there is a certain degree to which both scenarios can be true or false
Sigh. This is just like O'Reilly and the "the truth lies somewhere in the middle" bullcrap.
I'll give you an example.
I think you are retarded.
You claim you are not.
"There is a degree to which both are true"
Therefore you are somewhat retarded.
Guess what. In the real world, it's possible for one side to be completely right and one side to be completely wrong.
The 9/11 conspiracy theorists, like the Creationists, are completely wrong. They cherry pick "facts" (often unwittingly) and ignore the blatently obvious.
If you HONESTLY believe that there was some sort of GIANT conspiracy which has remained secret all this time, then you have some serious issues and no amount of reason or logic is going to dissuade you of your belief.