Crazy anxiety dream last night. Dreamt I was taking some kind of math or science test, and not doing well. As I struggled with the exam, the thought occurred to me that my mind had undergone some kind of chemical change that rendered it incapable of learning about topics in which it's not interested.

Come to think of it, that's the story of my thirties so far.

Among other things, I ascribe the dream to the fact that I was recently trying to demonstrate to myself that the Pythagorean theorem works. I didn't have much luck. Math never was my strong suit.