This is an interesting and useful article. The topic is timely and important. The approach and methodology are interesting. And in it you will find a certain number of points which I regard as timely, important and very much worth saying again and again. In a couple of instances I find their conclusions and interpretations a bit puzzling, but let me keep them to myself for now and avoid getting between you and the authors. It’s time to step aside and let them speak for themselves.