Correspondence Principle

any new theory, whatever its character--or details--should reduce to the well-established theory to which it corresponds when the new theory is applied to the circumstances for which the less general theory is known to hold. This principle was first applied to the theory of atomic structure by Niels Bohr in l923. (Weidner and Sells, l960, p. 29) The principle can be applied to great advantage in relativity theory and in quantum mechanics. It can also be applied to the LAW OF REQUISITE variety , the principle of self-organization , and the more recent interpretations of the possibility of objectivity. (Umpleby )