The “Transcendental Argument for God” (TAG) is typically understood as resting upon the “Impossibility of the Contrary.” We may be in a better position apologetically if we think about the Impossibility of the Contrary (IoC) in terms of three aspects of the IoC. These three aspects of the IoC are definition, dogma, and demonstration.
What is the IoC?
“Impossibility” refers to the impossibility of predication upon the presuppositions of some position. We might also take the impossibility in view to refer to the impossibility of the truth of some position, the impossibility of the rationality