As you said above, it’s a question of probability and plausibility - but these are subjective judgments. We judge explanations to be plausible based on our own subjective sets of beliefs. If I believe there is no supernatural, then I will consider a supernatural explanation to be less plausible than a natural explanation. You, who believe in the supernatural, will have a different view of what’s plausible.
How is the theist even hypothetically to win? You’d have to provide convincing evidence that the supernatural exists. But you’re right, this isn’t easy. If this seems frustrating, consider this: what if the supernatural actually does not exist (as I believe to be the case, and as you should accept to be a logical possibility since it can’t be logically proven to exist). How is the atheist, even hypothetically, to convince you of this? You see, in either case, prior beliefs are difficult to defeat when they are beliefs in logically possible states of affairs.
Fred, if what we're ultimately doing here is just "subjective judgments" then why are we even debating? I don't think it is helpful to thrust debate about the nature of ultimate reality into the fog of relativism where every position becomes equally rational or irrational. Such an approach would shut down debate about not just God, but anything people disagree over.
I’m just saying that
plausibility assessments are subjective. The Blackwell Dictionary of Western Philosophy defines plausibility as:
A claim is plausible if it subjectively seems worthy of belief even if we have not necessarily studied its objective ground. Plausibility is thus acceptable credibility, and its degree of credibility can depend in part on the authority that advocates it. A plausible claim can turn out to be false, and an implausible claim can turn out to be true.In a debate, it doesn’t have to stop there. You can challenge, and try to defeat, the beliefs that are pertinent to the plausibility assessment. Alternatively, present arguments that are not dependent, or at least less dependent, on assumptions of what is plausible.
Regarding the “fog of relativism” – I do think there is an objective reality “out there” and what we should be doing is trying to overcome our natural subjectivism in order to figure out what that objective reality is, as much as possible. One very important way to do this is to engage with people who have differing views, and find out the basis of the disagreement. This does two things: 1) identifies the subjectivity that is present – often in both parties; 2) helps one understand the rationality of the other party’s position. Of course, it might also expose some irrationality on the part of either – which affords the opportunity to correct oneself.
Additionally, I do not assume the plausibility/probability of the supernatural because already believe in the supernatural a priori. Rather, I believe the supernatural because the arguments in favor of it are more rationally compelling. That said, the atheist could persuade me otherwise if he/she provides a better explanation. But thus far, I have not seen any such thing. So I do not agree that assessments of plausibility/probability plunge us into the self refuting arena of relativism. Some interpretations really are better than others.
OK, so you believe you have a rational basis for your belief in the supernatural. I think it would be hopeless for me to try and convince you otherwise, because I expect that supernaturalism is present in many nooks and crannies of your world view. So even if I could show that one particular argument for supernaturalism is weak, you would still have others. I also happen to think it very possible that your supernaturalistic world view is coherent – and therefore indefeasible.
That said, I don’t believe in the supernatural, and I think I have a rational basis for this belief. We can agree to disagree, or you could challenge this belief if you like. But let’s say you challenge it, and are unable to find a rationality defeater. Wouldn’t that be a hint that, perhaps, naturalism can be a coherent world view?