Today, for the first time, we had a guest for lunch. Han is Remo's student. Remo is in charge of helping him with his research so he can graduate next year. But Han is much more than 'Remo's student'. He has helped us on numerous occasions with things that have nothing to do with physics. If it wasn't for him, we would not have mobile phones, we wouldn't know where the university cafetaria is and we wouldn't know how to get downtown. If it wasn't for Han, I don't know where we would be!