Probability (n.) drops out entirely where the question turns on pure reason.
Probability (n.) is a fraction of a possible certainty — which is why evidence from experience cannot bring us even one step closer to the supersensible.
Probability (n.) calculated yields not probable but wholly certain judgments — about how possible certain cases are, infallible over the whole and undetermined for any single case.
Probability (n.) is a plaything that suits metaphysics as poorly as geometry: whatever is known a priori must be apodictically certain.
Probability (n.) of God's existence is not even possible: where the object is supposed to be necessary, talk of probability is contradictory.