  But these appeals to distinctions between Protagorean selves—future or past—do not help. Suppose we grant to Protagoras that, when I make a claim about how the future will be, this claim concerns how things will be for my future self. It is just irrelevant to add that my future self and I are different beings. Claims about the future still have a form that makes them refutable by someone’s future experience. If I predict on Monday that on Tuesday my head will hurt, that claim is falsified either if I have no headache on Tuesday, or if, on Tuesday, there is someone who is by convention picked out as my continuant whose head does not hurt.