According to an influential view by Elizabeth Harman, moral ignorance, as opposed to factual ignorance, never excuses one from blame. In defense of this view, Harman appeals to the following considerations: that moral ignorance always implies a lack of good will, and that moral truth is always accessible. In this paper, I clearly distinguish these considerations, and present challenges to both. If my arguments are successful, sometimes moral ignorance excuses.

Michelle Moody-Adams suggests that “the main obstacle to moral progress in social practices is the tendency to widespread affected ignorance of what can and should already be known.” This explanation is promising, though to understand it we need to know what willful (affected, motivated, strategic) ignorance actually is. This paper presents a novel analysis of this concept, which builds upon Moody-Adams (1994) and is contrasted with a recent account by Lynch (2016).