Seonglae ChoA technique that uses supernatural power to resolve a tense situation in a story and bring it to a conclusion. In Latin, it means 'god from the machine' or 'deity of the mechanical device'.
A convenient plot device or shortcut
What we want to see in a story is the struggle to achieve the goal
Aristotle said about 'Deus ex machina': 'Problems in a story should be resolved only within the story itself.' He was criticizing situations where an absolute being that had not been involved in the story suddenly intervenes and solves the protagonist's problems.