Nomy Arpaly

Amanda works in a library, and a patron asks for her help in learning about duty-to- rescue laws in China. She throws herself into the task, spending hours on retrieving documents from governmental and non-governmental sources, getting electronic translations, looking for literature on Scandinavian duty-to-rescue laws that mention Chinese laws for comparison, and so on. Why? She likes to gain this sort of general knowledge of the world; perhaps the reason she works so hard is that she is learning fascinating facts in doing so. She is also a proud librarian; perhaps the reason she works so hard is that a patron needs her assistance. She is a library employee; perhaps her reason for working so hard is that this sort of effort is noted by her employer and gives her career a boost, or perhaps it is just that doing this sort of work is the condition of her continued employment. Perhaps the reason is that the patron is charming.

Epistemic partialism is the view that friends have a doxastic duty to overestimate each other. If one holds that there are no practical reasons for belief, we will argue, one has to deny the existence of any epistemic duties, and thus reject epistemic partialism. But if it is false that one has a doxastic duty to overestimate one’s friends, why does it so often seem true? We argue that there is a robust causal relationship between friendship and overestimation that can be mistaken for a constitutive relationship; we also argue that one can still accept some of the normative intuitions that motivate epistemic partialism even if one rejects epistemic partialism itself. Along the way, we consider and reject a watered-down version of epistemic partialism—call it epistemic partialism-light—according to which one has a duty to take steps to create in oneself a disposition to overestimate one’s friends.

Many psychiatrists tell their clients that any mental disorder is ‘‘a disease, just like diabetes’’. This slogan appears to suggest that mental states and behavior that are classified ‘‘mental disorders’’ are somehow radically different from other mental states and behaviors—both when it comes to simply understanding people and when it comes to moral assessments of mental states and of actions. After all, mental illness is just like diabetes, while other human conditions are not. That sounds like a huge difference. I think this suggestion is misleading