Not at all, Cavynaut, you are obviously one of the more open minded and reasonable commentators on the issue - apart from me of course.
A more down to earth spanner in the works of the official explanation can be found at Pilots for 9.11 Truth.com, where people have been decoding the Flight 77 Flight Data Recorder. It seems that the flight deck/passenger cabin door did not open so much as once during the whole flight. The door sensor checked door status every 4 seconds, and it has been established that it was working properly.
How did the hijackers manage to storm the cockpit , eject the crew from the flight deck and everything else without opening that door ?
The FDR already has it's ID number missing, a first, the cockpit voice recorder data was apparently unusable, another first, and now it would seem the hijackers were superhuman ninja acrobats.
Information already made available by the NTSB has shown that the plane was too high to have descended and hit the Pentagon, and that it didn't even fly over the lamp posts it was supposed to have knocked the tops off (even though they had been unbolted and laid on their sides by somebody anyway)
I think it is safe to say that the black boxes scrutinised by the 9.11 commission were not from a plane which had flown into the Pentagon.
Added to all this, a few weeks ago WikiLeaks published pager traffic on 9.11 :- nobody mentioned an airliner flying into the Pentagon. Most reports talk of an explosion on the helicopter pad or a light aircraft crashing nearby.
Then there's all the reports of burning buildings on Washington Mall, a plane crashing into the 14th Street bridge in Washington, and even a second plane flying towards the Pentagon, detected just after 11a.m. - a good hour and 20 minutes after the grounding of all civilian flights, with F16s scrambled to intercept it.
Where did all those stories come from? Why have they never been explained?
Apart from the long established glaring dissimilarities between the small white object filmed hitting the Pentagon and a Boeing 757, now we have this. It's taken 8 years but the official account of Flight 77 is falling apart at the seams.