I came dangerously close to having to punch a substitute teacher in my building today.  It was a very, very, very long afternoon.

I will likely provide the story later; let it merely be said for the moment that I just finished the second ten-and-a-half-hour day in a row and there will likely be a third tomorrow.  I am hungry and tired and I’m waiting to see if I get to a point where I can be a trifle more objective.  Gimme a couple of hours.

Between now and then, read this awesome article about unpowered human flight on Titan.  Once we overcome the temperature and the atmosphere, at least.