Do We Need Propositions?

Trenton Merricks argues that we need propositions to serve as the premises and conclusions of modally valid arguments (Merricks 2015). A modally valid argument is an argument in which, necessarily, if the premises are true, then the conclusion is also true. According to Mer- ricks, the premises and conclusions of modally valid arguments have their truth conditions essentially, and they exist necessarily. Sentences do not satisfy these conditions. Thus, we need propositions. Merricks’ argument adds a new chapter to the longstanding debate over the exis- tence of propositions. However, I argue that Merricks’ argument does not quite succeed. Merricks has overlooked one viable alternative to pos- tulating propositions. However, this alternative employs the relation of being true-at-a-world, which is difficult to analyze. Thus, the soundness of Merricks’ argument ultimately depends on the comparative merits of accepting propositions as abstract entities, versus accepting truth-at-a- world as an unanalyzed relation between sentences and possible worlds.