 The notion of private language argument is typically associated with the later argument by Wittgenstein in Philosophical Investigations to the effect that a private language is logically impossible for an individual to use consistently and for others to understand. By private language, Wittgenstein means a language with words whose meaning is essentially constituted by and for the inner experience or individual consciousness of a subject. In a previous version from 1929 (see the Bergen electronic edition), Wittgenstein refers to the primacy of our public everyday language about physical things over a language of immediate sensations. In the 1951 version (2009, 203, 242ff) such language is impossible to coherently make sense of, the language is being shown to be dependent on the public social institutions of language-games and their rules as embedded in actual forms of life. A private language would be a language which could be generated wholly through individual acts of unsharable self-consciousness and understood, in principle, only by that individual speaker, by means of his or her self-consciousness. This is an incoherent notion. 