Well, he's the guy who said that we couldn't develop tools before we developed language, and I find that to be a ridiculous assertion. Many people are picture thinkers, perfectly capable of learning from demonstration.
He's a linguist, which is why he seems so smart when he talks... It's why he seems to logical and correct. His arguments are so clean and precise.
But it doesn't mean he has any answers. You can carry perfectly correct logic forth from a false assumption when you assume it to be true.