But this whole discussion and naturalism itself does not rest on inductive reasoning, it rests on deduction. Eventually, without deduction, you have no content at all. Throw out deduction you throw out language and math. I can see the point of, say, something like light where our earlier definition was flawed which lead to a apparent contradiction. Once the definition was fixed, the apparent contradiction disappeared. By that situation is entirely different from this situation. This situation deals with the very nature of the naturalistic hypothesis and the fact that it depends on fundamental principles which, not that it can't explain, but that it explicitly excludes from its metaphysic. If I start with naturalism, I end with determinism. there is not way around that chain. Its not a case of observation purifying definitions; its a case of the possible vs. the impossible.