"Well," continued Molly, oblivious to the Edric's internal thoughts. "It's really important for ships that sail out of sight from land. With all that water, everything starts to look the same. There are different tools to use to determine directions, but they can fail. That star never does."
"It's the only fixed point in the night sky. It's always to the north. If you can find it, you can find your way home." She smiled a little sadly at the notion.