Many cultures believe it's good luck if a bird poos on your head, like what happened to Carl (eww!). Others say it's bad luck if you break a mirror. For centuries, humans have tried to understand things like right and wrong, fair and unfair. So, how much does luck play in your life, in good or bad ways? And how might understanding luck make us think differently about the world?

Producer: Kyla Slaven

Executive Producer: Ian Walker