Well, I have a longstanding rule (since college!) that while 3 hr. 35 min. plus of sleep is just about tolerable and can get me through the day, less than that is not OK, and since insomnia still has me up and the alarm is set for 5:45 (3 hr. 10 min. away, even assuming I were asleep just about now), I am instead going to write heartfelt apologies to the clinic-holder and the clinic-organizer, tell them that I will pay for it and that I am sorry I have used up a spot that someone else would have liked, and turn off the alarm clock.