...in part because I know I have a short temper when I'm overly tired.

Me, too, and for another factor I now know to be blood sugar-related. On the day before Interaction, I'd arrived at the SECC just off the train from York, found no place from which I could work, knew I had to eat something or risk keeling over, but also knew that there were a whole bunch of Events issues piling up even as I stood there. I grabbed one of the not-too-great sandwiches from the shop and -- there being no place to sit, went and sat on the floor in a corner of an SECC hallway. As I sat there desperately trying to eat quickly without choking -- I just wanted about five or ten minutes -- an otherwise well-meaning fan whom I know came over and started cheerfully burbling at me.

It's not his fault that I snapped at him. Just too many things had piled up at once, and he had the misfortune to be the straw dropping on this camel's back. He was certainly stunned by the loud nature of my outburst -- I can get really angry -- which was all out of proportion to the situation.

Knowing how much trouble I can be, I work very hard to try and keep it under control, and possibly I end up coming across as a bit distant in stressful circumstances.