This normative judgment doesn’t affect Professor Wigmore’s argument. She does not refer to the way advertisements would ideally be framed.

This supports calling advertisements literature—but that’s not Professor Wigmore’s point. She argues advertisements should be covered in literature courses, whether they count as literature or not.

This doesn’t support the argument. Undergraduate literature courses help students develop critical skills in understanding texts, whether or not they cover advertisements, according to Professor Wigmore.

This makes concrete a key assumption by Professor Wigmore: that the department has an obligation to reduce the harmful effect on society created by people’s inability to understand advertisements.

This doesn’t affect Professor Wigmore’s argument. She concludes that undergraduate literature courses should cover advertisements, not that professors should be forced to cover advertisements even if they don’t want to.