I checked the 'find the boeing' site.

Sadly for the conspiracy theorists, the entry point is clearly shown, and on each side of the otherwise parallel lines of the 'passage', is a 'triangle' where the building crumbled as the wings hit it. Something much narrower than the plane would not have caused that.

Many people do not even know how to look at things...

"You don't have to prove the validity of any alternative scenario or theory in order to disprove an existing theory" ...