Advice from Ursula LeGuin on how cli-fi novels might impact readers

In 1969, with The Left Hand of Darkness, Ursula Le Guin wrote an introduction to the book to explain what she was trying to do.  In the introduction, she also wrote:

“In reading a novel, any novel, we have to know perfectly well that the whole thing is nonsense, and then, while reading, believe every word of it. Finally, when we're done with it, we may find – if it's a good novel – that we're a bit different from what we were before we read it, that we have been changed a little, as if by having met a new face, crossed a street we never crossed before. But it's very hard to say just what we learned, how we were changed.”