A hospital wants to shorten the time patients wait to see a doctor in its outpatient department, and plans to add two more doctors to the morning shift. The plan will achieve its purpose only if ______. Which of the following best completes the statement?

Adding doctors can only shorten a wait that doctors are causing. If the queue actually forms at registration, or if there are no free rooms for the extra doctors to sit in, the new appointments will change nothing. That condition is what the plan silently depends on. Pay, opening days and patients' preference for a familiar doctor are secondary and would not by themselves defeat the plan.