But why are you focused on circumstantial innuendo and not on the hard physical science of it?
I couldn't move on with my life until I had researched the hard science of it. I just had to know. I don't understand why others would be so apathetic?
Because ultimately I will never have access to the evidence or the expertise to evaluate it, and most importantly: I don't care if it was Saudi terrorists or American terrorists who planned the attacks.
Even if the US government is 100% responsible for 9/11, it has done far worse than kill those 3000 people, both before and after the event.
So focusing on whether or not they are responsible is a bit like obsessing over whether or not a serial killer also deserves a parking ticket.