Communication, Private Language, Rule

At the beginning of Modern Philosophy, Bacon conceives Knowledge to be a social, provisional enterprise.  But Descartes and Berkeley, each Theologically motivated, internalize Experience, whereupon Knowledge becomes private, incorporeal, and absolute.  Subsequently, it is not the Skeptic Hume, but Kant, who attempts to shatter this privacy, and Pragmatists, Marx, and, Nietzsche, continue to try to undo the influences of Descartes and Berkeley.  But, remaining insular into the 20th-century are Analytic Philosophers, as is signified by their abstraction of 'language' from communication, and its reification of it as an inert object of analysis.  It is because of that insularity that they are so startled when one of their own, Wittgenstein, returns from a hiatus and challenges both the absoluteness of their categories, and the privacy of language.  So, an intrusion of what elsewhere is plainly understood as 'interpersonal communication' becomes a threat to their insularity, under the rubric of Wittgenstein's 'argument against private language', one element of which is his analysis of 'following a rule'. However, as has been previously discussed, he himself still accepts some of their premises, e. g. when he misses that a rule is enacted, by some public, corporeal performance, such as writing a number on a piece of paper.