Taking turns required patience and self-restraint. Rules of etiquette made courtly social relations less impulsive, and impulse is what usually led to violence. Impulse control, on the other hand, led to order. Manners can be imitated, and change can ripple through a society with often unexpected consequences. The problem is that manners are deeper than a few surface rules.
Manners shape an individual's self-concept.
They take centuries to permeate society, not a few days. There is an expectation that polite and predictable behavior will give social interactions the sanity, tolerance, and safety that everyone wants, but it has some flaws. Courtesy must reflect an individual's inner self or the superficial veneer can lead to empty gestures easily dismissed. If New York's mayor succeeds, we can hope that having tried civility, everyone will like it and keep at it. John insists that worship is felt, experienced, and expressed in context.