Mimics are fundamentally a way to communicate one another
When two people talk, they don’t just fall into physical and aural harmony. They also engage in what is called motor mimicry. If you show people pictures of a smiling face or a frowning face, they’ll smile or frown back, although perhaps only in muscular changes so fleeting that they can only be captured with electronic sensors. If I hit my thumb with a hammer, most people watching will grimace: they’ll mimic my emotional state. This is what is meant, in the technical sense, by empathy. We imitate each other’s emotions as a way of expressing support and caring and, even more basically, as a way of communicating with each other.
Morality binds and blinds. It binds us into ideological teams that fight each other as though the fate of the world depended on our side winning each battle. It blinds us to the fact that each team is composed of good people who have something important to say.