Dirac Sea Prequel

The novel adopts a two-male main line and uses multiple perspective switches to advance the plot. Starting from the third chapter, we will enter a real brain-burning science fiction, are you ready? When the end of civilization is about to crush everything, where does the last hope come from? Please tell me, great Socrates, when at the end, entropy decreases and returns to the past, will it still be the same as before? Will the world remember me...