TODAY is a very special day for Gulliver, for it is ten years to the very day since his column at The Economist opened for business. Since then, much has changed in the world of travel. A barrel of oil is now worth a tad over $ 60, instead of around the $ 100 mark as in April 2008. Old friends such as Monarch Airlines of Britain, Continental, NorthWest and US Airways of America and Air Berlin of Germany have long been consigned to the dustbin of history due to bankruptcies and mergers. Airbus’s A380 superjumbo, the largest passenger airliner ever built, somehow managed to go from the future of aviation to its past in less than a decade.