Sergio Tenenbaum

Subjectivism is the mainstream view of practical reason. According to subjectivism, what has value for an agent must ultimately be grounded in what the agent actually desires. Subjectivism is motivated by a conservative view of the scope and extent of practical reason. Against this view, my dissertation argues that any coherent conception of an end must endow practical reason with a scope that goes beyond anything that subjectivism could accommodate. ;Subjectivism correctly grasps that nothing can count as an end for an agent if she is incapable of recognizing it as such; value cannot exist independently of our capacity to appreciate it. I argue that the right conclusion to draw from this is that practical reason constitutes its own object by properly judging on practical matters. The grounds for taking a certain object to bear value lie not in the attributes of a certain object but in the nature of the activity of pursuing ends. According to the concept of practical reason I defend in this dissertation, which I call "the constitutive conception of practical reason", practical reason must set its objects from its own resources rather than find them in an external reality. ;But if practical reason does not track any independently existing objects, how can we distinguish between correct and incorrect judgements? It seems that this conception faces a dilemma: Either the activity of reason is merely a source of formal constraints, or it is an arbitrary, ungrounded exercise. I argue that this dilemma gets its grip on us only from an illegitimate separation of the rational and non-rational parts of human nature. This separation leads us to to think of our cognitive and conative powers as independent. However, the proper understanding of practical reason requires us to see our desires, emotions, etc. as presenting us with appearances of the good, as providing perspectives on something which we represent as the proper object of our pursuit. In forming an overarching conception of the good by reflectively assessing the claims of these different perspectives, practical reason sets its object.

Deontological theories face difficulties in accounting for situations involving risk; the most natural ways of extending deontological principles to such situations have unpalatable consequences. In extending ethical principles to decision under risk, theorists often assume the risk must be incorporated into the theory by means of a function from the product of probability assignments to certain values. Deontologists should reject this assumption; essentially different actions are available to the agent when she cannot know that a certain act is in her power, so we cannot simply understand her choice situation as a “risk-weighted” version of choice under certainty.

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.

Most philosophers working in moral psychology and practical reason think that either the notion of "good" or the notion of "desire" have central roles to play in our understanding of intentional explanations and practical reasoning. However, philosophers disagree sharply over how we are supposed to understand the notions of "desire" and "good", how these notions relate, and whether both play a significant and independent role in practical reason. In particular, the "Guise of the Good" thesis - the view that desire (or perhaps intention, or intentional action) always aims at the good - has received renewed attention in the last twenty years. Can one have desire for things that the desirer does not perceive to be good in any, or form intentions to act in way that one does not deem to be good? Does the notion of good play any essential role in an account of deliberation or practical reason? Moreover, philosophers also disagree about the relevant notion of good. Is it a purely formal notion, or does it involve a substantive conception of the good? Is the primary notion, the notion of the good for a particular agent, or the notion of good simpliciter? Does the relevant notion of good make essential appeal to human nature, or would it in principle extend to all rational beings? While these questions are central in contemporary work in ethics, practical reason, and philosophy of action, they are not new; similar issues were discussed in the ancient period. This volume of essays aims to bring together "systematic" and more historically-oriented work on these issues.

Action theorists and formal epistemologists often pursue parallel inquiries regarding rationality, with the former focused on practical rationality, and the latter focused on theoretical rationality. In both fields, there is currently a strong interest in exploring rationality in relation to time. This exploration raises questions about the rationality of certain patterns over time. For example, it raises questions about the rational permissibility of certain patterns of intention; similarly, it raises questions about the rational permissibility of certain patterns of belief. While the action-theoretic and epistemic questions raised are closely related, advances in one field are not always processed by the other. This volume brings together contributions by scholars in action theory and formal epistemology working on questions regarding rationality and time so that researchers in these overlapping fields can profit from each other’s insights. This book was originally published as a special issue of the _Canadian Journal of Philosophy. _.

Accidie, depression, and dejection seem to be psychological phenomena that are best characterized as cases in which an agent has no motivation to pursue what he or she judges to be good or valuable. The phenomena thus seem to present a challenge to any view that draws a close connection between motivation and evaluation. ‘Accidie, Evaluation, and Motivation’ aims to show that the phenomena are actually best explained by a theory that postulates a conceptual connection between motivation and evaluation.

Kant’s views on the relation between freedom and moral law seem to undergo a major, unannounced shift. In the third section of the Groundwork, Kant seems to be using the fact that we must act under the idea of freedom as a foundation for the moral law. However, in the Critique of Practical Reason, Kant claims that our awareness of our freedom depends on our awareness of the moral law. I argue that the apparent conflict between the two texts depends on a reading of the opening paragraphs of Groundwork III, and on an interpretation of Kant’s claim that we “act under the idea of freedom”, that is implausible on textual and on philosophical grounds. I then present an alternative interpretation of what Kant means by “acting under the idea of freedom” and of the opening paragraphs of Groundwork III. I argue that the only substantive conclusion of these paragraphs is that no theoretical proof of freedom is necessary. Moreover I argue that although these paragraphs raise concerns about the validity of the moral law, these concerns and Kant’s answers to them, do not give rise to any significant conflict with his views in the Critique of Practical Reason.