I try to keep an open mind about whether 9/11 was a genuine terrorist attack or an inside job. However, no-one has answered me those two exact questions. If the TTs were brought down by fire, it would have set shock waves throughout the whole construction world. Building regulatory bodies around the world would have been frantically churning out new regulations, and checking and re-fireproofing every single building on the planet above 10 storeys. None of that happened. And again, what the heck happened at WTC 7. Hey, but don't ask questions or you might be labelled a science denier and tinfoiler.