Argues that we do not act intentionally ‘under the guise of the good.’ This makes it hard to explain why akrasia is distinctively irrational; but this is no objection, since it is just as hard to explain on the opposing view. Ends with a problem of akrasia for ethical rationalists.

I defend the historical definition of "function" originally given in my Language, Thought and Other Biological Categories (1984a). The definition was not offered in the spirit of conceptual analysis but is more akin to a theoretical definition of "function". A major theme is that nonhistorical analyses of "function" fail to deal adequately with items that are not capable of performing their functions.

When it comes to scientific explanation, our parsimonious tendencies mean that we focus almost exclusively on those dispositions whose manifestations result in some sort of change – changes in properties, locations, velocities and so on. Following this tendency, our notion of causation is one that is inherently dynamic, as if the maintenance of the status quo were merely a given. Contrary to this position, I argue that a complete concept of causation must also account for dispositions whose manifestations involve no (...) changes at all, and that a causal theory that fails to include these ‘static’ dispositions alongside the dynamic ones renders static occurrences miraculous. (shrink)

Dispositions are modal properties. The standard conception of dispositions holds that each disposition is individuated by its stimulus condition(s) and its manifestation(s), and that their modality is best captured by some conditional construction that relates stimulus to manifestation as antecedent to consequent. I propose an alternative conception of dispositions: each disposition is individuated by its manifestation alone, and its modality is closest to that of possibility — a fragile vase, for instance, is one that can break easily. The view is (...) expounded in some detail and defended against the major objections. (shrink)

Constitutivism is the view that it is possible to derive contentful, normatively binding demands of practical reason and morality from the constitutive features of agency. Whereas much of the debate has focused on the constitutivist's ability to derive content, David Enoch has challenged her ability to generate normativity. Even if one can derive content from the constitutive aims of agency, one could simply demur: ?Bah! Agency, shmagency?. The ?Why be moral?? question would be replaced by the ?Why be an agent?? (...) question. It is the aim of this paper to show that the shmagency objection is essentially correct, though not as originally defended by Enoch. Since Enoch posed his argument as ruling out the normative authority of agency under any conception of the constitutive features of agency, constitutivists have responded by arguing for the inescapability of certain minimal features of agency. I argue that this amounts to equivocation: the constitutivist appeals to a minimal conception of agency in answering the normative question but to a richer understanding in answering the content question. The key to the shmagency objection, as I shall defend it, is to insist that the same sense of agency must be employed in answering both questions. A shmagent can concede that there may be inescapable ways of understanding agency, but insist that any such understanding would have to be too minimal to generate substantive content. (shrink)

Constitutivists hope to locate the foundations of ethics in the nature of action. They hope to find norms that are constitutive of agency. Recently David Enoch has argued that even if there are such norms, they cannot provide the last word when it comes to normativity, since they cannot tell us whether we have reason to be agents rather than shmagents. I argue that the force of the shmagency objection has been considerably overestimated, because philosophers on both sides of the (...) debate have failed to grasp the true source of the authority of agency’s constitutive norm. Some constitutivists believe that this authority is rooted in the inescapability of agency. Yet agency is not, in fact, inescapable. What actually grounds the authority of agency’s constitutive norm is the fact that there is no standpoint outside of agency from which we can intelligibly ask normative questions. (shrink)

Argues that, in acting for a reason, one takes that reason to explain one's action, not to justify it: reasons for acting need not be seen "under the guise of the good". The argument turns on the need to explain the place of "practical knowledge" - knowing what one is doing - in intentional action. A revised and expanded version of this material appears in Part One of "Reasons without Rationalism" (Princeton, 2007).

Metaethical constructivism is one of the main movements within contemporary metaethics – especially among those with Kantian inclinations. But both the philosophical coherence and the Kantian pedigree of constructivism are hotly contested. In the first half of this article, I first explore the sense in which Kant's own views might be described as constructivist and then use the resulting understanding as a guide to how we might think about Kantian constructivism today. Along the way, I hope to suggest that a (...) fairly diverse range of views within contemporary metaethics – including some without any explicit allegiance to Kant – may be thought of as pursuing a version of the resulting strategy. (shrink)

A common misunderstanding of the selected effects theory of function is that natural selection operating over an evolutionary time scale is the only functionbestowing process in the natural world. This construal of the selected effects theory conflicts with the existence and ubiquity of neurobiological functions that are evolutionary novel, such as structures underlying reading ability. This conflict has suggested to some that, while the selected effects theory may be relevant to some areas of evolutionary biology, its relevance to neuroscience is (...) marginal. This line of reasoning, however, neglects the fact that synapses, entire neurons, and potentially groups of neurons can undergo a type of selection analogous to natural selection operating over an evolutionary time scale. In the following, I argue that neural selection should be construed, by the selected effect theorist, as a distinct type of function-bestowing process in addition to natural selection. After explicating a generalized selected effects theory of function and distinguishing it from similar attempts to extend the selected effects theory, I do four things. First, I show how it allows one to identify neural selection as a distinct function-bestowing process, in contrast to other forms of neural structure formation such as neural construction. Second, I defend the view from one major criticism, and in so doing I clarify the content of the view. Third, I examine drug addiction to show the potential relevance of neural selection to neuroscientific and psychological research. Finally, I endorse a modest pluralism of function concepts within biology. (shrink)

Constitutivists explicitly emphasize the importance of self-reflection for rational agency. Interestingly enough, there is no clear account of how and why self-reflection plays such an important role for these views. My aim in this paper is to address this underappreciated problem for constitutivist views and to determine whether constitutivist self-reflection is normatively oriented. Understanding its normative features will allow us to evaluate a potential way that constitutivism may meet its purported metaethical promise. I begin by showing why constitutivism, as exemplified (...) by Korsgaard’s and Velleman’s respective views, takes self-reflection to be a constitutive feature of rational agency. Closer examination of this claim suggests three underappreciated problems for the constitutivist’s apparent reliance on self-reflection. First, we have no picture of the specific role that self-reflection plays. Second, it is unclear in what sense it is a requirement for full-fledged agency and, thereby, for self-constitution. Third, it is not clear whether it has any necessary normative features, even given the often cited moral normativity associated with constitutivism. In §1, I will address the first and second questions. §2 will be dedicated to considering the third question. (shrink)

This chapter develops a theory of categorical normativity, of those principles that have authority over us regardless of our ends and interests. It argues that there is an intimate connection between these norms and the conditions of agency. In this respect, it offers a version of constitutivism. But the version of constitutivism defended is unique in a few respects. First, it is naturalistic: agency is an emergent property, like the properties of biology and economics. Second, it is social: agency is (...) something constructed by the complex interaction of agents. And third, it supports the normativity of a particular contractualist procedure: adhering to Kant’s Formula of the Realm of Ends is a condition on agency, and so a categorical requirement. (shrink)

Paul Katsafanas explores how we can justify normative claims such as 'murder is wrong'. He defends an original account of constitutivism--the view that we do so by showing that agents become committed to them in virtue of acting--and resolves philosophical puzzles about the metaphysics, epistemology, and practical grip of normative claims.