The current troop surge, after all, appears to be working precisely because American commanders learned from the mistakes of the first three years of the war.
There's no reason to believe that al Qaeda can't adapt just as well.
Even the New York Post wants to hold out hope for Al Qaeda.
Keep at it, General Petraeus. Al Qaeda can't adapt if they're all dead or in captivity.
Think Kassarine Pass...
After that debacle, American Forces NEVER advanced enmass without Artillery support again..