Sorry I'm jumping in here so late, but...
There's one thing about this particular CT that totally baffles me.
There is indisputable visual evidence (indisputable to me, at least) that both WTC1 and 2 collapses began on the floors that were damaged by the aircraft impacts (plus or minus a few floors).
So how is this possible in a "controlled demolition" scenario?
Possibility 1: the towers were "mined" on the impact floors only. But for this to be true, the perpetrators would have to know in advance precisely where the planes would hit the building; furthermore, the explosives would have to NOT go off on impact, but rather be entirely undamaged (along with their wiring) so that they could be detonated nearly (or over) an hour later. [I assume here that there were no demolition engineers clambering around the damage area AFTER the impacts, setting and wiring up the charges on the burning floors!]
Possibility 2: the towers were "mined" throughout, from (say) floor 50 up. Then the planes hit the towers without setting off these charges, and someone figured out which floor to blow when the time came.
Possibility 3: As above, but only every fifth or tenth floor was wired, and the closest floor was selected.
Leaving aside the difficulty of getting those charges in place in advance without anyone noticing, of maintaining the integrity of the demolition charges and wiring through a ruttin' airplane impact and fire, and of coming up with an even remotely plausible motive for such actions...
How is any of the three possibilities feasible?
And why, if this were true, would the perpetrators not set off the charges upon impact? Why wait an hour? The calamity would have been far greater if the buildings had come down immediately rather than standing long enough for many occupants to escape.
The whole scenario just seems insane to me...