In "Mending Wall," what is the figurative meaning of the speaker saying of his neighbor, "He will not go behind his father's saying? The neighbor's father was not as close-minded or set in his ways as the neighbor clearly is.

The neighbor must do as his father has ordered him to do and rebuild the wall.

The neighbor is a fool who is putting himself and the speaker in danger with his outdated ideas.

The neighbor will not break from tradition and the conventional wisdom that has been passed down to him.