“I know it can’t fly,” Sarah said. “But think of how much of the world we could see from up there! We can climb to the top of this bookshelf, then jump over to the plane. It’ll be easy!”“But—”Sarah wouldn’t take no for an answer. “Sam,” she said, “tonight we’re going to get into that airplane, and we’re going to see the world!”Throughout the day, Sam was so nervous he could hardly sleep or read. He didn’t want to let Sarah—or himself—down, but he didn’t want to get into that airplane, either.