Whom is the problem of the essential indexical a problem for?

Abstract

Philosophers used to model belief as a relation between agents and propositions, which bear truth values depending on, and only on, the way the world is, until John Perry and David Lewis came up with cases of essentially indexical belief; that is, belief whose expression involves some indexical word, whose reference varies with the context. I shall argue that the problem of the essential indexical at best shows that belief should be tied somehow to what is subsequently acted upon, and must make room for other relations than those properly predicated. But it does not show that belief cannot be modeled as a binary relation between an agent and some suitable object (pace Perry), nor that this object cannot be a proposition (pace Lewis).