It's both amusing and educational to observe a consensus when it suddenly starts to give way at all points without yielding an inch. A couple of weeks ago, the consoling view was that Maj. Nidal Malik Hasan was a man more to be pitied than feared, a full-blown officer in the U.S. armed forces who was too shaken up by the stories of returned veterans to be able to function properly, and a physician too stressed-out to bear in mind that there was such a thing as a Hippocratic oath. Why, even the FBI had interpreted his e-mails to Anwar al-Awlaki as quite "consistent with research being conducted by Maj. Hasan in his position as a psychiatrist at the Walter Reed Medical Center."

That latter finding does not stack up very well with the disclosure that the major was imploring...