So you believe explosives are not used to demolish steel framed buildings then? It's an "imaginary" idea? Damned if there's one official forensics expert on this planet who even tried to find any. But please name one official forensics expert that did and provide the link if you know of one. Last I checked NIST, the ONLY "experts" who were mandated to conduct the investigation by Congress admitted they didn't bother to look for explosives or incendiaries or evidence of any under false pretext that violated their own published NFPA guidelines. No one can find anything if one doesn't look for it.