This paper introduces and argues for contrastivism about intentions. According to contrastivism, intention is not a binary relation between an agent and an action. Rather, it is a ternary relation between an agent, an action, and an alternative. Contrastivism is introduced via a discussion of cases of known but (apparently) unintended side effects. Such cases are puzzling. They put pressure on us to reject a number of highly compelling theses about intention, intentional action, and practical reason. And they give rise to a puzzle about rather-than constructions such as ‘I intend to ϕ rather than ψ’: In side effect cases it can seem wrong to claim that the subject intends to ϕ yet acceptable to claim that they intend to ϕ rather than ψ. This cries out for explanation. Contrastivism provides a unified response to all of these problems.

Reliabilism about knowledge states that a belief-forming process generates knowledge only if its likelihood of generating true belief exceeds 50 percent. Despite the prominence of reliabilism today, there are very few if any explicit arguments for reliabilism in the literature. In this essay, I address this lacuna by formulating a new independent argument for reliabilism. As I explain, reliabilism can be derived from certain key knowledge-closure principles. Furthermore, I show how this argument can withstand John Turri’s two recent objections to reliabilism: the argument from explanatory inference and the argument from achievements.