How many layers are there to the Onion of Truth about Black Tuesday?

The incineration of the World Tade Center Towers on September 11, 2001 and the rest of the murders that together total over 3,000 were quickly explained to us starting from the moment the attacks began.

This Onion of Truth quickly started shedding layers for some and slowly for most, others are still convinced that this onion is whole with no layers other than the one that those who may very well have commited this crime showed us.

For those of us who have been peeling away at the layers we see, a fairly common experience is thinking that you have something figured out only to find a different explanation that should have been obvious all along.

How Many of these Layers is there? If your answer is 1 or Zero your veiw is welcome too.

At what point will the Fumes from this Onion of Truth make even those who are not bothering to investigate this crime cry?

edit to fix typo in title

[edit on 3-2-2008 by ItsHumanNature]