for the avoidance of doubt, the Guardian is interviewing Le Guin; Rowling is not involved in any way except as the subject of one of the questions

I have no great opinion of it. When so many adult critics were carrying on about the "incredible originality" of the first Harry Potter book, I read it to find out what the fuss was about, and remained somewhat puzzled; it seemed a lively kid's fantasy crossed with a "school novel", good fare for its age group, but stylistically ordinary, imaginatively derivative, and ethically rather mean-spirited.