You just saw a video ad that shows a man talking about the diet pill he uses. He doesn't appear to be reading a script, and the words at the bottom of the screen tell you he is not an actor. What technique has the advertising company used to persuade you to use the diet pill?
that he is not faking it and he really means it, it shows he is telling the truth and is a customer because there is not a script. so ethos, by the use of another character/celeberity
