So once again, Bill, where is the proof that the towers fell the way you are saying they fell? In order for us to be able to say that they fell in that way, there needs to have been an investigation into the structural deficiencies that would allow the core to simply disappear. Your sources of information do not mention such an investigation. The official sources of information do not discuss it either. Their only method of dealing with the problem of the massively built and reinforced core is to pretend that it didn't exist. Now, you please explain to me with your superior reasoning skills and logic, how ignoring evidence is the same thing as conducting a rigorous scientific investigation.