Answer:
The significance of the Porter within Macbeth is twofold. Primarily, the Porter functions as comic relief, lessening the tension in the audience after the murder of King Duncan. The Porter also serves a thematic function, indicating that the gates to Macbeth's home are synonymous with the gates of hell.
People may have interpreted what happened or was said differently therefore altering the story
Answer:
The last answer would most likely be it.