There are subreddits that are more specific that operate in that market, such as r/askscience and r/askhistorians. In these subreddits, anyone can ask questions

There are subreddits that are more specific that operate in that market, such as r/askscience and r/askhistorians. In these subreddits, anyone can ask questions, but answers are given by people whose credentials is added as flair.