In my old age, I seem to have developed the uncanny ability to lie in bed for long periods of time without either sleeping or going bonkers. I went to bed at 11:30 tonight, but I kept thinking of one thing and another and was getting less and less sleepy. I was VERY relaxed, though.
I thought about this and I thought about that. I decided what to do with the wood when a big tree out the road finally falls. I think I figured out a way to make a treadle-powered grindstone stand using wood and pipe fittings. I thought of some other things that I wanted to do, also. My mind didn't exactly bounce around like a rubber ball, but I certainly didn't lack for entertainment. Finally, I decided that enough was enough and got up and came downstairs. The time was 2:30 and I hadn't been asleep yet.
It's 3:00 as I type this. I hope I get to feeling sleepy before long, as there's so little to do when I'm up and around at night. I guess I could go back to bed and think some more!