According to Aristotle, in order to experience compassion and fear, the protagonist must be someone who, no matter how distinguished by virtue and justice, does not fall prey to misfortune due to vice and bad, which occurs to him due to some error. The transmutation of good luck into misfortune must be caused not by the badness of the character, but by a great mistake.
This argument was made by Aristotle. The common type of tragedies written in the story was happened to a heroic character. But according to him, a proper tragedies may happen for someone ordinary from everyday life
