Quote Originally Posted by Stern90LX View Post
Actually I never bought into the Theory that there weren't planes involved. Even in the Pentagons case were the no-757-crash theorists would try to say otherwise. I've seen better compelling evidence to the contrary than what they purport. I still believe there was a huge cover up however and the US Gov knows more then it's letting on.
There's little doubt in my mind that government officials know more about the incident than we have been told. There may have even been some complicity among some government officials.

However, the collapse was caused by the damaged exoskeletal structure during the impact, damaged steel fire protection also by the impact, and fire that reduced the yeild strength of the steel.

I have been studying buildings for 21 years and designing them for 18 years, including 2 tall buildings. While watching the events unfold on TV, that experience allowed me to predict the failures within 20 minutes. Why, those two buildings failed exactly when and how they should have under the circumstances.

The case for planned explosive demolition is very easy to refute. The theories also distract us from what the real goals should be, how to prevent it from happening again.