A father asked his son to carry a letter from their camp to the village. He pointed out a trail over which the lad had never gone before. “All right Dad, but I don’t see how that path will ever reach the town,” said the boy. “Well son, I'll tell you how. Do you see that big tree down the path?” asked the father. “Oh, yes, I see that far.” “Well, when you get there by the tree, you’ll see the trail a little farther ahead -- and farther down you'll see another big tree -- and when you reach that one you'll be closer and so on until you get within sight of the houses of the village.”