TALKING ABOUT WORLDS*

I explore the logic of the conditional, using credence judgments to argue against Duality and in favor of Conditional Excluded Middle . I then explore how to give a theory of the conditional which validates the latter and not the former, developing a variant on Kratzer (1981)’s restrictor theory, as well as a proposal which combines Stalnaker (1968)’s theory of the conditional with the theory of epistemic modals I develop in Mandelkern 2019a. I argue that the latter approach fits naturally with a conception of conditionals as referential devices which allow us to talk about particular worlds.