by Mark Miodownik, the history of metals is discussed and how their discovery helped shape mankind and how he used tools. Professor Richmond discovered a pit dug by the Romans in AD 89 which contained buried nails meant to be kept out of reach of from the Celts.
Based on the excerpt, the reader can infer that Professor Richmond viewed the discovery of the Roman pit as fascinating because he thought it interesting that they valued the nails so much to keep them out of the reach of their enemies.
Banquo's ghost appears in act 3, scene 4, and sits down in Macbeth's place. The fact that Banquo's ghost chooses to sit in the king's seat is significant because it foreshadows how Banquo's descendants will inherit the throne, as the witches predicted.
