There are certainly a lot of things that don't quite add up. I've seen a fair few bits on this and while I don't say the U.S government orchestrated the whole thing there is certainly plenty to provoke thought.
Anybody in explosive demolition will tell you something's not quite right though as both towers fell into their own footprints. That takes a lot of control.
Either way it's a shitty thing that happened and no amount sof speculation can bring back to the families their dead