The Role of a Teacher in Learning a Language

Do we need a teacher to learn a language? That's what I want to talk about today. Most people who think of learning a language think of finding a teacher. But there are polyglots like the famous Hungarian polyglot, Longcato, who essentially learned on her own. There are two sort of situations: One is the motivated learner and the other is the unmotivated learner. A teacher can trigger an interest, a teacher you want to then learn the language to show the teacher. So, in that situation, if you're not motivated, you need a teacher. However, the role of the teacher is not to explain the language.