Are you suggesting the airplane debris found on nearby rooftops and on the streets below just happened to be there? The pieces have indeed been identified as having come from the planes that crashed.
If you look at the information available to you, I think you will reach a point where you learn that with respect to plane parts all that you can ever say is that things have been found that are "said to be plane parts." There have not been any identification of anything as plane parts based on valid forensic investigatory techniques, let alone identification of parts from the planes said to have been involved on 9/11.
Instead, the situation has always been centered on presumption. It has been presumed that the claim of jetliner crashes resulting from hijacking of certain flights was correct. Therefore anything that looked like it might possibly have come from a plane, of which there are, perhaps, a sum total of, what, 10 pieces for the 2 jetliners alleged involved at the WTC, have simply been assumed to be that of the hijacked planes, without forensic proof.
Further, a practice that is sometimes employed in this thread by posters has been used more generally as well. You will have noticed that when posters fail to refute a specific NO PLANE claim, a tactic frequently used is to say, rhetorically, of course, "what about all the other evidence from all the other sources." The 9/11 investigation, such as it was, was also premised on that kind of process; namely, that since there is no doubt about what happened, what happened didn't have to be proven.
You do recognize, of course, that that is how deception works.
Are you suggesting the debris was planted?
1--I have previously posted a photo essay showing a process of planting of the so-called jet engine part at Church and Murray.
2--I have called attention to the fact that the photo of the perimeter beam with wheely stuck in it appears to have been planted.
3--I have called attention to the photo deception associated with the Church and Murray so-called jet engine part that makes it look larger than it is.
4--I here also note that the placement of pieces of junk in a dumpster with handwritten letters "plane parts" "FBI" and "NTSB" firmly show that no proper investigation was taking place.
5--The claim that jet engine parts were dropped off, literally at the dump, Fresh Kills dump and left there is stupid, on its face, and confirms that there was no investigation whatsoever.
6--I here assert that the claim of planting evidence cannot ever be falsified because the so-called plane parts were not handled in an investigatory manner. If you dump plane parts into a dumpster without marking them and identifying them, there is nothing at all that prevents someone from walking up and throwing things that weren't there into the pile. If you trace a plane part to the Fresh Kills Dump -- an engine no less -- then you're claim as to where it came from is hopelessly compromised.
Or perhaps you think they were holograms?
I think the evidence of holography is quite strong. The complete lack of the sound of jetliner is a key indicator that a "bad special effect" as it was called by an eyewitness, Evan Fairbanks, was carried out.
Note: 2 types of evidence are mentioned in my post re holograms:
1--Lack of sound;
2--Eyewitness account.
Before asking for "more proof" as is the wont of posters around here, please consider providing an assessment of the evidence already given.