by the way most conspiracy theorists don't really understand the physics involved either. to an extent their belief is as blind as yours.
to ME the giveaway is the symmetrical nature of the collapse into the path of greatest resistance which was the case for ALL THREE BUILDINGS. this flies in the face of the 2nd law of thermodynamics.
its hard to say what should be the giveaway for a regular person considering that a regular person is completely brain dead.