Full Idea
Kripke argues that the 'rule-following paradox' is essential to the more controversial private language argument, and introduces a radically new form of scepticism.
Gist of Idea
The sceptical rule-following paradox is the basis of the private language argument
Source
report of Saul A. Kripke (Wittgenstein on Rules and Private Language [1982]) by Robert Hanna - Rationality and Logic 6.1
Book Reference
Hanna,Robert: 'Rationality and Logic' [MIT 2006], p.160
A Reaction
It certainly seems that Kripke is right to emphasise the separateness of the two, as the paradox is quite persuasive, but the private language argument seems less so.