Tonight I joined Quora (It’s like Yahoo! Answers for smart people) and spotted the question What does it feel like to be stupid?
The best answer is from an anonymous user who suffered from an arterial problem which reduced the blood supply to his heart and brain, making him forgetful, slow, and easily overwhelmed…
However, once I got used to it and resigned myself, it was great. Even though I knew I had a worrying illness, I was happy as a pig in mud. I no longer had the arrogance of being frustrated with slow people, I abandoned many projects which reduced a lot of stress, I could enjoy films without knowing what would happen (my nickname before this used to be ‘comic book guy’ if you get the reference), and I became amazingly laid back and happy go lucky. I got on with people much better. I developed much more respect for one of my friends in particular who I always considered slow – it turned out he is much deeper than I thought, I just never had the patience to notice before. You could say I had more time to look around. The world just made more sense. The only negative, apart from struggling to perform at work, and having to write everything down, was that I no longer found sci-fi interesting – it just didn’t seem important. (I’m not joking, although it sounds like a cliché.)
(via What does it feel like to be stupid? – quora.com)
He did recover, and you will be pleased to learn that he regained his love of science fiction.