of a three-place causal-intentional relation holding between agents and sort-relative works. I contrast my account with the minimal account tacitly held by most authorship theories, which is a two-place relation holding between agents and works simpliciter. I claim that only my view can ground productive and informative principled distincitons between collective production and collective authorship.

Mind reading (i.e. the ability to infer the mental state of another agent) is taken to be the main cognitive ability required to share an intention and to collaborate. In this paper, I argue that another cognitive ability is also necessary to collaborate: representing others’ and ones’ own goals from a third-person perspective (other-centred or allocentric representation of goals). I argue that allocentric mind reading enables the cognitive ability of goal adoption, i.e. having the goal that another agent’s achieve p (...) because and as long as another agent has that goal that p. Having clarified the relevance of mutual goal adoption for acting jointly, I argue that when an intention is shared between several agents, each individual has an intention in favour of the joint action and one in favour of a joint mode of reasoning. This mode of reasoning is allocentric reasoning. Finally, I elaborate on the consequences of this view for the scientific study of human collaboration. (shrink)

Chimpanzees and humans are close evolutionary relatives who behave in many of the same ways based on a similar type of agentive organization. To what degree do they experience the world in similar ways as well? Using contemporary research in evolutionarily biology and animal cognition, I explicitly compare the kinds of experience the two species of capable of having. I conclude that chimpanzees’ experience of the world, their experiential niche as I call it, is: intentional in basically the same way (...) as humans’; rational in the sense that it is self-critical and operates with logically structured causal and intentional inferences; but not normative at all in that it does not operate with “objective” evaluative standards. Scientific data do not answer philosophical questions, but they provide rich raw material for scientists and philosophers alike to reflect on and clarify fundamental psychological concepts. (shrink)

There are two perspectives available from which to understand an agent's intention in acting. The first is the perspective of the acting agent: what did she take to be her end, and the means necessary to achieve that end? The other is a third person perspective that is attentive to causal or conceptual relations: was some causal outcome of the agent's action sufficiently close, or so conceptually related, to what the agent did that it should be considered part of her (...) intention? Recent goods based views in ethics are divided as to whether only the first person perspective, or a mix of both perspectives, are necessary to understand intention and action. But resolution of the issue is necessary if goods based views are to be able to deploy to principle of double effect; for that principle requires an account of how to distinguish what is genuinely a matter of intention in human action from what is not. I argue that the pure first person account is better than the mixed account. (shrink)

On the classical instrumental view, practical reason is an all-things-considered enterprise, concerned not merely with identifying and evaluating appropriate means to the realization of ends construed as uncriticizable, but also with coordinating achievement of their sum. The concept of a totality of ranked concerns is the cornerstone of the theory of utility. This paper discusses some of the ways that practical reasoning, on the ground, is not instrumental in this sense. The paper will demonstrate that some of what goes on (...) by way of practical reasoning on the ground involves a certain simple inference schema—to be called “imitative reasoning”—that involves mobilization of what has been alternately referred to as archetypes, scripts, stereotypes and schemas including most importantly self-schemas or self-concepts. Imitative reasoning, as the paper will argue, is especially hostile to deliberations that involve the sorts of tradeoffs that applications of utility theory routinely advise. It is therefore no expression or realization, however imperfect, of the notion of maximization. What is more, this framework routinely evokes as authoritative the norms of privilege, however removed from or irrelevant to the matter at hand, which might be as simple as where to go for dinner. For it is the basis of—among other things—class and race consciousness. Furthermore, it is highly subject to manipulation by the unscrupulous; such as, for example, by those who market consumer goods, especially to children. For this form of reasoning is employed so as to protect or enhance self-concepts: imitative reasoning is a form of motivated reasoning. Laying it out in schema form will shed light on the sort of reasoning processes that transpire in many cases of cognitive dissonance reduction. (shrink)

This paper argues that the principles of instrumental rationality apply primarily to extended action through time. Most philosophers assume that rational requirements and principles govern in the first instance momentary mental states, as opposed to governing extended intentional actions directly. In the case of instrumental rationality, the relevant mental states or attitudes would typically be preferences, decisions, or intentions. In fact, even those who recognize the extended nature of our agency still assume that rational requirements apply primarily to mental states (...) at a moment in time. Such views try to do justice to the extended nature of our agency by postulating rational requirements that apply in the first instance to plans, policies, and intentions more generally. The paper focuses on the central case of requirements and reasons governing the reconsideration of intentions and argues that these requirements or reasons are either superfluous or invalid.I argue that a proper conception of instrumental reasoning that applies directly to actions turn out to have surprising consequences. In fact, this conception allows us to see that policies, projects and the like are best understood as instances of extended actions, and that the instrumental requirements that apply to projects and policies are exactly the same as the instrumental requirements that apply to ordinary extended actions. Finally, I argue that the resulting theory of instrumental rationality is a significant improvement over theories that rely on principles governing intentions. (shrink)

Inquiry, Volume 57, Issue 3, Page 384-411, June 2014.

