Without it, the island's evil influence would never have had a mouth to speak through. Jack and his tribe set up the pig's head on a stick as a sacrifice to the beast, the one thing they fear most. When the set it up, it becomes a representation of the beast, then it becomes the beast itself. Simon, in a sort of daze, recognizes the pig's head as the consequence for the boys' fear. Their fear is the real beast, and Simon talks to the fear by talking to the pig's head. During this conversation, Simon realizes that fear is the ultimate enemy of their small society, and that he must fight it. Simon feels threatened when the pig/beast tells him, "If you try to stop us, we'll do you too"
Without it, the island's evil influence would never have had a mouth to speak through. Jack and his tribe set up the pig's head on a stick as a sacrifice to the beast, the one thing they fear most. When the set it up, it becomes a representation of the beast, then it becomes the beast itself. Simon, in a sort of daze, recognizes the pig's head as the consequence for the boys' fear. Their fear is the real beast, and Simon talks to the fear by talking to the pig's head. During this conversation, Simon realizes that fear is the ultimate enemy of their small society, and that he must fight it. Simon feels threatened when the pig/beast tells him, "If you try to stop us, we'll do you too"