The theory is that most physical confrontations some say upward of 95
percent end up on the ground. Thus, the well rounded combatant who is proficient in ground fighting
will have a clear, definite advantage once the conflict goes to the ground. All of one's stand up training in the striking arts will instantly "go out the window
." One well known jujutsu family says it like this: "I am like a shark,
the ground is my ocean and most people don't know how to swim."