Now this one is actually very clever. When you have a crowd of people or a family to cook for, why would you wait around as you cook individual hot dogs one by one? It takes up so much time and you'll get too hot sitting by the fire. Instead, grab a rake, attach one hot dog to each of the prongs, stick it into the fire, and voila!
All the people sitting around and waiting for food were probably pretty happy to see this smart person come up with this hack. There was no need to wait around endlessly anymore!