Intention-Based Reasoning

An important module in the Belief-Desire-Intention architecture for artificial agents (which builds on Michael Bratman's work in the philosophy of action) focuses on the task of intention reconsideration. The theoretical task is to formulate principles governing when an agent ought to undo a prior committed intention and reopen deliberation. Extant proposals for such a principle, if sufficiently detailed, are either too task-specific or too computationally demanding. I propose that an agent ought to reconsider an intention whenever some incompatible prospect is (...) sufficiently valuable along some dimension that can be assessed at zero or near-zero computational cost. (shrink)

Doxasticism is the thesis that intention is or involves belief in the forthcoming action (Velleman, Harman). Supporters claim that it is only by accepting that thesis that we can explain a wide array of important phenomena, including the special knowledge we have of intentional action, the roles intention plays in facilitating coordination, and the norms of rationality for intention. Others argue that the thesis is subject to counterexample (Davidson, Bratman). Yet some others contend that the thesis can be reformulated in (...) a way that avoids such counterexamples and preserves its explanatory significance (Pears, Setiya). Their suggestion is that we view intention as involving partial –rather than full—belief. I argue that while the move from full to partial doxasticism helps to accommodate such counterexamples, it does so in a way that undermines the ability of the resulting view to explain the coordinating roles of and rationality norms for intention. (shrink)

Intention plays a central role in coordinating action. It does so, it is commonly thought, by allowing one to plan further actions for the future on the basis of the belief that it will be executed. Doxasticists about intention (Harman, Velleman) conclude from this that accounting for this role of intention requires accepting the thesis that intention involves belief. Conativists (Bratman, Brunero, Mele) reject that conclusion. I argue that Doxasticists are right in calling attention to the existence of a cognitive (...) aspect to intention-based coordination, but that such an aspect is better understood in terms of the attitude of reliance than of belief. I also argue that an appeal to reliance affords Conativists with useful resources for explaining that aspect of intention-based coordination in a way that is compatible with their rejection of the aforementioned thesis. (shrink)

Enkratic reasoning—reasoning from believing that you ought to do something to an intention to do that thing—seems good. But there is a puzzle about how it could be. Good reasoning preserves correctness, other things equal. But enkratic reasoning does not preserve correctness. This is because what you ought to do depends on your epistemic position, but what it is correct to intend does not. In this paper, I motivate these claims and thus show that there is a puzzle. I then (...) argue that the best solution is to deny that correctness is always independent of your epistemic position. As I explain, a notable upshot is that a central epistemic norm directs us to believe, not simply what is true, but what we are in a position to know. (shrink)

L’opera più importante per la filosofia dell’azione dopo l’Etica di Aristotele: così Donald Davidson ha definito il libro di Gertrude Elizabeth Margaret Anscombe, Intention, che Elisa Grimi ci presenta oggi attraverso questa preziosa guida alla lettura, il primo testo di questo genere in lingua italiana. dalla Prefazione di Cyrille Michon. Che cosa sia un’intenzione, quale sia il ruolo che essa svolge all'interno di un’azione, se vi si possa trovare traccia della vera intenzione del soggetto guardando l’azione che compie: questi e (...) molti altri sono gli interrogativi ai quali Anscombe tenta di rispondere. Intention non è un’opera di etica o di politica ma si muove su uno sfondo etico o politico, uno sfondo da cui lo scritto trae la propria forza e il proprio spirito. L’intenzione infatti è capace di modellare l’azione e generare una storia. Come un mazzo di fiori scelto ad hoc è capace di suscitare emozioni e sentimenti e, allo stesso tempo, custodire la promessa di una storia a venire. (shrink)

It’s possible to accept or to reject a promise. According to a new proposal by Abraham Roth, accepting a promise involves intending that the promisee perform the promised action. According to Roth, this view is supported by rational symmetries between promissory acceptance and intention. Here, I show how these symmetries actually generate two problems for the view.

Suppose that you intend to go to the theater. Are you therein intending the unconditional proposition that you go to the theater? That would seem to be deeply irrational; after all, you surely do not intend to go if, for instance, in the next instant an earthquake is going to devastate the city. What we intend we do not intend ‘no matter what,’ it is often said. But if so—how can anyone ever rationally intend simply to perform an action of (...) a certain kind? In response to the puzzle, a ‘conditionality’ view of intention has emerged: the contents of everyday intentions are claimed to be fraught with hidden conditional clauses. The paper argues that such claims are radically unmotivated: even unconditional intentions have only limited inferential import and hence contrast sharply with a ‘no matter what’ stance. The point is established by examining relevant patterns of reasoning from unconditional to conditional intentions. (shrink)

Some of the things we do intentionally we do halfheartedly. I develop and defend an account of halfheartedness with respect to action on which one is halfhearted with respect to an action A if one’s overall motivation to A is weak. This requires getting clear on what it is to have some level of overall motivation with respect to an action, and on what it means to say one’s overall motivation is weak or strong. After developing this account, I defend (...) the claim that one key functional expression of halfhearted action is the possession of impaired control over the action in question. Finally, I elucidate a puzzle that sometimes arises with respect to halfhearted action. The puzzle arises when an agent’s commitment in acting conflicts with an agent’s acceptance of poor performance. (shrink)

