Me neither. I mean, think about it: If he's got all this money, why is he living in Afghanistan? Okay, weak maybe, but there has to be tons of countries he can live in that are easier to operate in. There's only so much he can control from a mountain in Afghanistan.
More to the point, what about the oh-so-convenient trail left by the hijackers? I mean, if you know how to fly a jet, what do you need a training manual for? Not to mention these guys went out of their way to be conspicuous days beforehand. And charging the tickets besides? Pretty sloppy for so-called pros, methinks.
Because they didn't know how to fly a jet. They knew how to crash a jet.