If there is one thing that is obvious it is that we have grossly underestimated the terrorist up until this point. Continuing to do so would be folly.
As far as I am concerned that 9/11 attack was brilliant, fiendishly clever, and a total success. In many ways this Antrhrax sideshow is also fiendishly clever. Something about turning are own infrastructure against us. The terrorist are not stupid people and it is folley to assume that they are.