The reason an imprisoned sociopath wins is the same as a highly trained military operator… or really anyone who comes out on top in physical violence. Not because of hate or rage or training or practice, but because of debilitating injury. Period.
Before we can discuss the principles that underlie game-changing/game-winning injury, we must cover some baseline assumptions for how to make the choice to “pull the trigger” on physical violence, in other words, first principles to drive the decision-making process and initial contact.
The essential problem is one of variability in the amount of force used, or the fact that half-measures expose you to greater risk.
If you don’t want to hurt him, chances are you won’t — but you have no idea what’s going on in his head.
It’s the old “slap a killer” problem. Letting him know what’s up without shutting him down, pissing him off, or even intimidating him to the point where he pulls that gun are all ways to end up horribly surprised.