Not only instructive and interesting but fun and quite wickedly hilarious in places. It's all obvious really but that doesn't take away from its importance. Weldon also discusses why people write, why people read, and what both are looking for.
p.133. "Readers interpret novels as confession and absolution rolled into one. Why else do any of us go round with this rectangle of printed paper, this potted alternative universe... 'I'm reading such a good book!' Can it be because increasingly, in a world without religion, when virtue must be its own reward, and we must live without a sense of divine retribution or heavenly compensation, when all experience is happenchance, and chaos and entropy rule, we look for certainties, for shape, for structure, for beginning, middle and some conclusion, however small, however brief - and this is the satisfaction the good novel brings us." Indeed.
A personal revelation, I will keep writing my novels, like the Soviet writers, for the 'bottom drawer'. Getting published is not relevant for me but I really enjoy the process of writing.