"The Olympic flag [] has a white background, with five interlaced rings in the centre: blue, yellow, black, green and red []. This design is symbolic; it represents the five continents of the world, united by Olympism, while the six colours are those that appear on all the national flags of the world at the present time."

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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 Walton