Found something else interesting:

I knew about the bonded-rubber damped steel connectors collapsing on each floor before. But I did not know about the 600-ton water-filled mass dampers at the top of the towers. That's 600 tons crushing the building down on itself. This from a website I located:

Did 600 ton water-filled mass dampers at the tops of the towers hasten the collapse? Did they, or could they in future designs, contribute to fire suppression? Did 10,000 bonded-rubber viscous damped steel connections play any special role in the initiation or progression of collapse?

So work that into your PHYSICS equations, all you conspiracy dudes.