So is the line drawn in the amount of damage in the fight resulting from the "fighting words" or is it drawn at the words that were spoken that lead to the fight which had unacceptable injuries? Or is there a sliding scale that certain insults are worth a bruise but not a tooth knocked out, but other words can justify a broken jaw but not a crushed larynx? At what point does the speaker have total responsibility for the listener's rage and physical strike, at what point does the listening attacker start being responsible for their physical reaction to sounds in the air? And what if the insulter is attacked but then the insulter pounds the one they were insulting? They both started it and ended it with the most damage inflicted. This all seems very complex and would involve some sort of mathematical association of numerical values to verbal statements that are counter-balanced against the actions/results of a physical altercation.