ThERat
Deity
What do you mean, a slow airplane, they naturally has to assume if an airplane hit the building in fog, it would be at cruising speed. if you look at the weblink, they provided a comparison of the airplanes and does look that a 767 isn't that different from the airplane it was designed to withstand.Actually, the designers expressly them so that they would withstand a plane crash! This is often a conspiracy argument: But the conspiracy theorists conveniently forget that the building was designed to withstand a 737 (the biggest plane in the 70s), not a 767, and one empty of fuel and travelling slow in fog.
Maybe the theory about avoiding a topple seems not too off, it sounds more plausible than a deliberate attack carried out by Bush's cronies.