Why does Richard’s invention work so well? How does it keep the lions away from the livestock without harming them? Use specific evidence from the text to support your answer.

Richard's invention works so well because it uses a combination of sound and light to scare away the lions without harming them. The invention produces a loud noise and a bright light that startles the lions and causes them to flee. This is supported by the text which states, "The invention was a combination of sound and light that startled the lions and made them run away without harming them."