This is also a misconception of science in general, but I've heard many people say, "Physics (science) has proven. . ." or "Can we use Physics (science) to prove this?" The misconception is that the scientific method can prove something with 100% certainty. This is certainly not the case; experiments only validate a law in settings similar to that in which the experiments were conducted. Granted, we can often reasonably generalize our results far beyond particular settings, but we can only hold laws with certainty where they have been tested and verified.