I realize that all methodology is fallible, and the Scientific Method cannot be applied to everything. Your example (if it's correct, I don't know because I don't have a physics degree) would certainly demonstrate this. I think, however, that you just reiterated my point, that the existence of God cannot be proven or dis-proven, especially with our current, fallible, methodologies. I was trying to say that believers who try to parody non-believers by saying, "Oh, I can't see gravity, does that exist?" aren't quite following correctly.