Done

Walked out of my exam confident, but with a nagging doubt that I might have made a binary inversion between correctly reading a word on a page and understanding it, and acting on that word. (Specifically, I may have read the word "floor", thought "floor", said "floor" under my breath, and then proceeded to act as though it were "ceiling"; or vice versa) So I sent an e-mail to my professor asking him to confirm for me that I hadn't gotten confused when he got to looking at my exam.

I just got his reply.

I'm graduating!