The large gash in its side is primarily what brought the building down and this was all brought out with video of the gash and the conversations of the fireman being ordered to evacuate the building and why they were being ordered to evacuate. This was made public not long after the events at the time. I will in no way rehash what has been public knowledge for years. It is nonsensical to do so, but your probably can find someone to play the game with you.