It looks like his linguistics theory is wrong:
OK, I’m stretching to criticize Chomsky. I don’t really understand Chomsky’s theory of universal grammar, and can’t say whether the language of the Amazon tribe refutes his theory. But the article is fascinating.
And it contains this gem:
Steven Pinker, the Harvard cognitive scientist, who wrote admiringly about some of Chomsky’s ideas in his 1994 best-seller, “The Language Instinct,” told me, “There’s a lot of strange stuff going on in the Chomskyan program. He’s a guru, he makes pronouncements that his disciples accept on faith and that he doesn’t feel compelled to defend in the conventional scientific manner . . .