Making your martial art street effective. It is my first attempt at crossing over from a streetfighter perspective to a martial arts one. There are a lot of people who can teach you martial arts, but there are few who can teach you self-defense. What it is meant to do is to point out that there is a difference between the two - and the difference can be lethal.
Nobody knows everything there is to know about self-defense, much less the martial arts.
Any single aspect of the arts is an ocean unto itself. Not only is it vast in distance, but it is deep too. You may know everything he knows, but he doesn't know anything beyond his area of expertise. You have to journey out on those oceans yourself. You have to sail to far exotic places, to learn and understand all the myriad possibilities and issues that are contained in the martial arts.