The AssumeGoodFaith pattern is from the Meatball wiki. For some reason, it's stuck with me, perhaps because the Meatball documentation of the pattern is excellent. It's also a fundamental principle of Wikipedia.
Whilst I don't always follow this pattern, and probably even hypocritically wield it at others more than at myself, the basic point is a good one: in even slightly ambiguous situations it's better to keep calm than to blow your top, sepecially online.
Type: Etiquette Pattern