 If \(b\) and \(\textit{ms}\) are the same concept, then it must be possible to introduce either in place of the other without alteration of meaning—indeed this is clearly the intention, or part of the intention, of any analysis in the sense of Moore. Hence in particular the analysis \(b = \textit{ms}\) must not be different from \(b = b\) or \(\textit{ms} = \textit{ms}\). This would seem to reduce analysis to something trivial and uninformative. But it is evident otherwise—especially from cases in which, though a concept is in some sense known, its analysis presents difficulty—that analysis is not always trivial. (1946a [BE: 956])