9/11--Who was behind it?

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>>38
     Actually, yes you do.  The same way you needed to be an engineer to know that the titanic could sink.  You also needed to be an engineer to know that wind would make a suspension bridge move like a flag. 
       That was not some debris, do you know the weight of the towers?  And we aren't talking throwing sand at the building, we are talking some big chunks in cases.
     y did they blow up building seven?  If it was really an issue wouldn't it make more sence to put anything you wanted destroyed in the 2 towers? I mean it's not like they would have run out of room in them.
     If the towers were blown up in the foundation they wouldn't have collapsed from the top.  I mean if you blew up the roots of a tree how would it collapse do you think?
     Ok, if you were going to blow up the towers and make it look like a terrorist attack what would you need?  Presisely placed explosives that would take down the towers while still appearing to be demolished by the attack, also requires percision in explosive mass.  Precise placement also requires knowing exactly what level the plane would hit at, what angle, and how much fuel they would be carrying. If the explosive is on a timmer you need to know the exact time the plane will hit.(actually not a very difficult thing as all flights left on time that day), most likly if they were used it was a remote detonation.
                      Assuming you have all of this:  Why not blow up and collapse the building minutes or even seconds after the planes hit?

>>41 speaks the truth >>38 is filling this discussion with asshattery and idiocy

That the Bush administration has close ties to the oil industry is an understatement.  You could say the administration is motivated by and makes decisions based on the success of the oil industry, which in turn benefits the administration.  Bush doesn't just hire people based on qualifications, he hires people who are deeply tied to certain industries and happen to be close acquaintances, ie cronyism.  The Bush administration is a group of people with specific goals based on making the most money while in office, not just being in office for its own sake.          

You need to understand that jet fuel does not burn at a temperature that can melt steel. 

http://en.wikipedia.org/wiki/Jet_fuel

Steel weakens at about 1000 degrees and melts at about 2000 degrees.  Even if the steel was weakened, it would not cause a footprint collapse of a skyscraper at near freefall speed.  It would more likely twist or topple.  Even so, the steel would take longer than one hour to weaken or melt from a jet fuel fire. 

The bulk of the explosion occurred outside of the tower during impact.  Firefighters reported the fire in the building was under control.  The survivors in the tower were standing in the hole where the plane hit, waiting to be rescued.   Yet the fuel would have to be hot enough to melt steel and continue burning in order to destroy the other floors and cause it to collapse without any resistance from those floors.  If the fire had weakened the steel and simply died down before collapse, then the resistance of the floors below the impact would have slowed down the collapse, taking much longer to fall, and likely toppling to one side as the rubble from each floor piled underneath. 

Instead, you have to believe the tower can collapse as if all floors below the impact simply weren't there.  Jet fuel cannot melt through and destroy 100+ floors leaving molten steel at the bottom.  If the floors naturally collapsed, they would provide resistance, and yet they didn.t                

Bomb charges would cause large explosions to erupt if they were meant to destroy the tower.  But more likely, they were used to set off thermite.  Thermite has the ability to burn at over 2000 degrees and can easily melt through steel and any number of floors, as it goes straight down and melts through everything in its path.   

Learn how a thermite reaction works. 

http://en.wikipedia.org/wiki/Thermite

>>44
The weakenned steel buckelled.

Weakened/buckled steel doesn't let an entire building fall straight down at near freefall speed in ten seconds with no resistance from other floors. 

>>46
The impact dented the girders, it was then heated to a weak point where one poly crystal slipped past another causing a resonance cascade that resulted in the snapping of the support, the increase in weight casused the other weakenned sections of steel to give way, the weight of the portion of seperated building falling on the lower section caused that part ot collapse. After this the un-heated steel structure was affected only by the collapse of the outer frame.

>>46 Yeah.

>>42 Fail.

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