9/11 was sort of an inside job by the architects. Built during the height of the cold war, every mega construction project would have had to address what would happen if attacked. There had been a number of massive skyscraper fires already and even much smaller buildings had no way to effectively douse the flames. Imagine a massive raging inferno towering above a dense population centre for weeks or months or who knows how long. It would have been an even worse outcome. The health and mental health effects would have been incredibly devastating. A decision had to be made. A structural, engineered weakness to very hot flames was built in to make the towers implode on themselves, snuffing out the flames.

It would have been a tough call to make. Like the trolly problem, do you engineer it to save the occupants? Or the potential health of the rest of the city?

It makes sense to me to keep quiet about it after the fact. The architects did what they had to do and some people would not agree with their decision. Therefore due to ‘national security’ or whatever it’s best to just keep quiet. I’ve held on to this theory for a while but I think it’s been long enough to discuss it.