How accurate are the witches' words, "fair is foul, and foul is fair"?

Question

If you guys can please elaborate using examples from the book.

Answer 1

When King Duncan approaches Macbeth's castle I think he says "this castle hath a pleasant seat" or similar. His perception of the castle is pleasant. In fact, his death is being plotted within its walls.
Looks can be deceiving. So can first impressions.

Answer 2

Think about it. First of all, Macbeth uses the same phrase just a couple of pages later. And don't you think those words have a lot of meaning? They foreshadow the ambiguity that's found throughout the book and also tell you something about Macbeth's doom in the future.

Answer 3

well.
if someone is fair then the consequences will be bad, but it goes both ways.....