In this paper I propose minimal criteria for a successful theory of the mechanisms of motivation, and argue that extant philosophical accounts fail to meet them. Further, I argue that a predictive processing framework gives us the theoretical power to meet these criteria, and thus ought to be preferred over existing theories. The argument proceeds as follows—motivational mental states are generally understood as mental states with the power to initiate, guide, and control action, though few existing theories of motivation explicitly (...) detail how they are meant to explain these functions. I survey two contemporary theories of motivational mental states, due to Wayne Wu and Bence Nanay, and argue that they fail to satisfactorily explain one or more of these functions. Nevertheless, I argue that together, they are capable of giving a strong account of the control function, which competing theories ought to preserve. I then go on to argue that what I call the ‘predictive theory’ of motivational mental states, which makes use of the notion of active inference, is able to explain all three of the key functions and preserves the central insights of Wu and Nanay on control. It thus represents a significant step forward in the contemporary debate. (shrink)

Individualists claim that collective obligations are reducible to the individual obligations of the collective’s members. Collectivists deny this. We set out to discover who is right by way of a deontic logic of collective action that models collective actions, abilities, obligations, and their interrelations. On the basis of our formal analysis, we argue that when assessing the obligations of an individual agent, we need to distinguish individual obligations from member obligations. If a collective has a collective obligation to bring about (...) a particular state of affairs, then it might be that no individual in the collective has an individual obligation to bring about that state of affairs. What follows from a collective obligation is that each member of the collective has a member obligation to help ensure that the collective fulfills its collective obligation. In conclusion, we argue that our formal analysis supports collectivism. (shrink)

This essay argues that culpability and responsibility are independent notions, even though some of the same facts make us both responsible and culpable. Responsibility for one’s conduct is grounded in the strength of the agential connection between oneself and one’s conduct. Culpability for one’s conduct is the vices that give rise to that conduct. It then argues that responsibility and culpability for causing a threat are each grounds of liability to defensive harm independent of the other.

A number of practices at the end of life can causally contribute to diminished consciousness in dying patients. Despite overlapping meanings and a confusing plethora of names in the published literature, this article distinguishes three types of clinically and ethically distinct practices: double-effect sedation, parsimonious direct sedation, and sedation to unconsciousness and death. After exploring the concept of suffering, the value of consciousness, the philosophy of therapy, the ethical importance of intention, and the rule of double effect, these three practices (...) are defined clearly and evaluated ethically. It is concluded that, if one is opposed to euthanasia and assisted suicide, double-effect sedation can frequently be ethically justified, that parsimonious direct sedation can be ethically justified only in extremely rare circumstances in which symptoms have already completely consumed the patient’s consciousness, and that sedation to unconsciousness and death is never justifiable. The special case of sedation for existential suffering is also considered and rejected. (shrink)

This article is a critical examination of Harry Frankfurt's view of reasons. Frankfurt has argued in a number of recent books for the view which holds that all practical reasons are a function of what we love. This article examines Frankfurt's key argument for this claim. It uses the analogy of a similar argument in the domain of epistemic reasons to show where Frankfurt's argument fails. It also argues that there are a number of plausible views about practical reasons that (...) are available for us as a result. (shrink)

According to a guiding idea in metaethics, there is a necessary link between the concept of normative reasons and the concept of practical rationality. This notion brings up two issues: The exact nature of this link, and the nature of rationality. With regard to the first issue, the debate is dominated by a certain standard claim. With regard to the second issue, the debate is dominated by what I will refer to as ‘subjectivism’ and ‘objectivism’ about rationality, where the latter (...) is assumed to be a necessary condition for the existence of categorical reasons. In this paper, it is argued that subjectivism is able capture an ordinary, non-technical, sense of ‘rational’ whereas objectivism is not. The basic reason is that objectivism fails to account for the essential connection between rationality, malfunctioning, and rational criticism. This means that we face a puzzle: While objectivism appears to be a necessary condition for the existence of categorical reasons, it fails to capture a central sense of ‘rational’. It is finally argued that this puzzle can be solved by abandoning the standard claim about the link between reasons and rationality. (shrink)

