“In Vonnegut’s novel “Breakfast of Champions,” we learn about another Kilgore Trout story, “Now It Can Be Told,” written in the form of a letter from the Creator of the Universe addressed to the reader of the story. The Creator explains that the whole of life itself has been a long experiment. The nature of the experiment was this: to introduce into an otherwise wholly deterministic universe one single person who is granted free will, to see what use he makes of it, in a reality in which every other living thing was, is, and always will be a programmed machine. Everyone in the whole of history has been a robot, and the single individual with free will’s mother and father and everyone he knows are also robots, and so, by the way, is Sammy Davis, Jr. The individual with free will, God explains, is you, the reader of the story, and so God would like to offer you an apology for any discomfort you have endured. The end.”

Take a look at this wonderful piece by Salman Rushdie from The New Yorker.
https://www.newyorker.com/books/page-turner/what-kurt-vonneguts-slaughterhouse-five-tells-us-now?utm_social-type=owned&utm_medium=social&utm_source=facebook&utm_brand=tny&mbid=social_facebook&fbclid=IwAR3hJG7DcVwWrTN40SbdIUwKduRos17g4LsdJLnnPAkb3hNNV0PTH-J8Hyo