Let me give an example of how this phrase could be used.
"In the United States, before 1968, the 'Hays office' censored movies. They were the judges of what moviegoers could or could not see. Then the MPAA ratings system was adopted. Now, movies can show almost anything, but a rating warns moviegoers about adult content. This is a better system, because the audience is the best judge of what it wants to see."