So by it not being Al Queda (which you claim) it automatically means it was Americans? Then what did? No there weren't. Not at all. You have NO facts to back this up. Yes, because you can really tell when they are speeding into a building. People only saw them for a very few moments before they crashed into the towers. Who said they didn't have a bomb in the plane? In fact, the terrorists DID have explosives in the plane, so YES A BOMB WENT OFF. How is it "plain to" you that terrorists did were not responsible for 9/11? It was an act of TERRORISM, no matter if Al Queda, the government, or any other group of people did it. Therefore TERRORISTS are responsible for the act of TERRORISM that was 9/11. Even if it wasn't Al Queda that was responsible, how do you assume it was not another group of foreign (meaning not American or US government) terrorists? Until further notified I am going to guess you are basing your arguement on "Loose Change" which is a horribly false piece of media at best.
Thats the only logical explanation Idk! You tell me No facts? Contless eye witness views, what the damn tape of them coming down. The under-sides of the planes were shaped differently. Why wouldn't they come forward? What wouldnt they take responsibility? Thats what they do.