Online research in philosophy

According to one view about the rationality of belief, such rationality is ultimately nothing other than the rationality that one exhibits in taking the means to one’s ends. On this view, epistemic rationality is really a species or special case of instrumental rationality. In particular, epistemic rationality is instrumental rationality in the service of one’s distinctively cognitive or epistemic goals (perhaps: one’s goal of holding true rather than false beliefs). In my (2003), I dubbed this view the instrumentalist conception of epistemic rationality.

The Wide-Scope view of instrumental reason holds that you should not intend an end without also intending what you believe to be the necessary means. This, the Wide-Scoper claims, provides the best account of why failing to intend the believed means to your end is a rational failing. But Wide-Scopers have struggled to meet a simple Explanatory Challenge: why shouldn’t you intend an end without intending the necessary means? What reason is there not to do so? In the first half of this paper, I argue that the Wide-Scope view struggles to meet the Explanatory Challenge because it takes the principles of instrumental reason to have unlimited application – to apply to all agents, in all circumstances. I then go on to offer an new account of these principles. The new account is very much in the spirit of the Wide-Scope view, and shares its central advantages, but lacks its unlimited application. This view should, therefore, find the Explanatory Challenge more tractable. In the second half of the paper, I argue that this prediction is confirmed. If the requirements of instrumental reason apply only when a means is, or is believed to be, necessary for your end, then plausible independent claims about reasons, rationality, and intentions, explain why failing to intend the necessary means to your ends is a rational failing.

Argues for a "cognitivist" account of the instrumental principle, on which it is the application of theoretical reason to the beliefs that figure in our intentions. This doctrine is put to work in solving a puzzle about instrumental reason that plagues alternative views.

Some philosophers have tried to establish a connection between the normativity of instrumental rationality and the paradox presented by Lewis Carroll in his 1895 paper “What the Tortoise Said to Achilles.” I here examine and argue against accounts of this connection presented by Peter Railton and James Dreier before presenting my own account and discussing its implications for instrumentalism (the view that all there is to practical rationality is instrumental rationality). In my view, the potential for a Carroll-style regress just shows us that since instrumental rationality involves a higher-order commitment to combine our willing an end with our taking the necessary means, it therefore cannot, on pain of regress, itself be added as a conjunct to one of the elements to be combined. This view does not support instrumentalism.

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.

This paper addresses some connections between conceptions of the will and the theory of practical reason. The first two sections argue against the idea that volitional commitments should be understood along the lines of endorsement of normative principles. A normative account of volition cannot make sense of akrasia, and it obscures an important difference between belief and intention. Sections three and four draw on the non-normative conception of the will in an account of instrumental rationality. The central problem is to explain the grip of instrumental requirements even in cases in which agents do not fully endorse the ends they are pursuing. The solution I propose appeals to coherence constraints on the beliefs that condition the distinctive volitional stance of intention.

The rationality of means-end reasoning is the bedrock of the Humean account of practical reasons. But the normativity of such reasoning can not be taken for granted. I consider and reject the idea that the normativity of instrumental reasoning can be explained – either in terms of its being constitutive of the very notion of having an end, or solely in terms of instrumental considerations. I argue that the instrumental principle is itself a brute norm, and that this is consistent with a Humean account of practical reasons.

A naturalistic project descended from Hume seeks to explain „ought‟ and normativity as a product of motivational states such as desires and aversions.2 Following Kant, rationalists reject this thesis, holding that „ought‟ rather expresses a command of reason or intellect independent of desires. On Hume‟s view the only genuine form of practical reason is theoretical reason operating in the service of desire, as in calculation of means to ends. Reason at most discovers normative requirements, which exist through the interrelation of subjective desires and objective world. The Humean desiredependence view of the source of normativity is commonly associated with instrumentalism, an influential theory of normative content according to which agents ought always and only to act so as to optimize satisfaction of their own desires. But rationalists (including Thomas Nagel, Jean Hampton, and Christine Korsgaard) have recently argued that proponents of desire-dependence are not entitled even to this instrumentalist „ought.‟3 Instrumentalism holds that all normativity derives from the instrumental norm: approximately, the principle that one ought to take the means to one‟s ends, or..

A naturalistic project descended from Hume seeks to explain „ought‟ and normativity as a product of motivational states such as desires and aversions.2 Following Kant, rationalists reject this thesis, holding that „ought‟ rather expresses a command of reason or intellect independent of desires. On Hume‟s view the only genuine form of practical reason is theoretical reason operating in the service of desire, as in calculation of means to ends. Reason at most discovers normative requirements, which exist through the interrelation of subjective desires and objective world. The Humean desiredependence view of the source of normativity is commonly associated with instrumentalism, an influential theory of normative content according to which agents ought always and only to act so as to optimize satisfaction of their own desires. But rationalists (including Thomas Nagel, Jean Hampton, and Christine Korsgaard) have recently argued that proponents of desire-dependence are not entitled even to this instrumentalist „ought.‟3 Instrumentalism holds that all normativity derives from the instrumental norm: approximately, the principle that one ought to take the means to one‟s ends, or..

It is common, though perhaps not correct, to think that practical rationality is strictly instrumental.1 The functions of instrumental reason include finding suitable means to our determinate ends, helping to determine our indeterminate ends, and implementing our principles in appropriate actions. One reason that might be given for adopting instrumentalism with respect to rationality might be that our best scientific evidence offers little support for the idea that our brains have powers to detect good and bad as such in persons, actions, or lives. But whatever one’s reasons for taking up instrumentalism, it remains to specify the relationship means are to have with ends. A natural demand is that instrumentally rational actions implement the best means to one’s given ends. Optimizing conceptions of rationality endorse this demand. A competing conception of rationality—the satisficing conception—weakens this requirement and permits some rational actions to implement (merely) satisfactory means to the agent’s given ends. The present article argues that instrumentalist theories of rationality as commonly understood cannot consistently accommodate this satisficing conception of rationality.