The show talks about how the theorists eventually split into two camps: The "let it happen" conspiracy and the "make it happen" conspiracy.
I'm not ruling out that the administration was intentionally asleep at the wheel and let 9/11 happen, even though they didn't know exactly what the attack was going to entail. I vividly remember Rumsfeld's first press conference after the attack, where he mentioned that Iraq was the likely culprit. These guys wanted to attack Iraq since before they were even in office, and I can actually see a few of them thinking that a terrorist attack might help them achieve that end. The fact that nobody could get a meeting with Bush about this matter in the build up reminds me of a scenario at a label when we kept asking why stations were not being serviced with a certain band's single, only to find out after we got them off the label that the president of the label told the promo guy to "bury it," because of his own personal agenda.
However, if you think about the logistics necessary for a "make it happen" conspiracy, you need to think about a few things:
a) This is the most inept administration in decades. Do you honestly think they are as retarded as they are in every other manner, yet in this one monumental task, they suddenly become geniuses?
b) This administration has also been the worst at keeping secrets. At some point, somebody has leaked something about nearly everything. Why would this be any different?
c) Don't you think that John O'Neill, former chief anti-terrorism guy for the FBI, in charge of security for the WTC, who also died trying to get people out of the building, would have noticed people drilling into the structure and rigging it with thousands of pounds of charges and miles worth of detonation cord? In fact, he was aware of the terror warnings. Don't you think he would have been looking for that sort of thing?!?!?!
d) Wouldn't they have found ANY of the miles of cord required to do what these conspiracies allege? Not to mention that there is zero physical evidence supporting any of the twenty plus conspiracies. You think they can recover somebody's hand and identify them by that, but they can't find evidence of demolition materials?
Oh wait ... it's a conspiracy. Even the people looking for that evidence are in on it.
If you believe this shit, you are either a fucking moron or in need of psychological help.