How hard can it be?
ExXB - I have read you posts and I wish we had (more) people like you to explain the realities of air travel to those affected when it goes 'wrong'. But I think you may have been a little to kind to LHR. That airport runs day in, day out well above what might be described as its 'rated capacity' which means as soon as the slightest hiccup occurs, airline operations grind to a halt. The fault certainly doesn't lie with ATC nor the airside operations people. Without their constant intervention the airport wouldn't get a fraction of the movements it does. No, the fault lies with senior management of the airport and to a degree the government. Unless they get their act together, LHR will become a regional airport feeding the likes of FRA/CDG/AMS. But there again, maybe that's not such a silly idea...