I was taking an introductory course in quantum mechanics when I came across the Bohr's correspondence principle. According to Wikipedia, the correspondence principle states that the behavior of systems described by the theory of quantum mechanics reproduces classical physics in the limit of large quantum numbers. However it seemed to me as nothing more than the requirement that a theory should agree with experiments. Since the classical physics is formed so as to have its results agree with the experiments isn't it obviously necessary for a new theory to give the same results or atleast not contradict the original ones? Can someone make this clear to me? Thanks in advance..

I was taking an introductory course in quantum mechanics when I came across the Bohr's correspondence principle. According to Wikipedia, the correspondence principle states that the behavior of systems described by the theory of quantum mechanics reproduces classical physics in the limit of large quantum numbers. However it seemed to me as nothing more than the requirement that a theory should agree with experiments. Since the classical physics is formed so as to have its results agree with the experiments isn't it obviously necessary for a new theory to give the same results or atleast not contradict the original ones? Can someone make this clear to me?