As mentioned above, it is always the people that make any experience special. And there are many friendships that were born during my stay in St. Gallen and that will hopefully last for ever. To start with my research fellow and all time wingman Sebastian Knoll who walked on my side during my first steps as a researcher, who provided me with a corner to sleep in his one-room apartment, and who shared his thoughts on anything at anytime. Thanks Sebastian! Also, I would like to thank Manuel Seyferth for his great friendship, his skill to organize all kind of.