What I really don't understand is why some people who understand what a scientific "theory" is, and yet make claim what it is or isn't?
Those who say "it is just a theory" ...show levels of their ignorance...or worse, their dishonesty.
Most branches and fields of science required empirical evidences to support or verified their theories to be true.
There are some fields of science that cannot be tested or have evidences, but do have mathematical or logical proofs, like superstring theory or M-theory.
Empirical science less on proofs and more on evidences.
And that's another thing that the same people who don't understand about theory, also don't understand about "evidence" and "proof", or why they don't mean the same things.
They don't mean the same things in the world of science and mathematics, and yet ignorant creationists persisted on using word like "proof" instead of "evidence", when "evidence" and "proof" are not synonymous to one another.
Fact are supported by evidences, not by proofs.