Hat tip: Owen posted about trying to one-man the AI control problem in 1 hour. What the heck, why not? In the worst case, it's a good exercise. But I might actually have come across something useful.
I will try to sell you on an idea that might prima facie appear to be quirky and maybe not that interesting. However, if you keep staring at it, you might find that it reaches into the structure of the world quite deeply. Then the idea will seem obvious, and gain potential to take your thoughts in new exciting directions.