Yes, the boys are fearing the unknown rather then the beast.
Also No, because they are not sure if the beast exists. The beast is depicted differently to everyone.
Answer:
Macbeth's belief in the witch's prophecy makes him to act to fulfil his desire and the prophecy. ... Macbeth's evil ambition brings chaos to Scotland and also to Banquo's friendship. In Macbeth's selfishness, he also murders Banquo so that Banquo's prophecy of his decedents sitting on the throne should not come to pass.
The most logical answer would be “why did the author write this text?”
Nenny wants to buy the music box