The building was on fire and beams weakened...I'm not a structural engineer...
Firstly see how your first instinct to my message is to answer me instead of actually searching for the truth, and how you conveniently miss my point regarding larry silverstien saying on live television that they decided to bring down the building through controlled demolition, secondly do you really think that I have not spent countless hours doing the necessary research before reaching to a thesis that 911 was a false flag? the so called simulation of the NIST 2008 investigation funny how the video "explaining" the collapse of building 7 fails to actually show the complete simulation at all? if they would you would see that in the simulation the outer pillars and walls collapsed on inwards to the center but that's not how the real building collapsed, the outer wall and structure went straight down, also the mathematical data the NIST investigators came up to present this simulation was never released to the public eye meaning that no independent tester can confirm this simulation.
Thirdly even if the collapsed of the building 7 happened due to office fire it is impossible for the collapsed to actually happen at free fall, the structure of the building present below would slow the decent of the building, free fall means that there was no structural resistance to the fall at all, NIST investigation first tries to deny this but later in the presence of overwhelming evidence they accepted it, here is an explanation regarding free fall with evidence provided and also questions raised to the NIST investigators and see how they respond and btw this is high school physics and I am spoon feeding you this instead of you looking this up yourself.
Fourthly the NIST investigation was never peer reviewed and took place 8 years after the actual event, heck the metal from the building debris was melted down and shipped off years before the investigation took place, this investigation was like an autopsy without the actual corpse, tell me this when ever a disaster happens whether it be of a collapse of a tower or falling down of a plane, the investigation of any event starts almost immediately so that the cause of the incident is known and so that type of event never happens again, this investigation doesn't start for 8 whole YEARS.
Video of plane wreckage inside the flooded Pentagon...you @#$!
What I meant and what you again conveniently did not mention is that if a plane that was traveling more than 30 miles per hour hits the pentagon where was the damage to the pentagon building from it's 15 meter wide wings? If the plane did not disintegrate and the wings did not enter then where is the wreckage of the plane meaning the wings and the tail from all the pictures and videos that were taken initially?
Also while you are at it also explain me this, the official investigation states that all four of the black boxes from the crashed planes were damaged and none of the voice recorders were salvageable, how is that fvcking even possible because a black box has the capability to survive extreme heat for a long period of time and not one but all four.
And speaking of dozens of eye witness accounts and the complete documentary regarding the whole event.
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