Yet for all that the medium has already said on the subject, the two most recent episodes of The Pitt, “1:00 P.M.” and Thursday’s “2:00 P.M.,” prove that these depictions needn’t be redundant. When the Pitt’s heroic charge nurse, Dana (Katherine LaNasa), steps away from her inundated desk to perform a sexual assault examination, the show’s real-time storytelling gives viewers a startling, unabashedly educational look at a process whose slowness and need for precision are rarely captured on TV. Then, once the patient has been discharged, it delivers a devastating reality check that suggests this necessary ordeal can also, too often, be an exercise in futility.