How is anyone, including you, to either definitively prove or disprove such claims until the government makes a thorough disclosure of the "evidence"? They could settle all questions about the 757 just by releasing the videos which they confiscated with amazing rapidity minutes after the Pentagon explosion. After all these years, they still haven't released them.
Black boxes? A subject of much controversy. Bodies of the flight crew? They have claimed only to have identified DNA, but they have not released the "evidence" to the public! The engines? Much controversy about that, too. "Evidence" again is not permitted to be examined by independent investigators.
Like any sensible person, I do not trust anything that governments claim---not without independent confirmation. Then there are the vast mass of uncritical thinkers who are deeply afraid to consider that their authority figures are lying to them, and become irrationally angry when that authority is questioned in any fundamental way.
The Official Wacko Conspiracy Theory claims that not only the fuselage went through that 16-foot hole, but also the entire bulk of that enormous plane---including those two heavy, very large engines!
Everyone acknowledges how sturdy was the side of the Pentagon where the supposed plane hit: is it not strange, then, that it collapsed 30 minutes after the impact --- for no apparent reason? (That phrase, "for no apparent reason," should achieve official recognition as the leitmotiv for all of 9/11)
If my arguments are faulty, then a fortiori so are yours---since you do not make arguments, only assertions!
The government has consistently destroyed evidence, and refuses to release to the public what evidence remains.
Most of the problems connected with 9/11 must necessarily lack definitive settlement until that happens. For you to say that such-and-such is definitively settled is simply untrue.
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Some time ago, I asked you to produce one government document, any government, which agreed with your conspiracy theory. So far none.
How about producing one document from a reputable professional organization which supports your conspiracy theory? I am talking about an organization which existed prior to 911, not one created after 911.