Let's say that someone came out tomorrow and said, "9/11 was an inside job, and in my role as Undersecretary of the Army I was instructed by Donald Rumsfeld to do X, Y, and Z to help carry it out." What is it, exactly, that Noam Chomsky believes would happen? Does he think this whistleblower would get a segment on 60 Minutes? Fawning mugshots on the cover of Time magazine? No, they'd be easily marginalized, pathologized as a crank, and ultimately disposed of. What would even be the incentive for someone to throw themselves into the buzzsaw of our complicit media and its credulous consumers?

This is something ignorant people (including Chomsky himself) also will often say about the JFK assassination, "oh someone would have come forward and said something." Well, people did come forward and say things, dozens of them, and they were ignored, mocked, harassed, and sometimes killed. With this kind of intimidation down to a science and communications channels more thoroughly surveilled than ever, coordinating a large action (especially with the standard spycraft techniques of compartmentalization and need-to-know) is probably easier than ever.

The lies are never foolproof, they're just delivered within a resilient system which controls how (and whether) the lies are talked about.