Actually there is no known mechanism for gravity, although there are plenty of theories
.
And let’s suppose that we postulate a subatomic particle as the mechanism of gravity. Does this make it any more certain? Subatomic particles are themselves theoretical entities. As Rosenberg explains, we might ask “by what right can we claim that theories invoking these theoretical entities and properties provide real explanations when we cannot have experience of them whatever? Why should a theory about electrons or genes we cannot see, touch, smell, taste or feel be any better at explanation than astrology, New Age mystery mongering, superstition or fairy-tales?” (85).
There used to be a poster here who denied the existance of gravity. He also believed that the sun rotated around the earth. I would suggest that if you have something better, you contribute to the conversation rather than just being the debate judge.
Again, my point isn’t to try and undercut the theory of gravity or atomic theory or anything else. I’m simply trying to put the theory language into perspective. Consider that Newton never gave us a mechanism; he gave us a mathematical law. Would anyone think gravity is less certain, not knowing the mechanism by which it operates? I doubt it.
Actually, Newton did not give us the mathematics of gravity, he postulated the laws of motion. Concepts of gravity are as old as science. Gravity isn't postulating an unobserved phenomina.
But it’s still considered a theory by scientists. My point is simply this, “theory” in science is not primarily a statement about the uncertainty or the certainty of a thing, it’s a term used to describe a systematic explanation of some phenomena based on logic and evidence. When a YEC says about evolution “Oh, that’s just a theory” they are missing the point. Of course it’s a theory, this doesn’t mean it is uncertain or lacking empirical support. This is why evolutionists will always point out that gravity is a theory too.
You can claim that everything is a theory on some level but it contributes nothing to the discussion.
There is nothing wrong with saying that theory of gravity has much better evidence than the theory of evolution (after all, I think that’s what I tried to do in my first post!). But trying to argue that gravity is not a theory, it’s a fact, or that we can prove gravity or that evolution is a "theory" iis missing the boat and you'll just end up spinning your tires with someone who believes in evolution.