  Here Tarski is describing a position distinct from both the Demarcater’s position and the Debunker’s. The Relativist agrees with the Demarcater that logical consequence must be understood as formal consequence, and so presupposes a distinction between logical and nonlogical constants. But she agrees with the Debunker that we should not ask, “Which expressions are logical constants and which are not?” The way she reconciles these apparently conflicting positions is by relativizing logical consequence to a choice of logical constants. For each set C of logical constants, there will be a corresponding notion of C-consequence. None of these notions is to be identified with consequence simpliciter; different ones are useful for different purposes. In the limiting case, where every expression of the language is taken to be a logical constant, we get material consequence, but this is no more (and no less) the consequence relation than any of the others.