@JLNobody,
In it's most basic form, "evolution" simply means something like "change over time, In that sense it is not a theory, it is, basically, a fact, which virtually nobody, not even bible-thumping creationists, deny.
But again, that is not "the theory of evolution." If I say, for example, that humans exist on the planet earth, that is NOT "the theory of humans." There's nothing theoretical about it; it is merely the product of simple observation.
Yet people often talk about THE theory of evolution, as if there were one, and only one, theoretical explanation for the way life, as we see it, has changed over time. There are in fact many different "theories of evolution," or schools of thought regarding theoretical explanation. This is often overlooked by the casual commentator on "the" theory evolution.
I'm not disagreeing with you JL, I agree. Evolutionary theory, as a class of theorizing, is not "the theory of evolution." It is something much more diverse, and even controversial, than that.