The "dark side" has an analogy in go. It is tempting to play moves that you know don't work because you think your opponent won't be able to figure out the correct response. It is usually not obvious to beginners that doing this is really holding them back.

Good point! I thought about including this connection between trick moves and the dark arts, actually. They don't seem quite parallel to me, but there are definitely similarities. If anybody is interested, you can read more about trick moves here.