Presumption is something we sometimes have to do. When we presume, however, we already admit that we do not know to be true what it is we’re having to presume is true. That ought to go without saying but there’s a reason why it has to be spelled out. Whatever we build on top of these presumptions, we must equally admit that either it too is a presumption, or that the basis of the truth of it isn’t the presumption but something matter of fact, and that any belief built from presumption only exists to prove the presumption on which it is based.
Well, what does that mean in English?
It means that Presuppositional Apologetics, for example, is self-refuting. They suggest, for instance, that we have to presume mind-independent moral standards exists in order to say something is good or evil. They say the same thing about logic. They say the same thing about many things which have perfectly good explanations and about things which are just brute facts. But in acknowledging “there is evil” or “there is logic”, they appeal to a fact of morality and a fact of logic. It isn’t the presuppositions but these facts that allows us to talk about them. What they’re actually trying to prove is that the presupposition itself is true; not that the presupposition is requisite! Again, they’re saying simply that there’s a reason why there are these facts and therefore (without any warrant whatsoever), their presupposition is correct.
I’m happy to say that Epistemology needs no presuppositions in the least. I’m happy to say that God cannot explain anything because God is exactly a presupposition irrelevant to anything actually proved under it, and in having to be presumed, nothing a person can know in any epistemological sense. God is the idea being proven, not the idea from which we explain other things! I’m also happy to say we need not presume morality or logic are mind-independent in order for us to talk about them or employ them as if they did.
Just a thought.