Principle of correspondence
Principle of correspondence is fundamental property of a scientific concept that means that if the concept negates some predictions of old, already accepted concepts, then the range should be specified, where, when and how the old concept still can be used and gives correct prediction.
The invention of the Principle of correspondence is usually attributed to Neils Bohr; this principle had been elaborated during creation of the quantum mechanics for mitigation of the contradiction with classical mechanics. The new concept of quantum mechanics is required to reproduce results of classical mechanics in the cases, where the classical mechanics is valid. However, the principle by itself is much more general, than just relations between classical mechanics and the quantum one.
On the base of principle of correspondence, many inventions can be rejected since the beginning, without the analysis of the content, just because they reject, for example, the law of conservation of energy–momentum (See Gravitsapa and Quantum structure transformer, without any attempts to indicate, in which cases the conservation of momentum and conservation of energy still can be used.
Alisa Bokulich. Bohr's Correspondence Principle. Oct 14, 2010. http://plato.stanford.edu/entries/bohr-correspondence/