Sophocles’s
Oedipus Rex is an example of reversal in plot because it is expected that Oedipus’s fears will be calmed, not confirmed. This unexpected twist increases an audience’s feelings of fear and pity and makes catharsis stronger and more effective. Again, it is important to note that Aristotle’s definition is according to “necessity”
or “probability.” Thus, what is necessary may not always be the most probable.