The reasons for which I act are normally my reasons; I represent goal states and the means to attaining them, and these guide me in action. Can your reason ever be the reason why I act? If I haven’t yet taken up your reason and made it mine by representing it for myself, then it may seem mysterious how this could be possible. Nevertheless, the paper argues that sometimes one is entitled to another’s reason and that what one does is (...) to be explained in terms of it. The case for this draws on aspects of the interplay between reasons and intentions in individual agency that have not received the attention they deserve. The paper closes by exploring the limits of interpersonal entitlement to reasons by formulating a hypothesis about which reasons one might be entitled to, and by considering how defeaters can undermine entitlement. (shrink)

Accepting a promise is normatively significant in that it helps to secure promissory obligation. But what is it for B to accept A’s promise to φ? It is in part for B to intend A’s φ-ing. Thinking of acceptance in this way allows us to appeal to the distinctive role of intentions in practical reasoning and action to better understand the agency exercised by the promisee. The proposal also accounts for rational constraints on acceptance, and the so-called directedness of promissory (...) obligation. Finally, the proposal, conjoined with Cognitivism about intentions, addresses recent criticism of Scanlon’s expectation-based view of promissory obligation. (shrink)

There is a puzzle about the very possibility of foreseen but unintended side effects, and solving this puzzle requires us to revise our basic picture of the structure of practical deliberation. The puzzle is that, while it seems that we can rationally foresee, but not intend, bringing about foreseen side effects, it also seems that we rationally must decide to bring about foreseen side effects and that we intend to do whatever we decide to do. I propose solving this puzzle (...) by rejecting the idea that we intend to do whatever we decide to do. My solution involves taking account of the underappreciated role that qualified intentions play in deliberation. I also argue that this solution fares better than those that instead reject the idea that we rationally must decide to bring about foreseen side effects, for these solutions are committed to rejecting the even more compelling idea that decisions rationally serve as the conclusions of practical deliberation. (shrink)

A state‐based reason for one to intend to perform an action F is a reason for one to intend to F which is not a reason for one to F. Are there any state‐based reasons to intend? According to the Explanatory Argument, the answer is no, because state‐based reasons do not satisfy a certain explanatory constraint. I argue that whether or not the constraint is correct, the Explanatory Argument is unsound, because state‐based reasons do satisfy the constraint. The considerations that (...) undermine the Explanatory Argument also generate a strong, positive case for the existence of state‐based reasons to intend. (shrink)

We present a modal logic called (logic of intention and attempt) in which we can reason about intention dynamics and intentional action execution. By exploiting the expressive power of , we provide a formal analysis of the relation between intention and action and highlight the pivotal role of attempt in action execution. Besides, we deal with the problems of instrumental reasoning and intention persistence.

In this article we strive to provide a detailed and principled analysis of the role of beliefs in goal processing—that is, the cognitive transition that leads from a mere desire to a proper intention. The resulting model of belief-based goal processing has also relevant consequences for the analysis of intentions, and constitutes the necessary core of a constructive theory of intentions, i.e. a framework that not only analyzes what an intention is, but also explains how it becomes what it is. (...) We discuss similarities and differences between our approach and other standard accounts of intention, in particular Bratman’s planning theory. The aim here is to question and refine the conceptual foundations of many theories of intentional action: as a consequence, although our analysis is not formal in itself, it is ultimately meant to have deep consequences for formal models of intentional agency. (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)

A classic problem for artificial intelligence is to build a machine that imitates human behavior well enough to convince those who are interacting with it that it is another human being. One approach to this problem focuses on building machines that imitate internal psychological facets of human interaction, such as artificially intelligent agents that play grandmaster chess. Another approach focuses on building machines that imitate external psychological facets by building androids. The disparity between these approaches reflects a problem with both: (...) Artificial intelligence abstracts mentality from embodiment, while android science abstracts embodiment from mentality. This problem needs to be solved, if a sentient artificial entity that is indistinguishable from a human being, is to be constructed. One solution is to examine a fundamental human ability and context in which both the construction of internal cognitive models and an appropriate external social response are essential. This paper considers how reasoning with intent in the context of human vs. android strategic interaction may offer a psychological benchmark with which to evaluate the human-likeness of android strategic responses. Understanding how people reason with intent may offer a theoretical context in which to bridge the gap between the construction of sentient internal and external artificial agents. (shrink)

My concern here is to motivate some theses in the philosophy of mind concerning the interpersonal character of intentions. I will do so by investigating aspects of shared agency. The main point will be that when acting together with others one must be able to act directly on the intention of another or others in a way that is relevantly similar to the manner in which an agent acts on his or her own intentions. What exactly this means will become (...) clearer once we understand what it is to act directly on one’s own intentions. But I take it to be a fundamental assumption of the prevailing individualism of the theory of action—one at the core of its conception of the separateness of individuals—that one person cannot act directly on another’s intention. I agree that there is an important way in which we are or can be separate and autonomous thinkers and agents. But the way the individualist tries to capture this separateness is misguided. (shrink)

