In academia, in politics, in life, I often see two intelligent adults build a rift over a disagreement (large or small), fail to resolve it, and continue for the rest of their life with the rift in place.
It’s ego. It’s human nature. But it makes life more difficult. My advice (to myself and others) is to always let it go no matter what. Linger in the muck of anger for a few days, take a few naps, and then patch up the damaged relationship in whatever way that it will no longer be an anchor on your mind. The weight of conflict can take away the freedom to enjoy this short life and to form meaningful friendships along the way.
In politics, shallow bickering seems to be the modus operandi. Somehow it has become a commonly accepted notion that conflict helps win elections. Showing what someone else did badly is more effective than showing what you did well. Perhaps that might be the case in politics, but I still hold out hope for the personal interactions of regular human beings. There are very few conflicts I can imagine that cannot be resolved through a little swallowing of pride. It might hurt for a day, a week, a month, but it will make life more enjoyable, more productive, and more meaningful in the long term (years, decades).
I’m often reminded of the Borat clock radio “great success”:
There will always be someone with a clock radio that you can’t afford. Let it go.