They didn't ignore that, they disproved it. One floor catching another would slow down the collapse. A pancaking collapse does not collapse at free fall speed. It can't. It requirs energy to break the supporting structure on the floor below. Any energy dispersed from the downward movment would neccessarily stop the speed at which it falls. Sorta like how a guy who bailes off a building in the movies, and falls through a bunch of canopies on the way down survives the fall. The support structures had to have been removed in order for the building to collapse at free fall speed. This might explain why hundreds of COPS, FIREFIGHTERS and REPORTERS all claimed to have heard explosions just before the collapse. Im sure they were all conspiracy theorists in on the big scam.
Also, the falling floors would not also cut the steel inner columns. So if it had been a pancake collapse, it would have left those supports standing in the skyline.
3 central columned steel buildings collapse from fire in one day. All three where the first 3 to have ever done so, and there have been thousands of fires many worse than these.
If jet fuel coule melt steel, your frying pan would melt while you were cooking.
I can't believe there are still people who actually believe the government's crap. But what am I wasting my time for. You simply can't convince some people that the sky is blue. Go on practicing your faith in the government.
The Daily Paul is a community website