I know Mr Jung and Mr Freud tell us that we can learn things from our dreams. Well, last night I learned that zeppelin crews on the Rio to Lisbon route steal shoes from the passengers’ staterooms when they get bored. (Brawls have broken out over a pair of Spongebob flip-flops.)

I learned further that if you lose your wallet during the trip you are handed over to my friend Judith Levine for safe keeping — although her response is usually just to throw up her hands, cry “Whatever!”, and sail out in a flurry of crêpe de Chine. The trip takes three days.