Remember that the simplest solution is usually the answer, the more elaborate the events get, and as of now they are very elaborate, the more unfeasible it becomes.
First remember that the structural integraty of the towers had already been severely compromised by two 300,000 lbs jets carrying 20,000 lbs of fuel hitting it at over 500 mph, these top floors are not being held up by very much at this point. Then you have the slight further weakening of the steel by the fire. At this point a gust of wind could have even brought them down.
I don't really believe "pools of molten steel". First, you are in a building that was just hit by an airplane and you are trying to save your life, how observant are you really to know what you briefly see. Also this could be any number of things melted by the crash, aluminum, copper, office supplies, etc.
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Um...I'm confused. You say that the steel will bend long before it warps. Warp means to bend. The structure would have bended in order to colapse. The problem is that aluminum wouyld bend, or warp, long before steel would have. Aluminum has a much lower melting and warping temperature than steel. Aluminum melts at about 1220.666 degrees F.
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I never said anything about bending, when the structural stenghth of the steel gets to a certain amount that it can no longer support the weight on it, it is coming down and the final bending will not happen for longer than a split second, this is not a play-doh tower comming down over time and sort of slowly collapsing, this is full out structural failure of the entire super-structure at once. Remember that the superstructure comprised of both the outer steel walls and the inner core, if it was the inner core that ultimately failed, there could be perfectly normal temperatures on the outside aluminum and steel. But as soon as the inner core started to fail, it would but additional stress on the outer steel which would be more than it could support and it would also immediately fail no matter what temperature it was at.