[spunkets]

"Granted, some science is pretty reliable, like chemical reactions and physics. "

That includes biochem and in particular, the biochemical foundation for evolution. That includes the mechanisms of Genetics.

"science deals only with the natural and not the supernatural because the supernatural is outside the realm of science"

That's right, because the supernatural is not subject to the scientific method. That's a fact, not a presumption.

[hyperkitty]

...because the supernatural is not subject to the scientific method. That's a fact, not a presumption.

Who determines what is supernatural and what is not? The statement "The supernatural is not subject to the scientific method." is a presumption in and of itself.