What you see is the exterior frame of the building not the core, the core is gone. In a pancake collapse, you would assume there might be some of the steel interior columns still standing. Keep in mind, according to the government, the floors collapsed. In a pancake collapse, what we should see is a pile of debris at the bottom, which was once floors, with at least some of the 47 interior concrete reinforced steel columns still standing.
What happened to the 47 concrete reinforced interior steel columns? How does a pancake collapse explain 500,000 lb steel beams lodged into the facades of buildings 600 feet away? For that matter, how does a pancake collapse explain pulverizing tons of concrete into 3-4 inch thick dust? It takes an awful lot of energy to produce the total destruction of the interior core structure. I'm still waiting for an explanation as to how a pancake collapse explains the above.
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