Um. Oliver heard all of the words, but some of them didn't make sense together. He paused for a moment after they were left to their own devices, still trying to comprehend was it was exactly that he was supposed to do. He glanced at his grid and at the book, trying to make sense of what it meant. He had an arrow, at 1, 4, and 7. So, um...

"Arrow of practicality," he mumbled out loud. Okay, if that's what the book said. He nudged his sister. "I'm glad we have an arrow." What would it mean if they didn't? That they were dull, boring people with no personality?