In this article, I examine Michael Bratman’s account of stability in his planning theory of intention. Future-directed intentions should be stable, or appropriately resistant to change, over time. Bratman claims that the norm of stability governs both intentions and plans. The aim of this article is to critically enrich Bratman’s account of stability by introducing plasticity as an additional norm of planning. I construct plasticity as a kind of stability of intentions which supplements Bratman’s notion of “reasonable stability.” Unlike the (...) latter, plasticity applies mainly to cases in which plan states are abandoned without reconsideration. I focus on the intra-theoretical problems of PTI and elucidate: the distinction between future-directed intentions and plans, the conceptual difference between stability and inertia, which is only implicit in PTI, and the role of the environment of the planner, which has a vestigial role in Bratman’s work. I also defend my incorporation of pl... (shrink)

There has been considerable work on practical reasoning in artificial intelligence and also in philosophy. Typically, such reasoning includes premises regarding means–end relations. A clear semantics for such relations is needed in order to evaluate proposed syllogisms. In this paper, we provide a formal semantics for means–end relations, in particular for necessary and sufficient means–end relations. Our semantics includes a non-monotonic conditional operator, so that related practical reasoning is naturally defeasible. This work is primarily an exercise in conceptual analysis, aimed (...) at clarifying and eventually evaluating existing theories of practical reasoning (pending a similar analysis regarding desires, intentions and other relevant concepts). (shrink)

Planning organizes our actions and conditions our effective-ness. To understand this philosophical hint better, the author investigates and juxtaposes two important accounts in action theory. He discusses the concept of a plan proposed by Tadeusz Kotarbiński in his praxiology (theory of efcient action), and the so called “planning theory of intention” by Michael E. Bratman. The conceptual meeting of these two proposals helps to remove aws in Kotarbiński’s action theory, it also shows the way, in which we can enrich the (...) idea of plans in the frame-work of intentions. Generally, praxiology occurs to be still an important perspective in action theory, which particularly shows how we can improve our understanding of planning when confronted with infuentialcontemporary accounts. (shrink)

In this review article I refer to some of the most relevant recent publications in the field of practical rationality, mainly drawing on two new anthologies by Wallace and Millgram that contain the principal arguments in the current debate, and on new books and articles by Bittner, Dancy, Nida-Rümelin and Raz. The purpose of the article is to offer an overview of the relevant positions in the current debate, to clarify the main arguments against the belief-desire model, and to situate (...) some of the problems - e.g. what counts as a reason - within the wider field of practical rationality as a whole - e.g. how to argue about practical reasoning from the point of view of our self-understanding as autonomous agents. (shrink)

Sometimes a series of choices do not serve one's concerns well even though each choice in the series seems perfectly well suited to serving one's concerns. In such cases, one has a dynamic choice problem. Otherwise put, one has a problem related to the fact that one's choices are spread out over time. This survey reviews some of the challenging choice situations and problematic preference structures that can prompt dynamic choice problems. It also reviews some proposed solutions, and explains how (...) some familiar but potentially puzzling phenomena — including, for example, self-destructive addictive behavior and dangerous environmental destruction — have been illuminated by dynamic choice theory. (shrink)

What is it, precisely, that an agent intends when he intends, as we might say, to clean his stove today? What is the content of his intention? In recent years, Gilbert Harman and John Searle have maintained that all intentions are self-referential -- that is, that an adequate expression of the content of any intention makes essential reference to the intention whose content is being expressed. I shall call this the self-referentiality thesis (SRT). Harman, in his paper 'Practical Reasoning', argues (...) that "the intention to do A is the intention that, because of that very intention, one will do A". Searle, in his book, Intentionality, contends similarly that the "Intentional content" of an agent's "prior intention" to A identifies that very intention as a cause of the agent's (prospective) A-ing. In Sections 1-3 below, I show that the main arguments for the SRT are unsuccessful and that the thesis is problematic. In Section 4, I sketch an alternative account of the contents of intentions. (shrink)

While broadly in agreement with the conclusion that the exponentially discounted utility model (EDU) is not a universally valid rationality standard, I want to defend some intertemporal rationality criteria related to EDU, which Craig Callender might not share. My commentary explores the tension between these intuitions and Callender's arguments. In the first place, I show that many of the concerns that he raises are in fact compatible with intertemporal consistency (and sometimes even with EDU). Secondly, I rebut those arguments that (...) directly challenge consistency. I conclude that while we disagree on the rationality of consistency, we can nevertheless agree on its non-universality and its limited justification of policy interventions. (shrink)

Morality is a source of reasons for action, what philosophers call practical reasons. Kantians say that it ‘gives’ reasons to everyone. We can even think of moral requirements as amounting to particularly strong or stringent reasons, in an effort to demystify deontological views like Kant’s, with its insistence on inescapable or ‘binding’ moral requirements or ‘oughts.’¹ When we say that someone morally ought not to harm others, perhaps all we are saying is that he has a certain kind of reason (...) not to, one that wins out against any opposing reasons such as those touting benefits to him of ignoring others’ concerns. (shrink)

Although stability is a central notion in several academic disciplines, the parallelsremain unexplored since previous discussions of the concept have been almostexclusively subject-specific. In the literature we have found three basic conceptsof stability, that we call constancy, robustness, and resilience. They are all foundin both the natural and the social sciences. To analyze the three concepts we introducea general formal framework in which stability relates to transitions between states. Itcan then be shown that robustness is a limiting case of resilience, (...) whereas neitherconstancy nor resilience can be defined in terms of the other. Hence, there are twobasic concepts of stability, both of which are used in both the social and the naturalsciences. This congruence in the concepts of stability is of particular interest forendeavours to construct models that represent both natural and social phenomena. (shrink)

Tamar Schapiro has offered an important new ‘Kantian’ account of inclination and motivation, one that expands and refines Christine Korsgaard’s view. In this article I argue that Kant’s own view differs significantly from Schapiro’s. Above all, Kant thinks of inclinations as dispositions, not occurrent desires; and he does not believe that they stem directly from a non-rational source, as she argues. Schapiro’s ‘Kantian’ view rests on a much sharper distinction between the rational and non-rational parts of the soul. In the (...) process of explaining these differences, I argue that Kant’s own view is in some respects philosophically superior to Schapiro’s. (shrink)

There is a great deal of plausibility to the standard view that if one is rational and it is clear at the time of action that a certain move, say M1, would serve one’s concerns better than any other available move, then one will, as a rational agent, opt for move M1. Still, this view concerning rationality has been challenged at least in part because it seems to conflict with our considered judgments about what it is rational to do in (...) cases of temptation that share the structure of Warren Quinn’s self-torturer case. I argue that there is a way to accomodate our considered judgments about the relevant cases of temptation without giving up the standard view or dismissing, as in some way rationally defective, the concerns of the agents in the relevant cases. My reasoning relies on the idea that, at least in some cases, whether an action serves one’s concerns well depends on what action(s) or course(s) of action it is part of. In the final section of the paper, I explain how this idea sheds light on an important source of frustration in collective decision-making. (shrink)

Intention is at the heart of criminal law. If it is not the mens rea requirement found most often in offences, it is still the standard against which other grades of fault tend relatively to be judged. It has generated much controversy, as the crucial question, “Did the defendant intend X?” is resistant to clear answers. This paper argues that intention-questions are difficult because intention is not the thing law takes it to be: Importantly, contrary to law's assumptions, it is (...) neither a state of mind nor is it connected in an exclusive manner to the reasons for which we act. (shrink)