answer:The answer to this question is as diverse as personalities are to people. An answer of “you should know this” could be someone encouraging you to “follow your gut”, or it could be a statement, rather than an answer. We may have no idea why someone could make that statement, either through personal knowledge of the asker, or it may be a topic where they feel “everyone should know that!”. Everyone is different, some more assertive than others, some more knowledgable than others on a particular topic. My suggestion is to review all answers, ask questions to clarify those that confuse you, and toss aside those that you have no use for, don’t overthink it.