The intentions of others often enter into your practical reasoning, even when you’re acting on your own. Given all the agents around you, you’ll come to grief if what they’re up to is never a consideration in what you decide to do and how you do it. There are occasions, however, when the intentions of another figure in your practical reasoning in a particularly intimate and decisive fashion. I will speak of there being on such occasions a practical intersubjectivity of (...) intentions holding between you and the other individual. I will try to identify this practical intersubjectivity, and to take some preliminary steps toward giving a philosophical account of it. Occasions of practical intersubjectivity are usually those where individuals share agency, or do things jointly, such as when they walk together, kiss, or paint a house together. I will not assume that all instances of practical intersubjectivity are instances of shared agency. But the converse is true: any instance of shared agency involves a practical intersubjectivity holding between the participants. An account of shared agency is inadequate if it fails to handle practical intersubjectivity. The paper is structured as follows. In section 1, I present an example to illustrate this idea of practical intersubjectivity, at least as it appears in the context of shared agency. Practical intersubjectivity is a normative phenomenon, and it is on this basis that in section 2 I distinguish it from the mere coordination of intentions some have recognized as essential for shared activity. The task of section 3 is to show how practical intersubjectivity cannot be adequately described in terms of ordinary intentions familiar from the study of individual agency. Such approaches fail to handle the rational dynamics of intention revision when practical.. (shrink)

Crispin Wright has argued that our concept of intention is extension-determining, and that this explains why we are so good at knowing our intentions: it does so by subverting the idea that we detect them. This paper has two aims. The first is to make sense of Wright's claim that intention is extension-determining; this is achieved by comparing his position to that of analytic functionalism. The second is to show that it doesn't follow from this that we do not detect (...) our intentions. Wright has conflated two questions. Firstly, do we detect our intentions? Secondly do we detect the concept of intention itself? The extension-determining account returns a negative answer only to the second. (shrink)

This paper defends a cognitive-motivational account of intending against recent criticism by J. Garcia, connects intending with a number of other concepts important in the theory of action — including decison, volition, and planning — and explores some principles of intention transfer construed as counterparts of epistemic principles governing closure for belief and justification. Several routes to intention formation are described; the role of intentions in planning is examined; and a holistic conception of intention formation and change is stressed. The (...) proposed conception of intending as embodying at once a cognitive and a motivational commitment to action is thus shown to help in understanding both the explanation of action and the rationality of agents. (shrink)

Berkeley says that "the making and unmaking of ideas doth very properly denominate the mind active." What did Berkeley take as the paradigm of that making which denominates mind active? He speaks in the same passage of exciting "ideas in my mind at pleasure," of varying and shifting the scene "as oft as I see fit. It is no more than willing and straightway this or that idea arises in my fancy." This quite clearly takes human idea-making to be fantasizing. (...) But if this is the only sort of making we are capable of, it is a poor model for that divine making which Berkeley wishes to obtain by "reflecting on my own soul, heightening its powers, and removing its imperfections." Ideas of the fancy are not strong, lively, vivid, nor real for other minds. Has Berkeley any other, better, human model for the divine making? In his Commonplace Book, Berkeley notes tersely, "We move our legs ourselves." This suggests that our voluntary actions could be taken by Berkeley as ideas made by us. This would at least give him a human model for that divine responsibility for something real, something strong, vivid, lively, something which other minds have no choice but to see, when in broad daylight they open their eyes from the appropriate vantage point. (shrink)

This paper contributes to the foundations of a theory of rational choice for artificial agents in dynamic environments. Our work is developed within a theoretical framework, originally due to Bratman, that models resource-bounded agents as operating against the background of some current set of intentions, which helps to frame their subsequent reasoning. In contrast to the standard theory of rational choice, where options are evaluated in isolation, we therefore provide an analysis of situations in which the options presented to an (...) agent are evaluated against a background context provided by the agent’s current plans—commitments to future activities, which may themselves be only partially specified. The interactions between the new options and the background context can complicate the task of evaluating the option, rendering it either more or less desirable in context than it would have been in isolation.  2001 Elsevier Science B.V. All rights reserved. (shrink)

Intentions are central to entrepreneurial thinking and thus entrepreneurial action. We understand the critical antecedents of intentions, yet have not explored the pathways by which entrepreneurs arrive at this intent. In specific, how does a relatively stable measure of cognitive style influence nascent entrepreneurs' development of their intentionality? Not just differences in intentions but differences in the model itself. We examine the complex interaction of cognitive style with entrepreneurial intentions, finding evidence there are indeed multiple pathways to entrepreneurial intent. In (...) particular, cognitive style had a dramatic effect on the specification of the formal intentions model, the first evidence that the formal intentions model need not be universal. That is, we can argue vigorously that entrepreneurs' intentions can evolve along different pathways: Two entrepreneurs might arrive at the same intention but through very different processes, possibly only because they differ on cognitive style. Given this, we discuss practical implications for entrepreneurship pedagogy and research. (shrink)

In this paper, we present a meta-cognitive approach for dropping and reconsidering intentions, wherein concurrent actions and results are allowed, in the framework of the time-sensitive and contradiction-tolerant active logic.