Comment: I said the towers were essentially tubes.

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In reply to comment: You never said it, you (see in situ)

fireant's picture

I said the towers were essentially tubes.

How you can read that to mean the columns were tubes or flimsy is beyond me. I certainly never intended for that to be communicated. The vertical cores were indeed strong and carried their load well; at least until the airplanes kinked and/or severed them.

Undo what Wilson did