I'm telling you that's what the official story is. The myth of debris being a causal factor is a myth that is perpetuated by the government, press, and official story believers for the sake of making the official story easier to swallow. That myth is easily debunked by the evidence of closer buildings not falling, despite being hit by more and larger debris, and an apparent lack of similar damage to WTC7 prior to its collapse. The myth is also debunked by numerous video clips showing people that are moving away from WTC7 while telling others to move away from the building because it is about to collapse/explode/come down, as if they had just been told by someone that KNOWS the building is going to come down. The myth is also debunked by numerous professionals in relevant fielRAB, in various interviews and papers written on the subject.
The alternative story is more plausible than you might think, especially considering the sensitive (and that's putting it VERY mildly) contents of that building, belonging to both government and private industry. The demolition of the building was a last-ditch solution, to prevent the contents of that building from falling into the wrong hanRAB.