Reply #102: explosives were not necessary to bring those buildings down

[plaguepuppy]

The security and other issues are at best speculative, and the idea of tight security at the WTC is quite a joke, but the issue of the physical possibility of the collapses without explosives is not dependent on any of those things. It depends quite independently on the actual events of the collapses as witnessed by various kinds of direct evidence, photographic and otherwise. And certainly how many people didn't see something says nothing about the evidence of those who did.

The physical world is a complex place, but is subject to rigorous physical laws that do not care what we think or what we consider possible or impossible. And those laws, based on my 30-some years in science and engineering, simply do not comport with a collapse caused by nothing but plane collisions and fires.