When we were faced with this task, we did not take it easy and considered many designs. After all, since we come from the natural sciences, we also looked around in flora and fauna and thus came across the flight image of the raven. Ravens are widespread, from Ireland to India, from Greenland to Nicaragua, very adaptable, like to communicate in many different ways, are smart – and they cooperate. That this is so has only been scientifically confirmed in recent years. These characteristics have led us to choose the raven as our personal lucky charm; it was a good choice, as it has been accompanying us for more than two decades now.