Oedipus rex is a play meant to be watched and experienced. Ancient Greek audiences would already know the background, and in fact the entirety, of the Oedipus story. Therefore what makes this particular play so great is its ability to present this material in an evocative and powerful manner, in order to nullify the reality that most of the audience already knew its contents.The conflicts come to life within the characters and the major conflicts they face. We can see these conflicts represented in the theme of darkness and light. Darkness and light are tightly wound up with the theme of sight and blindness in Sophocles' play. Oedipus - and all the other characters, save for Teiresias - is 'in the dark' about his own origins and the murder of Laius. Teiresias, of course, is literally 'in the dark' with his own blindness - and yet manages to have sight over everything that is to follow. After Oedipus finds out what has happened, he bemoans the way everything has indeed "come to light".