I don't know why conspiracy theories always have to be so complicated!
if the government was involved in ANY way, i would picture it like this:
"Mister President we have information about a planned Terrorist attack on the United States"
"Terrorist attack? Bombs huh? Well, i was looking for a excuse to wage war anyway, we stand down and let them do their thing and see what happens"
*WTC goes down*
WTF i didn't expect THAT!
“It appeared that there had even been demonstrations to thank Big Brother for raising the chocolate ration to twenty grams a week. And only yesterday, he reflected, it had been announced that the ration was to be reduced to twenty grams a week. Was it possible that they could swallow that, after only twenty-four hours? Yes, they swallowed it.”
- George Orwell, ‘1984’