Socrates explains in his Ship Analogy, comparing the state to a complicated and large ship. In order for the ship to make safe passage it must have an experienced navigator who has knowledge of capacities of the ship, meteorology, water currents, navigational astronomy and the like. An ignorant person would not be able to guarantee safe voyage of the ship, the people in side, and its cargo.
“Imagine then a ship or a fleet in which there is a captain who is taller and stronger than any of the crew, but who is a little deaf and has a similar infirmity in sight, and whose knowledge of navigation is not much better. The sailors are quarreling with one another about the steering–every one is of the opinion that he has a right to steer, though he has never learned the art of navigation.”
“[The sailors] throng about the captain, begging and praying him to commit the helm to them; and if at any time they do not prevail, but others are preferred to them, they kill the others or throw them overboard, and having first chained up the noble captain’s senses with drink or some narcotic drug, they mutiny and take possession of the ship and make free with the stores, thus eating and drinking. They proceed on their voyage in such a manner as can be expected of them. Him who is their partisan and cleverly aids them in their plot for getting the ship out of the captain’s hands into their own whether by force or persuasion, they compliment with the name of sailor, pilot, able seaman, and abuse the other sort of man, whom they call a good-for-nothing; but that the good pilot must pay attention to the year and seasons and sky and stars and winds, and whatever else belongs to his art, if he intends to be really qualified for the command of a ship, and that he must and will be the steerer, whether other people like it or not–the possibility of this union of authority with the steerer’s art has never seriously entered into their thoughts or been made part of their calling.” (488c)
Still applicable today!!!