[mateo-]

I recently read the 80/20 book and it had a good section about giving your subconscious something to chew on.

Our subconscious churns through a lot without us really realizing it. In the book, he suggests thinking/working on something and stepping away with intent when you get stuck to let your mind wander while your subconscious gets to work.

I think this is a similar concept. You don't necessarily need to be stuck, but while you're away from something your mind puts all the "files and folders" away neatly.