The type of evidence that uses the viewpoint of someone with authority on a topic is called expert opinion or expert testimony. Expert opinion is based on the expertise, knowledge, and experience of an individual who is considered an authority in a specific field. It can help support or strengthen an argument or claim by providing credibility and expertise to the information being presented. Expert testimony is often derived from professionals, specialists, or academics who have in-depth knowledge in their respective fields.
The type of evidence that uses the viewpoint of someone with authority on a topic is called expert opinion evidence.
