I'm trying to understand you're thoughts here. The plane hits the building, damaging the outer supports where it impacted, and possibly damaging the interior supports to an unknown degree. This impact could have stripped the fire-protection from the steel supports. Most (50%+) of the fuel from the plane burned up in the fire ball, the rest may have burned up in about 10 minutes. The continuing fire was fueled completely and exclusively by the contents of the building - carpet, desks, computers, paper, tacky fake plants, etc. The heat continually generated by the fires fueled by the office contents was able to weaken the steel and, in tandem with the damage by the initial impact, was the reason the building fell.
Yes?
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