Saved by Tara McMullin and
Prediction is the business of prophets, clairvoyants and futurologists. It is not the business of novelists. A novelist’s business is lying.
Ursula K. Le Guin • Dreams Must Explain Themselves: The Selected Non-Fiction of Ursula K. Le Guin
All fiction that does not violate the laws of physics is fact.
David Deutsch • The Beginning of Infinity: Explanations That Transform the World
I think Borges is quite correct, all prose is fiction.