You can see the problem with that reasoning by substituting another word, to which you hold no prejudice, for "god". For example which of these would you endorse: 1. stating Buddha exists is as delusional as stating Budda doesn't exist. 2. stating Thor exists is as delusional as stating Thor doesn't exist. 3. stating Ra exists is as delusional as stating Ra doesn't exist. 4. stating The Great White Wolf exists is as delusional as stating The Great White Wolf doesn't exist. 5. stating Paul Bunyon exists is as delusional as stating Paul Bunyon doesn't exist. As you see, it's pretty hard to draw the axiom you've posed. I can give you a list of scientists who I think would rise that challenge. If you still have any school books on World History, you can just look at the credentials of the authors. Usually they begin at Chapter 1 explaining the mythological roots of religion. Well, Ok, what's the probability that religions do not evolve from superstion, myth, legend or fable? If that's too hard to devise a probability density function for, to solve for the mean and variance, then we can turn to the thousands of tablets recovered out of Mesopotamia and just read them. That would save a lot of effort since that work has all been done long ago.