Realized eschatology is a way of talking about the end of the world. It's an idea that says the world has already ended or is in the process of ending, and what comes after that is something new and different. It's not about the future, but about how the future could be different from what we expect. To understand it better, let's think about a movie. Think about a movie that is about the end of the world, like the movie The Day After Tomorrow. In that movie, the world ends and something new is created. That's an example of realized eschatology. It's not predicting what will happen at the end of the world. It's talking about how the world could be different when it ends.