[tortoise]

It is when it operates under the assumption that a supreme being is not, and will never be, under its purview.

Any "supreme being" that comes under science's purview is not all that supreme. More like an "above average being" or "pretty good being".

[Fester Chugabrew]

There is most likely no phenomenon, however normal or abnormal it may appear, that cannot be described by math or in human terms. How does this in any way render that phenomenon "natural" or "supernatural," and by extension scientifically accessible or not?