In the 9/11 Revisited film, an "expert" says that if you know anything about bringing down a building that you have to go to the under-infrastructure to bring it down.

As I have written here before, I was very close to the scene, in lower NYC, on the morning of 9/11. On the way home from Manhattan, I met an architect on the subway before the buildings collapsed, and he described to me exactly what was going to happen, because those buildings were built to collapse straight down to minimize destruction of the surrounding areas. This is exactly what happened when I turned on the TV upon returning home.
The people that insist that the use of pre-planted bombs was the ONLY way those buildings could have collapsed under the circumstances have other agendas.

A child asks, in the opening of the 9/11 video, in a letter to the president (which her mother probably wrote for her), "Did you know 9/11 was going to happen? If you did, why didn't you stop bin laden?"
They're getting pretty desperate for support when they start using children that know nothing!