I am reading Emma Donoghue’s Room at the moment. It is one of those novels that everyone is suddenly talking about. Narrated by a five year old, it is about he and his mother’s very isolated life. The book has an extraordinary premise, which I won’t give away here, but there is another element to the story that everyone can’t help but seem to notice and unpick and that is that the five-year old is still being breastfed.