i think what puns was trying to say is that nothing can be proven, only disproven, all scientists agree on this. no matter how many times you test something and get a positive result the next test could yield a negative result and disprove your theory. your physics teacher, if he's ever read a single physics book, which i'm sure he has, will not dispute this. theory, no matter how many people agree on it, or how many "pretty much consider it fact," is still just theory. there are places in the universe where even our "laws" don't apply. there's a reason we separate quantum physics from basic physics, because they tend to not agree with each other, even though they are both generally accepted as being correct, by generally the same people.