 There are two strands to Born’s rereading of Bohr’s correspondence principle that have become quite common in the physics literature: first, the correspondence principle as a very general requirement that quantum mechanics ought to be able to recover the empirical successes of classical mechanics; and, second, the more specific requirement that it recover the predictions of classical mechanics in the limit of large masses and orbits of large dimension—this latter limit is typically expressed as \(n \rightarrow \infty\).