You didn't say it, you implied it by stating that each floor takes at least 0.5 seconds to fall 12 feet, then the next floor takes 0.5 seconds, and so on. In order for that to happen, when the falling mass hits the floor it has to come to a complete stop, so that the floor it is impacting can start from 0 velocity and fall only under the influence of gravity. You are ignoring all of the momentum of the mass falling onto the floor to start it moving. Funny, enough, this is the exact same mistake Judy makes in her billiard ball nonsense.
Well, you're the one who is claiming a floor crashing down onto another floor, not me. I don't think it happened. I think the floors (and almost everything else) got turned into dust while it was sitting there, stationary. Then the dust fell.
Just to be explicit: I understand that an object impacting another object imparts a force onto the second object. I am actually not an idiot and did get good grades in high school and college physics. I didn't take physics in grad school, but I'm guessing a minority of JREFers have, either. And the ones that did have only a few research scientists among them. Engineering isn't a research science. Neither is architecture.
This is important, because what I'm claiming is that advanced technology was used to destroy the World Trade Center. If it wasn't DEW, then it was something else, but it wasn't anything that a graduate level research scientist with good basic education in physics (me) already knew about on 9/11. I knew I'd have to learn something before I understood what destroyed the World Trade Center. I wasn't so arrogant to think that it must have been something I already knew about on the day of the attacks.
Why is research science a relevant field, as opposed to, say, architecture? Because architects are not trained in explaining previously undescribed phenomena, as research scientists are. Even engineers use technology to solve problems and do not do research science (except a minority).
If you have to figure out a difficult science problem using only forensic evidence, I don't see how engineering helps other than the basic science and math education. Research is an entirely different thing compared to engineering.