What is it? I kept waking up at 4am, 3:30am, 4:30am all this week. Towards Thursday I was getting "sleepy stupid". Here's an instance. I gave my kids an assignment to read their calculus book to find interviews with people who use math and famous "dead people who did math". So what did I put on the board, even though at full alert capacity I know better, and even though it looked funny, but I was too sleepy to complete the thought that maybe I should check it? .... MATHEMATITION. Very embarrassing.
I wonder how many of our kids would be "smarter" if they actually got more sleep.