 Debate over Williamson’s margin for error principle draws us deep into epistemology and modality (Yli-Vakkuri 2016). Preferring to explore the shallows, some commentators survey attitudes weaker than knowledge. According to Nicholas Smith (2008, 182) we cannot even guess that the threshold for baldness is the 400th hair. Hartry Field (2010, 203) denies that a rational man can fear that he has just passed the threshold into being old. Hope, speculation, and wonder do not require evidence but they do require understanding. So it is revealing that these attitudes have trouble getting a purchase on the threshold of oldness (or any other vague predicate). A simple explanation is that bare linguistic competence gives us knowledge that are no such thresholds. This accounts for the comical air of the epistemicist. Just as there is no conceptual room to worry that there is a natural number between sixty and sixty one, there is no conceptual room to worry that one has passed the threshold of oldness between one’s sixtieth and sixty first birthday.