I thought this sounded like Wittgenstein... There is a lot of good in this article. You could make clearer that language is a cultural product in constant evolution, not biologically but through what Bernard Lonergan called "the eros of the human spirit". See his "Insight: A Study in Human Understanding" (you'll like chapter 5 on reference frames in physics). And I just finished Guy Deutscher's brilliant and fascinating book on language, "Through the Language Glass".