We also met up with Johannes, who worked in the tourist shop in Die Grüne Zitadelle. He had told me that he had to deal with stupid people all day. Since I bought a postcard from him, I figured I was one of those stupid people. Luckily, he said that if I am stupid, I was the best stupid person he had to deal with. I would later sign the book in his shop with those words, which has since garnered some attention from other tourists according to Maria and Johannes.