I agree with your logic, Jon. For what it's worth, the base assumption of the (materialist) atheist worldview is that the natural world is a closed system (i.e

I agree with your logic, Jon. For what it's worth, the base assumption of the (materialist) atheist worldview is that the natural world is a closed system (i.e. no supernatural), from which it follows that science can (at least in theory) describe all of reality. This is a very lightweight assumption, and an easy one to make, but I would point out that it is also not scientifically verifiable, as all scientific data has to be interpreted as being the result of some natural law.