Nathaniel Sharadin

Motivational Internalism is a collection of thirteen new essays on exactly the topic you expect it to be, given the title. It also contains an introductory chapter, in which the editors attach an excellent overview of the current state of play to an intimidating bibliography. The essays in the volume are divided into three sections, each with its own, shorter, introduction by the editors. The first section concerns evidence for and against motivational internalism; the second concerns the relevance of internalism for metaethics; the final section considers ways of bridging the gap between internalist and externalist accounts of moral motivation. In what follows I'll comment briefly on each of the essays in these sections before remarking on who, besides libraries, should buy this book.

Permissivism is the view that sometimes an agent's total evidential state entails both that she is epistemically permitted to believe that P and that she is epistemically permitted to believe that Q, where P and Q are contradictories. Uniqueness is the denial of Permissivism. Permissivism has recently come under attack on several fronts. If these attacks are successful, then we may be forced to accept an unwelcome asymmetry between epistemic and practical rationality. In this essay I clarify the debate by distinguishing two versions of Permissiveness and Uniqueness. I then respond to several recent challenges to Permissivism in an attempt to even the score between Permissivism and Uniqueness. I will also respond to a worry – arising out of my discussion – that a defense of Permissivism itself introduces an unwelcome asymmetry between epistemic and practical rationality.

In previous work I argued that purely probabilistic accounts of what it takes to promote a desire are mistaken. This is because, I argued, there are desires that it is possible to promote but impossible to probabilistically promote. In a recent article critical of my account, Joshua DiPaolo and Jeffrey Behrends articulate a methodological principle -- Check the Neighborhood -- and claim that respecting this principle rescues pure probabilism from my argument. In this reply, I accept the methodological principle and show that, despite rendering the original argument invalid, there remains a neighboring argument against purely probabilistic accounts of promotion.