@mathare92 It's true, I read it on the internet.
It's difficult to prove how a building is going to collapse, but it's safe to say that there's no scientific evidence, either visual or physical, that the building was brought down by explosives. It's ignorant people, most of whom have never worked in demolition, looking at a building going down and saying "Wow, someone blew that up" - Because obviously they have huge experience in devastating planestrikes and their effects on populated city centres.
It wasn't blown up, it was hollowed out from the other side, which the footage didn't show, and the building failed structurally. If you take out enough supports, that's what happens.
Why would you want to pointlessly demolish a building at the site of a major terrorist attack? It makes no sense, what so ever. Preparing a building for demolition takes a large ammount of workers, powertools, structural weakening, explosives, detonation chord, totalling several days of work, which rules out a quick decision, and even if you set it up before the collapse of the towers themselves, then you have a very high risk of the collapse cutting the detonation chord, causing a misfire, leaving a building full of explosives and evidence of a conspiracy - Apart from everyone who works in the building noticing those guys drilling into every supporting column.
That's not the kind of risk that any serious intelligence service would ever take. That rules out the other.
People always construct insane conspiracy theories around incomprehensible events. Whether that's the moonlanding, JFK or 9/11.