[Fletch]

The single biggest and most obvious debunker of 9/11 conspiracy theorists is this:

In order for what they think happened (and they all have different wacked out theories) to actually happen, THOUSANDS of people would have to be keeping the murder of 3000 American citizens by their own government a secret. Think about that.

Think about the logistics that would have had to go into such an enormous undertaking and the number of people necessary to accomplish it. If you believe even a fraction of what Roundhead spews around here, you're talking about demolishing two of the biggest buildings on the face of the earth, making airplanes and passengers disappear, firing a missle or planting a bomb at one of the highest profile buildings in the world, giving orders to ground or delay military responses, somehow encouraging or manipulating a known terrorist group into taking credit for the action, dictating that countless law enforcement agencies inspecting the aftermath ignore evidence pointing towards such a plot, and on and on and on. The number of people that would have to be involved in such a plot is mind-blowing.

And now think about the number of government "secrets" only held by a very small number of people that routinely become public knowledge and tell me that the THOUSANDS of people that would have had to been a part of such a convoluted and nonsensical conspiracy have managed to keep quiet for five years.

This is something even the most creative conspiracy theorist simply cannot dream up an answer to.