Every evening, a traveler walked the same mountain path. The road twisted through thick trees, crossed narrow bridges, and disappeared into the darkness beyond the hills. Before each journey, he spread maps across his table. He studied every turn. He tried to imagine where rocks might fall, where rain might flood the trail, and where strangers might appear. "If I can predict everything," he thought, "I'll never make a mistake." Night after night, he delayed his journey. There was always another possibility. Another danger. Another outcome to consider. One evening an old shepherd passed by his house carrying a small lantern. The traveler laughed. "You're going into the mountains with only that little light?" The shepherd smiled. "It's enough." The traveler shook his head. "I need to know what the road looks like five miles ahead." The shepherd lifted the lantern. "It doesn't show me five miles." "It shows m...