The Temperature Magician

In a recent posting titled "Sharpening", I wrote: Many people can guess the current time to the minute whenever they pop awake in the middle of the night. It feels like a superpower, but it's not. Whenever a cashier adds you up, flash a total. Don't calculate. Don't try to be right. Just quietly flash a number, with zero effort. Pretty soon you'll get super good at it. Whenever you check anything, flash a result. Nothing obsessive or emotionally fraught. Don't be like a daft compulsive gambler trying to game absolutely everything. Just flash a result, calmly, and see how you do. Then don't give it another thought. Let subconscious calibration happen. Keep this up as a long game, and you'll get like Nostradamus. I bought a bunch of cheap little temperature and humidity sensors from Xiaomi, and left one in every room. Mostly to help decide if I really need AC, and to track effectiveness of open/closed blinds and fan placements. When I enter a room, I guess the temperature, very…