From Amos, 12 hours ago:

"I am about to leave for the hospital, to deliver my weary bod into the hands of the Boojums and the medicos for a few days. I am particularly intrigued by the prospect of 4-6 hours under anaesthesia while my plumbing gets reconfigured. I would prefer to sit on the ceiling watching every move, but my spiritual powers may not be up to such prowess as an act of will. So I may just slip into darkness and (I would hope) slip back out again into wakefulness at the turn of a valve by some kind anaesthesiologist who (one hopes) is paying close attention."