I had said that Le Guin's worlds were real because her people were so real, and he said yes, but the people were so real because they were the people the worlds would have produced. If you put Ged to grow up on Anarres or Shevek in Earthsea, they would be the same people, the backgrounds made the people, which of course you see all the time in mainstream fiction, but it's rare in SF.
Jo WaltonClass is entirely intangible, and the way it affects things isn't subject to scientific analysis, and it's not supposed to be real but it's pervasive and powerful. See; just like magic.
Jo WaltonThere may be stranger reasons for being alive. There are books Thereโs interlibrary loan. There are books you can fall into and pull up over your head.
Jo Walton