16. T F When your general purpose is to persuade, you act as a teacher or lecturer. 17. T F The difference between informing and persuading is like the difference between teaching and advocating. 18. T F When your general purpose is to inform, you act as an advocate or an opponent. 19. T F The specific purpose statement indicates precisely what the speaker hopes to accomplish in a speech. 20. T F The specific purpose reveals more about the content of a speech than does the central idea. Â