Actually, if you watch the collapse of the towers, you can see the way it buckles before collapsing. Look at any footage as close as you can and you see an area bent inwards. Then, it can take no more, snaps, the building starts to fall and kaboom.
Besides, thermitic material just means that aluminium and a ferrous metal were abundantly present in the burning building. Since the outside of a plane is aluminium and there were a lot of ferrous metals in the building, it would be illogical not to find it there.
Finally, do you think a government that couldn't cover up a break-in into a hotel could cover up the amount of men, time, materials, and other things involved in setting up explosives in a building and then having a plane crash into it?
My goodness, man, analyze things critically.
Actually before the corner "buckled" as you say, streams of molten metal was seen and recorded flowing from below that area. I agree with your choice of word when you say kaboom, because the top of the tower first started moving outwards and downwards, only to disappear in a cloud of dust without continuing its outwards momentum, this would either indicate that it did not meet any resistance from below, or that the bottom of the top block was being removed before it could impact with standing tower, so your recollection of that event is not accurate.
I am no scientist at all, but when they conclude that "The red portion of these chips is found to be an unreacted thermitic material and highly energetic.", then I pay attention, because that statement is extremely explosive politically speaking, or it would be if it was being discussed, but like I said, I doubt this will make it anywhere important.
And yes I definitely believe people are able to keep secrets from the masses.
The Gulf of Tonkin incident that started the Vietnam war was a lie, USA started that war, did you know that ?
USS Liberty was attacked and almost wiped out by Isreali fighter planes, did you know that ?
Both Bush Presidents were fathered by a convicted traitor to the USA, did you know that ?
Yes its quite possible for a govornment to keep secrets from its people, they do it all the time, day in day out.
Analyzing things is not the same as getting your information from the television, or from the fictional history we learn in school.