Excellent job explaining this awesome exercise. There is nothing stupid about it at all. The GPS scenario helps put it in perspective. You have a talent for explaining music theory and ideas in a very understandable way. I appreciate you sharing this idea with us and I can't wait to get started on this. I'm a new subscriber after only seeing this video and I look forward to seeing the rest of your videos you have shared here. Greetings from Concord, NH!!