 It should be evident that the idea of narrow content is highly controversial. Some thinkers reject the very idea of narrow content, while to others it seems an attractive way to think about the kind or aspect of mental content that most closely captures the subject’s perspective on the world, the nature of rational belief and inference, and the nature and extent of a priori knowledge. Even among its advocates, however, there has been substantial disagreement on the precise form a theory of narrow content should take. In their detailed and thorough critique of narrow content, Yli-Vakkuri and Hawthorne (2018) have substantially clarified the issues and the possible forms a theory of narrow content might take. It will be interesting to see whether their book will mark the end of discussions of narrow content, or whether it will instead reinvigorate the discussion.