Takes up Kripke's theory of reference for proper names and natural kind words. Advocates investigation by means of ordinary language examples. Finds the problem for which Kripke's theory is offered as an answer seems to rest on an implausible picture of language.

cannot understand the language.”[1] This is not intended to cover (easily imaginable) cases of recording one's experiences in a personal code, for such a code, however obscure in fact, could in principle be deciphered. What Wittgenstein had in mind is a language conceived as necessarily comprehensible only to its single originator because the things which define its vocabulary are necessarily inaccessible to others.