In his recently published John Locke Lectures, Saul Kripke attempts to capture Keith Donnellan’s referential/attributive distinction for definite descriptions using a distinction between general and specific intentions. I argue that although Kripke’s own way of capturing the referential/attributive distinction is inadequate, we can use general and specific intentions to successfully capture the distinction if we also distinguish between primary and secondary intentions. An attributive use is characterized by the fact that the general intention is either the primary or only designative (...) intention, whereas a referential use occurs when a specific intention is either the primary or only designative intention. Along the way, accounts of the referential/attributive distinction offered by John Searle and by Kepa Korta and John Perry come in for criticism as well, and we’ll also discuss Michael O’Rourke’s dual-aspect uses of definite descriptions. (shrink)

I show how a conversational process that takes simple, intuitively meaningful steps may be understood as a sophisticated computation that derives the richly detailed, complex representations implicit in our knowledge of language. To develop the account, I argue that natural language is structured in a way that lets us formalize grammatical knowledge precisely in terms of rich primitives of interpretation. Primitives of interpretation can be correctly viewed intentionally, as explanations of our choices of linguistic actions; the model therefore fits our (...) intuitions about meaning in conversation. Nevertheless, interpretations for complex utterances can be built from these primitives by simple operations of grammatical derivation. In bridging analyses of meaning at semantic and symbol‐processing levels, this account underscores the fundamental place for computation in the cognitive science of language use. (shrink)

Those who are risk averse with respect to money, and thus turn down some gambles with positive monetary expectations, are nevertheless often willing to accept bundles involving multiple such gambles. Therefore, it might seem that such people should become more willing to accept a risky but favourable gamble if they put it in context with the collection of gambles that they predict they will be faced with in the future. However, it turns out that when a risk averse person adopts (...) the long-term perspective, she faces a decision-problem that can be analysed as a noncooperative game between different “time-slices” of herself, where it is in the interest of each time-slice (given its prediction about other slices) to turn down the gamble with which it is faced. Hence, even if a risk averse but rational person manages to take the long-term perspective, she will, in the absence of what Hardin called “mutual coercion”, end up in a situation analogous to the “tragedy of the commons”. (shrink)

What is required for one thing to be a reason for another? Must the reason, more precisely, be or involve a principle? In this essay I target the idea that justification via reasons of one's beliefs (e.g., epistemic or moral) requires that the 'justifying reasons' be or involve (substantive and significant) principles. I identify and explore some potential sources of a principles requirement, and conclude that none of them (i.e., the normative function of reasons, the abstract structure of reasons, the (...) universalizability constraint on [moral] reasons, and even the pragmatic considerations that attenuate 'real-world' reason-giving) mandate that reasons be principles. I then explore implications of this conclusion, and note especially the resultant and paradoxical permissibility of justifying reasons that manage to be lawlike (a sine qua non for justifying reasons) even while consisting of highly-detailed and situation-specific proposition sets, e.g., novel-length narratives. (shrink)

Intellectualists hold that knowledge-how is a species of knowledge-that, and consequently that the knowledge involved in skill is propositional. In support of this view, the intentional action argument holds that since skills manifest in intentional action and since intentional action necessarily depends on propositional knowledge, skills necessarily depend on propositional knowledge. We challenge this argument, and suggest that instructive representations, as opposed to propositional attitudes, can better account for an agent’s reasons for action. While a propositional-causal theory of action, according (...) to which intentional action must be causally produced “in the right way” by an agent’s proposition-involving reasons, has long held sway, we draw on Elizabeth Anscombe’s insights offer a path toward an alternative theory of action. In so doing, we reject the implicitly Cartesian conception of knowledge at the core of the intentional action argument, while hanging on to the idea that mental states are representations of a certain kind. Our argument provides theoretical support for anti-intellectualism by equipping philosophers with an account of non-propositional, practical content. (shrink)

My aim in this paper is to lay out a number of theses which are very widely held in contemporary philosophy of language and linguistics, and to argue that, given some extra theses for which I’ll argue, they are inconsistent. Some of this will involve going through some very well-trodden territory—my hope is that presenting this familiar ground in the way that I do will help to make plain the problem that I aim to identify.

