9/11 Conspiracy Theories,Controlled Demolition Hypothesis

The controlled demolition hypothesis is the disputed proposition that the World Trade Center was not destroyed by the planes that crashed into it as part of the September 11th attacks, nor by the fires that followed, but by explosives or other devices planted in the buildings in advance.
Though the findings of the National Institute of Standards and Technology (NIST) do not suggest that controlled demolition was involved, the hypothesis has become central to the 9/11 Truth Movement.
The most detailed statements of the hypothesis have come from Steven E. Jones, Kevin Ryan, Jim Hoffman, David Ray Griffin and Webster Griffin Tarpley. In making their case, they often emphasize the collapse of 7 World Trade Center, which was not hit by a plane.