I typically sleep lightly, if at all, before major road trips; partially, this is because I want to sleep on the way, and partially because they’re so boring unless my mind is somewhat gone from being drowsy.
I don’t think I slept at all the time a friend and I went from southern New Mexico to Carlsbad. I also didn’t sleep much on the way there. And by the time we got there, of course I wasn’t going to get much rest: We had a cavern to walk down!
I walked down pretty much the whole cavern with no issues; I even got quite a bit out of it, in terms of appreciating natural beauty and our ability to build walkways deep within the Earth’s crust. I love Carlsbad Caverns and I would go back in a heartbeat.
Then we ate. I have to say, it’s easy to eat a lot of Mexican food, even if it isn’t especially good. I’d probably have a hard time losing weight in New Mexico.
After that, the sun had nearly set (we were in the last group allowed to walk down that day) and it was time to see the bats coming out of the caverns. It’s a wonderful example of how summing over a large enough number of chaotic samples can produce fairly deterministic behavior: Each individual bat is pretty much in business for itself, but overall they fly out in a pretty tight counter-clockwise corkscrew.
It was on the way back to Carlsbad from the caverns that I noticed parts of my mind were falling asleep. Mainly, it was my language centers: I’d start to think of a sentence (I usually think in paragraphs) and then I’d just … kind of … … …
[pause]
It’s not discomforting if you know what’s going on; it is, at worst, mildly annoying. I suddenly remembered the mechanism of action for caffeine, as if a part of my brain that didn’t quite understand reality was trying to be helpful, but mainly I was unable to come up with witty rejoinders for my conversation.
That night, as I was trying to fall asleep, all I could think about was inductive proofs, following an infinite staircase because they can get to the first step and, if they can reach a step, they can always reach the next step. Easiest. Dream interpretation. Ever.