Some mega projects are wasteful, others are no-brainers. I believe the third run-way is a no-brainer, especially if HKIA wants to be relevant and a top airport in the future to come. Two runways for a mega-city like Hong Kong? Unbelievable. Especially as Hong Kong has successfully re-imaged itself as a major transportation hub, cargo hub, and a tourism city. It would be ashamed if progress is hampered because HKIA runs out of take-off/landing capacity.