What is it like to live in a place where you have to speak several languages to get by? Simon Calder travels to India, where a top university only teaches in English, the one language that the students from all over the country have in common. And he meets people who use four different languages with their friends and family, depending on whom they are talking to. In Luxembourg, it is not so much family, but other situations that require four languages, such as going shopping, watching TV, or school lessons.