Scientists have discovered time travel. John goes back in time and meets his great-grandfather as a young child. John invites the boy to see the circus. Unfortunately, there’s a fire at the circus which kills the boy. What is the paradox?

Which detail from chancer's "the monk's tale" best demonstrates that fortune is a "blind property" that no one should trust? a.julius ceaser rose up because of wisdom, bravery, and intelligence b. king belshazzar became the ruler after his powerful father became king c.samsons enemies blinded him but he was able to destroy them before he died d.queen zenobia enjoyed vast power but her enemies conquered her in the end