are you saying be careful about bringing a fist to a knife or gun fight?
this is how stupid we are today. if you fight off an assailant with a knife or gun by socking said assailant with your fist hard enough to knock said assailant through st. peter’s gate, it ought to be considered the assailant’s risk not yours. this is not talking about beating up further on a fallen assailant of course.
I am not saying that. Simply that it is prudent to be aware of the need for witnesses, whether you are using a gun, an edged weapon, impact weapon, or just your two hands. I’d rather go to prison than get killed, but I much prefer not having to go through any of them. I believe proper reality-based gun courses also say something similar to what I said (having witnesses on your side).