Welcome to Earth Prime. Before there was thought, there was this place. One Earth, with a single history. But with the coming of man came the illusion of free will and with that illusion came chaos. With every choice we make, we literally create a world. History branches in two, creating one Earth where we made the choice and second where we didn’t. That’s the secret of the universe, you know. Billions of people making billions of choices, creating infinite earths.