It is being trailed across the media that the Cabinet, meeting as I write this, will endorse the notion of a third runway at Heathrow. If it does, the idea has to get through parliament, by no means certain, before it will face challenges in the courts.
All this means that even if the government says yes, it will not happen. Because some things may be good or not. Governments may want them or not. But overall the public opposition and legal complications are such that it is politically impossible to deliver them. The third runway at Heathrow is one of those ideas. In the end it will not happen. Whatever is said today.