EVEN with John Derbyshire in the room, this e-mailer wins:

Since everyone seems to have their speculation hats on this afternoon regarding the Goss resignation, I figure this guess is as good as any other… and just as pessimistic…
It may have become clear to Goss that the W.H. will not allow the DOJ to pursue subpoenas or indictments in the WaPo/Mary McCarthy matter. If so, Goss may have reached the (reasonable) conclusion that he cannot succeed in rooting out leakers in the CIA if there’s not going to be a serious effort at prosecution.