Bunty: The primary job of police officers is keeping the peace  Since their subsidiary jobs, such as controlling traffic, hinder their performance of the primary one, people other than police officers should be hired to perform the subsidiary jobs  Naina: To perform their primary job well, police officers must have the trust of citizens
They gain that trust by performing their subsidiary jobs, which are the only functions most citizens see them fulfill
whether the subsidiary jobs police officers perform enable them to perform their primary job effectively