A Martial Arts Moment:
I was thinking about some knife based Martial Arts, mostly Filipino based, that entertain the concept of “biomechanical cutting”. There can be some confusion with the term depending on the art or the practitioner, but the essence of the concept is the intentional cutting of muscles and connective tissues in the limbs so as to cause loss of function. Some artists have taken the idea as far as employing a blade as an almost “less than lethal” tool in a self-defense situation. They think they can use a knife to disable limbs while not killing…or intending to kill…an opponent.
In theory, I have nothing against “biomechanical cutting”; if your defensive techniques feature limb attacks and those cuts actually do disable limbs in a self-defense situation so much the better. But I question it’s efficiency as a “primary technique”…I will cut up his limbs so I wont have to kill him. That seems to assume an almost “fantasy level” of technical and physical dominance in a fight where you felt you had to employ a knife.
If you are going to argue that you were in such fear for your life that you had to draw a blade and you then went on to fillet the guy at will….I could see an attorney attacking that.
I see stabs as the analog of center of mass firearms hits and “slashes” like limb hits. Sometimes you may shoot at a limb intentionally because that’s the only target you have. If you are shooting from under a car and disable a guy with leg hits great…it was all you had and it worked. Developing a firearms technique that intentionally focuses on limbs as a “less lethal option” is fraught with issues. A gun is NOT a “less lethal” tool no matter where you shoot someone. Think otherwise and I think we start to wander into the “why did you kill him? Couldn’t you have shot him in the leg or something?” territory.
A knife is a deadly force weapon. I don’t know if I’d be willing to be a test subject for a legal argument that it can be employed as a “less lethal” tool. Even limb slashes can kill via exsanguination.
In conclusion, my personal opinion on knives as a “defensive tool” is that if I have to use one its going to be in a “kill or be killed” situation, and the best way to survive such a threat and sustain a legal defense, is to employ it as such.