Several authors (including Lewis) have suggested applying counterpart theory to epistemic modality. Consider the following puzzle from Ninan (2018). A lottery has only two tickets, one blue and one red. The tickets are numbered 1 and 2, but we don’t know which color goes with which number. We know that the blue ticket won, but we don’t know the number of the winning ticket.  So, ticket 1 might be the winner, and likewise for ticket 2. Yet even though one of them is the red ticket it doesn’t seem to follow that the red ticket is such that it might be the winner. Ninan suggests that differing counterpart relations are evoked by different ways of picking out the tickets. (See also Lewis 1983e, Stalnaker 1986, Shaw 2015, Rabern 2018, among others.)