The Moral-Progress Problem
This video presents the same text shown beside it, spoken and on screen. It adds nothing the text does not say.
State
If cultural relativism is true, moral progress is impossible; a change in a society's code is movement, never improvement, because no standard outranks the code.
Show
Call the end of legal slavery progress and relativism corrects the verb: the code changed. Better requires a measure the theory has removed.