I disagree. Whatever way you use to work it out, increasing the amount of violence is always a worse option than not increasing it.
Whether you use maths to do it - where the staus quo is 0 and violence is -10 let's say, so staus quo + violence = 0 + -10 = -10, and then the addition of violence to 'counter' the origional violence is -10 + -10 = -20; or whether you use the Zen "negation of the negation" - "this violence is wrong; this violence is not wrong; this violence is really wrong" - you arrive at the same answer. Upping the amount of violence always produces a worse result than not.
Not really. I think this is at the core of our issue in the other thread too. First off, you are assuming a Zero Sum System, which I'm not certain is the case. Second lets look at a hypothetical situation concerning violence:
I'm sitting in my living room typing this thread to you and someone kicks in the door (to rob my place) and sees me sitting here staring back dumbly. He shoots me in the head and proceeds in. My wife, hearing the shot, gets the shotgun from the safe and hides at the end of the hall. When the gunman walks to the half way point she shoots him and cuts him in half.
Now according to your math we are at -20 (2 deaths). The problem is that if my wife hadn't shot the gunman he would have killed my wife and my 3 kids. Again, according to your math that would put us at -50 (5 deaths, the gunman survived).
Now is where the distinction between MURDER and KILLING comes into play. What the gunman did in killing me (and later my family) is murder. What my wife did is defend herself and her family in the face of unprovoked aggression.
According to my math, murder is -10, self defense is 0, and each saved life is +10. That means in the first case we have a +30 (-10 for me, 0 for gunman, +40 for wife and 3 kids). In the second case we still have a -50.
As you can see, my wife increased the amount of violence in the equation to reduce the overall amount of violence that would have occurred. The result is the use of violence to create a NET POSITIVE RESULT