Instrumental Rationality: A Reprise

Instrumental Desires , Instrumental Rationality

The requirements of instrumental rationality are often thought to be normative conditions on choice or intention, but this is a mistake. Instrumental rationality is best understood as a requirement of coherence on an agent's non-instrumental desires and means-end beliefs. Since only a subset of an agent's means-end beliefs concern possible actions, the connection with intention is thus more obl...

Epistemic Rationality as Instrumental Rationality: A Critique

My aim in this paper is to explore the relationship between epistemic rationality and instrumental rationality. By epistemic rationality, I mean, roughly, the kind of rationality which one displays when one believes propositions that are strongly supported by one's evidence and refrains from believing propositions that are improbable given one's evidence. Prominent epistemologists frequently em...

Instrumental Rationality

0. Is there any distinctive aspect of rationality that deserves the label of ―instrumental rationality‖? Recently, Joseph Raz (2005) has argued that instrumental rationality is a ―myth‖. In this essay, I shall give some qualified support to Raz‘s position: as I shall argue, many philosophers have indeed been seduced by certain myths about instrumental rationality. Nonetheless, Raz‘s conclusion ...

Evidential Support and Instrumental Rationality

Functional Decision Theory: A New Theory of Instrumental Rationality

This paper describes and motivates a new decision theory known as functional decision theory (FDT), as distinct from causal decision theory and evidential decision theory. Functional decision theorists hold that the normative principle for action is to treat one's decision as the output of a fixed mathematical function that answers the question,"Which output of this very function would yield th...