 To show that worlds, agents, and times do not suffice, YVH employ the much-discussed case of Mirror Man (YVH 2018, pp. 76–77). Mirror Man has a completely symmetrical brain: his left hemisphere is a mirror image of his right hemisphere. Mirror Man is thinking two qualitatively identical thoughts, one in his left hemisphere and one in his right hemisphere. Both thoughts would be expressed by “Kit is human,” but in the first thought the mental analog of the name ‘Kit’ is related to a person on Mirror Man’s left in such a way that it refers to that person, while in the second thought the distinct but qualitatively identical name ‘Kit’ refers to a visually exact wax replica located on Mirror Man’s right. Mirror Man is of course qualitatively exactly like himself, and both thoughts stand in all the same qualitative relations to the rest of Mirror Man. So a narrow content assignment must assign both thoughts the same content. Yet the first thought is true and the second thought is false. If content is a function from world, agent, time triples to truth values, then a narrow content assignment must assign one of the two thoughts the wrong truth value, since both occur in the same world, are thoughts of the same agent, and occur at the same time.