Direct Perception is the view that we can see others' mental states, i.e. that we perceive others' mental states with the same immediacy and directness that we perceive ordinary objects in the world. I evaluate Direct Perception by considering whether we can see intentions, a particularly promising candidate for Direct Perception. I argue that the view equivocates on the notion of intention. Disambiguating the Direct Perception claim reveals a troubling dilemma for the view: either it is banal or highly implausible.

This paper concerns a recently discovered, puzzling asymmetry in judgments of whether an action is intentional or not (Knobe, Philosophical Psychology 16:309–324, 2003a ; Analysis 63:190–193, b ). We report new data replicating the asymmetry in the context of scenarios wherein an agent achieves an amoral or immoral goal due to luck. Participants’ justifications of their judgments of the intentionality of the agent’s action indicate that two distinct folk concepts of intentional action played a role in their judgments. When viewed (...) from this perspective, the puzzle disappears, although the asymmetry remains. (shrink)

In Reasons Without Persons, Brian Hedden argues that a theory of rationality need not provide diachronic norms for reasoning, since we can explain all we need to explain about rationality using purely synchronic norms. This article argues that a theory of rationality should contain at least one diachronic norm for reasoning, namely a norm to fill in the details of one's coarse-grained or partial plans. It also explores a possible synchronic approach to this aspect of rationality.

What is the normative role of knowledge? I argue that knowledge plays an important role as a norm of assertion and action, which is explained and unified by its more fundamental role as a norm of belief. Moreover, I propose a distinctive account of what this normative role consists in. I argue that knowledge is the aim of belief, which sets a normative standard of correctness and a corresponding normative standard of justification. According to my proposal, it is correct to (...) believe, assert and act on a proposition if and only if one is in a position to know it, but one has justification to believe, assert and act on a proposition if and only if one has justification to believe that one is in a position to know it. (shrink)

The consensus in the philosophical literature on joint action is that, sometimes at least, when agents intentionally jointly φ, this is explicable by their intending that they φ, for a period of time prior to their φ-ing. If this be granted, it poses a dilemma. For agents who so intend either severally or jointly intend that they φ. The first option is ruled out by two stipulations that we may consistently make: (i) that at least one of the agents non-akratically (...) believes that, all things considered, the agents ought not to φ, and (ii) that an agent is akratic, if she intends a thing that she believes, all things considered, ought not to be done. But the second option seems to entail the existence of a mental state with multiple subjects, which, in turn, seems to commit us to the existence of a group mind modified by that state: an incautious posit to say the least. I resolve the dilemma by noting that ‘They jointly intend’ is indeterminate between ‘They intend, jointly’, which does indeed entail that some mental state is an intention with multiple subjects, and ‘Jointly, they intend’, which entails a weaker claim, viz. that some mental state or states is an intention with multiple subjects. I then sketch an account of how a plurality of mental states, distributed among subjects, might, collectively, do service as their intention that they φ. It makes novel use of notions of participation and of doing a thing jointly with others. A corollary is that either intentions are not attitudes towards propositions, or propositions are individuated more finely than is often assumed. (shrink)

An oft-rehearsed objection to the claim that an intention can give one reasons is that if an intention could give us reasons that would allow an agent to bootstrap herself into having a reason where she previously lacked one. Such bootstrapping is utterly implausible. So, intentions to φ cannot be reasons to φ. Call this the bootstrapping objection against intentions being reasons. This essay considers four separate interpretations of this argument and finds they all fail to establish that non-akratic, nonevil, (...) and deliberatively sound intentions cannot be reasons. The first argument is the argument from evil intentions, the second is the argument from akratic intentions, the third is the argument from errors in deliberation, and the last is what I call the ‘wizardry’ argument. This ‘argument’, put forward most clearly by John Broome, claims that intentions are so insubstantial that were they on their own reasons for action, that would amount to creating something out of nothing and that is impossible. The essay argues that the claim that intentions are insubstantial is too strong a premise to put forward without argument. For there are other attitudes that are on their own sufficient to generate reasons, such as loving attitudes. The essay then argues that the bootstrapping objection’s status as dogma in the philosophy of action has led to insufficient attention being paid to the entirely reasonable question of whether intentions are sufficiently like other reason-giving attitudes, such as loving and valuing. It may turn out that, just as loving someone can give the loving person a reason to act in a certain, so too can intending to do something give someone a reason to act in a certain way, but we cannot effectively engage this question without first giving up our commitment to the bootstrapping objection as a central “insight” in philosophy of action. The essay concludes by proposing two research questions that are opened up by the abandonment of the bootstrapping objection as dogma, and proposes that we turn our philosophical attentions to those questions. (shrink)

