Possible Worlds Semantics

Possible worlds semantics (also called Kripke semantics) is the dominant framework for interpreting modal logic and analyzing modal discourse — statements about what is necessary, possible, or counterfactual. Developed by Saul Kripke in the late 1950s and early 1960s, it treats modal operators not as features of reality or of language in isolation, but as quantifiers over a structured space of possible