There's different types of social rules. Most of the responses talk about the baseline rules (listening, empathy, etc.). There are also, for lack of a better, c

There's different types of social rules. Most of the responses talk about the baseline rules (listening, empathy, etc.). There are also, for lack of a better, class rules which are designed to be opaque and inherently meaningless. They only matter as a way to check if you came from the right background and connections. If you did then they'd have taught them to you and if you didn't then the point of them is to get you excluded. The class rules exist both in the broader social class division but also in subgroups of people who have their own in-language or expected behavior. For example, silicon valley tech bros have their own set of class rules designed to also exclude people without the right background or connections to know them. Keep in mind that many people think these are just the "proper" way to behave rather than meaningless rules implicitly aimed at excluding others.