Harry, who is three, will be joining our days soon. Today he accompanied us to the park as a taster of things to come. During snack, being the good role model I am, I offered Harry some apple slices. "No, thank you..." he says. Cheerfully calm tones, small smile, steady eye contact. All this is highly impressive for a three year old. I am delighted by his demeanour, and hasten to tell him so. "Well, that was very polite, Harry" I respond - oh, but I'm interrupting him - "...but thank you for offering!" he finishes. Not mere manners: this boy is positively courtly. Should I curtsey?