 Because the resolution does not explicitly state that a certain value premise must be used, debaters often must debate which value premise should be used to evaluate the round.In order to support the affirmative or negative side's value premise, debaters attempt to prove why their value premise is more relevant to the resolution, or why their opponent's value premise is inferior to their own.In some cases, debaters who have chosen common value premises may agree after presenting each side's constructive on what the value premise should be.