NKVD
Cossack
Well, Newton's Laws are correct, or at least a very good approximation. If they were completely wrong, we wouldn't teach them, after all!
However, on very large or very small scales (think galaxies or atoms), Newton's laws begin to be a lot worse. This is where we get the current theories of relativity and quantum physics.
As to your last paragraph, I think you're looking for the Theory of Everything, and while it doesn't exist yet, we're trying. We're trying hard.
yeah but still Newton's theory have been replaced by General Relativity. i was thinking more about fluid mecanics or any theory that can explain everything in its field being chemistry or biology.
and not because they teach them it is correct. in high school they never talked about quantum. all we got was Bohr's atom...yet that theory is wrong but like newton's theory easier...