You completely misunderstood me. As you can read in my initial post: I will ask questions from time to time. Questions which will be asked by others. I want you to show answers for this questions, details, evidences. Not just phrases. So as the "officials" has to be asked questions, you also have to face questions. And this is what I do: examine which arguments and evidences have more weight.
And no, I didn't even knew this was in Wikipedia, I heard it from a documentary called "911 Mystery" and read it on a web page I cannot remember, but it was not Wikipedia.
So there are some possibilities:
1) There were no bones on the rooftop and the message was faked
2) There were bones which are placed intentionally
3) The explosions of the buildings have blown them onto the roof
4) There were bones but they had nothing to do with the 911 incident
5) Somebody ate chicken on the roof

I remember a photo on which there were plane parts on a roof but nowhere else, only on this roof. So this is impossible. Is it also impossible for the Deutsche Bank's roof?
So you can see we can spread the possibilities and find more and more questions to any possibility.
So the bones thing is an argument versus argument topic.
We know there were no planes: Evidence are the videos. We know there were manipulated video material. We know many victims pictures are faked, we know passenger names are invented. For all this stuff we have evidences. But do not mismatch evidences with claims. Thank you.
Okay to make it clear: Do you have any evidences that the bones on the rooftop were faked, and that there was nobody who died? Evidences... just like the video analysis.
For the "Missing people", did you ever play the game "track the pack"? You have the phone numbers... you have the names... all you need is a recorder and call them. "Can I talk to xxxx, it's because of the job" or something like that.... just an idea.