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(you need an account to see links) Yes it does! There is a clear and very important difference between theories and facts. Facts are things you cannot refute i.e. that if you drop an apple it will fall to the ground (sorry to go back to gravity once more). You cannot change the fact that the apple will fall no matter how many times you drop it, so it
is a fact. However the
explanation as to what makes that apple fall
cannot be proven so it can't be a fact. It can be taught as a fact (as I suppose it should be, until a new and better theory comes along) but that doesn't mean it's true. You can't prove that gravity is the force that makes apples fall as oppose to something else.