What is something that you consider yourself to be an expert or authority on? Who decides that you are an expert? What criteria do you and others use to determine that a person is an expert or authority on this topic? How is your expertise acknowledged and valued by others?

Think about a community that you belong to. This could be anything: an academic group, a sports team or gaming club, a faith community, a family unit, an online community dedicated to a specific topic, a fandom, a study group, a workplace, etc. Describe how this group constructs authority. In other words, what are the formal or informal processes or criteria the community uses to decide who within the group is an authority or holds specialized knowledge?