Journalists do not eliminate all of the biases that enter their reporting. Trained editors are able to detect at least some biases of journalists. Journalists' reporting that is not objective is not taken seriously by trained editors. It is imperative that reporting be as objective as possible.
Despite the best efforts of journalists to be objective, it is inevitable that their own biases will enter their reporting, even if inadvertently. Ttherefore, it is imperative that a trained editor look over journalists' work with an eye toward detecting and removing their biases, so as to make reporting as objective as possible.
Each of the following is an assumption on which the argument depends EXCEPT: