Good point

CalPundit has an excellent observation about the WMD false alarms, and why the Pentagon keeps releasing the "preliminary" information before the test results are confirmed:

...[T]hese reports aren't aimed at journalists or news junkies like blog readers. Rather, they are designed to build up a vague impression among casual news consumers that we've been finding WMD all over the place. Say it often enough, and everyone starts to get foggy about which reports panned out and which didn't - or even whether any of them did. Most people are simply left with the idea that we have lots of busy teams spread out all over Iraq and they keep finding stuff.