I recently had a dream where I was solving a problem in a class. The problem was something you would come across in real life. It involved multiple steps, and there was no one right answer.
The instructor had a unique apparatus to find out if a solution would work: She’d put a metallic hat-like structure on your head. Doing a mind probe, the apparatus would find your solution. If your answer was bad, it made an awful cacophonous sound. If the answer was good, it played a beautiful song with harmony. The more harmonious the song, the better your answer.
Someone should invent that machine. We could test out all kinds of ideas beforehand and save ourselves a lot of trouble.