When we are writing about certain topics, such as people or places, we should write what we know. What is the truth and not make others damaged. Therefore, we should have knowledge on the subject, we write.
When we write about something like. Persons or places We should write what we know. What is the truth and not to harm others. So we should have some knowledge of what we wrote.
When we write about something, such as a person or location. We should write what we know. What is true and don't make others damaged. So we should have knowledge of what we write.