-present an opinion on a controversial topic to the reader
-explain, clarify, and illustrate that opinion
-persuade the reader that the opinion supported in the essay is valid by
a. moving the reader to action
b. convincing the reader that the opinion is correct
c. persuading the reader that the opinion is at least worth considering
-support the opinion by means of giving evidence: facts, examples, physical description, support of authority, and statistics
-present counterarguments to the thesis and refute them respectfully and critically