Intentions have been a central subject of research since contemporary philosophy of action emerged in the middle of the twentieth century. For almost that entire period, the approach has been to treat the study of intentions as separate from the study of morality. This essay offers a brief overview of that history and then suggests some ways forward, as exemplified by the essays collected in this volume.

A phenomenology of action is outlined, analyzing the structure of volition, kinesthesis, and perception in the experience of action, and, finally, the experience of embodiment in action. The intentionality of action is contrasted with that of thought and perception in regard to the role of the body, and the relations between an action, the experience of acting, and the context of the action are specified.

Active inference offers a unified theory of perception, learning, and decision-making at computational and neural levels of description. In this article, we address the worry that active inference may be in tension with the belief–desire–intention model within folk psychology because it does not include terms for desires at the mathematical level of description. To resolve this concern, we first provide a brief review of the historical progression from predictive coding to active inference, enabling us to distinguish between active inference formulations (...) of motor control and active inference formulations of decision processes. We then show that, despite a superficial tension when viewed at the mathematical level of description, the active inference formalism contains terms that are readily identifiable as encoding both the objects of desire and the strength of desire at the psychological level of description. We demonstrate this with simple simulations of an active inference agent motivated to leave a dark room for different reasons. Despite their consistency, we further show how active inference may increase the granularity of folk-psychological descriptions by highlighting distinctions between drives to seek information versus reward—and how it may also offer more precise, quantitative folk-psychological predictions. Finally, we consider how the implicitly conative components of active inference may have partial analogues in other systems describable by the broader free energy principle to which it conforms. (shrink)

People walk, build, paint and otherwise act together with a purpose in myriad ways. What is the relation between the actions people perform in acting together with a purpose and the outcome, or outcomes, to which their actions are directed? We argue that fully characterising this relation will require appeal not only to intention, knowledge and other familiar philosophical paraphernalia but also to another kind of representation involved in preparing and executing actions, namely motor representation. If we are right, motor (...) representation plays a central role in the story of acting together. (shrink)

Intentions are an important concept in Artificial Intelligence and Cognitive Science. We present a formal theory of intentions and beliefs based on Discourse Representation Theory that captures many of their important logical properties. Unlike possible worlds approaches, this theory does not assume that agents are perfect reasoners, and gives a realistic view of their internal architecture; unlike most representational approaches, it has an objective semantics, and does not rely on an ad hoc labeling of the internal states of agents. We (...) describe a minimal logic for intentions and beliefs that is sound and complete relative to our semantics. We discuss several additional axioms, and the constraints on the models that validate them. (shrink)

This paper develops a novel, functionalist, unified account of the epistemic normativity of reasoning. On this view, epistemic norms drop out of epistemic functions. I argue that practical reasoning serves a prudential function of generating prudentially permissible action, and the epistemic function of generating knowledge of what one ought to do. This picture, if right, goes a long way towards normatively divorcing action and practical reasoning. At the same time, it unifies reasoning epistemically: practical and theoretical reasoning will turn out (...) to be governed by the same epistemic norm—knowledge—in virtue of serving the same epistemic function: generating knowledge of the conclusion. (shrink)

O propósito desse artigo é fornecer um tratamento formal para um tipo de ação até o momento negligenciada nas lógicas modais filosóficas da ação: ação em plano. Ao fazer isso nós seguimos a abordagem padrão nas lógicas modais da ação exemplificados pelos trabalhos de Belnap, Chellas and Pörn. Como nós acreditamos que existe uma relação forte entre plano, tempo e indeterminismo, nós usamos a teoria do tempo ramificado para investigar as características básicas da ação em plano. Além de introduzir uma (...) semântica do tempo ramificado, nós também apresentamos um cálculo correto e completo com relação a essa semântica. DOI:10.5007/1808-1711.2010v14n3p421. (shrink)