I wonder if he wrote that while on the island.

Human beings act as if wisdom and intelligence are general whereas in reality every single area of human endeavor requires so much detail passion and time to acquire the specific knowledge and to maintain currency as the field evolves that those speaking outside their own specific scope are mostly full of shit.

Chomsky is a perfect example of an academic that should never have strayed outside the academy. Everything he's done outside of his narrow field of linguistics has been an embarrassment.