Per Unckel: This is the first time I've attended a Royal Colloquium. It's a very good format. We have the same discussion for three days, but we look at it from new angles, so that the discussion goes deeper each time. I found Chris Barnett's thoughts very inspiring; how can we plan ahead so that we don't tie ourselves to old techniques? There are a lot of inspiring people here. Thanks to The King, all these scientists gather here from all over the world.