Claim: Situation semantics unlike worlds, are not complete in the sense that every proposition or its negation holds in a world, According to Situations and Attitudes, meaning is a relation between a discourse situation, a connective situation and a described situation.
Evidence: Situations, unlike worlds, are not complete in the sense that every proposition or its negation holds in a world. According to Situations and Attitudes, meaning is a relation between a discourse situation, a connective situation and a described situation.