Well, you know, that's just, like, Plato's opinion, man. (Or maybe Socrates's.) Plato's opinion, that we accurately know what it was 2300 years later, because

Well, you know, that's just, like, Plato's opinion, man. (Or maybe Socrates's.) Plato's opinion, that we accurately know what it was 2300 years later, because he wrote it down for us.