Someone in the room always says exactly what should be done, is heard politely, and is ignored — and the epic records the advice each time
Where it is argued
Vidura's counsel on a sleepless night — A king who cannot sleep sends for the half-brother he has ignored all his life, and is told exactly what to do while there is time to do it
Who embodies it
Vidura — The half-brother kept from the throne by his mother's rank, who gives the correct advice at every turn and is overruled at every turn.
Dhritarashtra — The blind elder brother passed over for the throne and left holding it anyway, who can always see what his son is doing and never stops him.