Stalnaker argues that the truth-maker for a proposition is the state of affairs that makes the proposition true. In the case of the proposition "The grass is green", the truth-maker is the state of affairs in which the grass is green.

Stalnaker argues that possible worlds are worlds that are logically, physically, and metaphysically possible. This means that possible worlds are worlds that are consistent with the laws of logic, the laws of physics, and the laws of metaphysics.

Stalnaker argues that the correspondence relation is the relation between a proposition and the state of affairs that makes it true. This means that a proposition is true if and only if the state of affairs that makes it true exists.

Stalnaker's theory of truth is a simple and straightforward theory that is consistent with our intuitions about truth. It is also a theory that is able to account for the truth of necessary propositions.

Stalnaker's theory of truth is a theory that is too abstract. This means that it is difficult to apply the theory to real-world cases.