This is a roundabout way of saying that while al-Qaeda may be resistant to tactical setbacks, it is by nature susceptible to strategic failure. Once it gets itself into a conceptual rut, or its leadership goes off on a tangent, there is little the mass base can do to rescue it from itself. Thus, the history of clandestine organizations is not one of evolutionary progress but succession. When al-Qaeda falls far enough from accumulated setbacks it will be challenged by another clandestine organization with a new and possibly better strategic vision. Therefore what is likely to happen in Iraq, and possibly in the world at large, is that al-Qaeda will continue to decline until a new and better adapted Jihadi group makes an appearance. If there is a next September 11 it will be launched by a new organization, possibly an offshoot of the old, which has been gathering unnnoticed in the shadows while we continue to beat up on Osama's old jalopy.