Is a Latin expression meaning "god emerged from the machine", the Greek translation of "απò μηχανῆς θεóς" (APO mechanés theos). It originates from the Greek and Roman theater, when a crane (machina) introduces a deity (deus) from offstage to resolve a situation. Currently used to refer to an external element that solves a story without following its internal logic. From the point of view of the structure of a script, "Deus ex Machina" means any event whose cause is dictated by needs of the script, to keep what is expected of him from a standpoint of interest , of merchantability, ae