  The second intuition is the supervenience of the signification of truth. This is a descendant of M. Kremer's 1988 proposed supervenience of semantics. The idea is simple: which sentences fall under the concept truth should be fixed by (1) the interpretation of the nonsemantic vocabulary, and (2) the empirical facts. In non-circular cases, this intuition is particularly strong: the standard interpretation of “snow” and “white” and the empirical fact that snow is white, are enough to determine that the sentence “snow is white” falls under the concept truth. The supervenience of the signification of truth is the thesis that the signification of truth, whatever it is, is fixed by the ground model M. Clearly, the RTT satisfies this principle. 