I might not be an architect or and engineer, but these guys are.
Architects and engineers for 911 truth
"Ronald H. Brookman, structural engineer, with a masters degree in Engineering from UC Davis, of Novato California, writes: "Why would all 110 stories drop straight down to the ground in about 10 seconds, pulverizing the contents into dust and ash - twice. Why would all 47 stories of WTC 7 fall straight down to the ground in about seven seconds the same day? It was not struck by any aircraft or engulfed in any fire. An independent investigation is justified for all three collapses including the surviving steel samples and the composition of the dust."
Paul W. Mason, structural engineer, of Melbourne, Australia, argues: "In my view, the chances of the three buildings collapsing symmetrically into their own footprint, at freefall speed, by any other means than by controlled demolition, are so remote that there is no other plausible explanation!"
"In my opinion WTC7 was with the utmost probability brought down by controlled demolition done by experts" -Hugo Bachmann, Professor emeritus for structural analysis and construction at ETH and former Chairman of the Department of Structural Dynamics and Earthquake Engineering, Swiss Federal Institute of Technology.