void Start() { HumanoidClass human = new HumanoidClass(); HumanoidClass enemy = new EnemyClass(); HumanoidClass orc = new OrcClass(); //Notice how each Humanoid variable contains //a reference to a different class in the //inheritance hierarchy, yet each of them //calls the Humanoid Yell() method. human.Yell(); enemy.Yell(); orc.Yell(); }