Righteous Indignation

Even from the farthest and most opposite side of the house (with the laundry machine on) there’s a certain tone of voice that tells THIS dad that an ensuing argument is manifesting. With righteous indignation I stomp towards their room ready and prepared to hand out swift justice. On the approach I hear my oldest tell my youngest that “you don’t always get what you want but if you play nice you may get what you need.” 
Stunned I wait and then the game commences again quietly. I step back and away slowly from their door…they did the work for me and I have nothing to add.