One time at university I was up late working on a math assignment, but couldn't figure out one of the problems. I fell asleep and had a dream in which I came u

One time at university I was up late working on a math assignment, but couldn't figure out one of the problems. I fell asleep and had a dream in which I came up with the solution. I woke up briefly, wrote down the answer, then fell asleep again. When I got the assignment back from the TA I had gotten everything correct, except for that problem, which he had marked up with red question marks and exclamation points. I looked at what I had written and found it to be incomprehensible nonsense...