I was wondering what is the substantive difference between a 3rd Dan BB, 7th Dan and 10th Dan in Hapkido. What do you have to do in order to progress from one to another? If you have a higher degree than someone else, does it necessarily make you a better fighter? Does it make you more street effective? I guess this question would be valid for Taekwondo, Karate and other arts as well, but maybe in Hapkido it means something different.