A third runway for Heathrow?

I was invited to blog a piece by this title to accompany tomorrow's BBC Money Programme about the proposed third runway at Heathrow, much in the News this week because of 'Plane Stupid's' protest at the House of Commons and the Greenpeace protest at the airport itself . I'd question some of the assumptions behind this proposed decision. The decision-making approach adopted doesn't, to me, look systemic. It also highlights some very different meanings behind the term 'sustainable development'. I think systems approaches to decision making have something to offer in this kind of context.