"What we really need to know is how... how those buildings came down."
If explosives or thermite or nukes, or any type of conventional technology caused the towers to turn to dust as we so clearly saw, then the dust would be HOT. (The destruction would also have been loud, and bright.) That was not the case, therefore ANY CONVENTIONAL TECHNOLOGY, is by definition: REFUTED.
Add the fact that the dust particles were about the size of DNA, (the size of molecular structure of matter) and it is evident, irrefutable and conclusive that some High Technology was used.