In this world, in every space, there are countless parallel spaces, and in these parallel spaces, there are the same human beings as themselves, the same living planets, the same solar system, and the same galaxy. The same universe, so there is the concept of parallel universes! In each parallel universe, the initial development is exactly the same, but due to a slight deviation in history, the final development direction is completely different! Maybe there's an identical you somewhere in the universe reading an article that is exactly the same as this one? That guy isn't you, but lives on a planet called "Earth" with mist-shrouded mountains, endless fields, noisy cities, and nine other planets revolving around a star? His life has been the same every second as yours. However, maybe he's about to put down the article at the moment, and you're going to read it.