No, you ask them if they’re familiar with the concept. You don’t give them a intro course to it. One treats them as a peer. The other treats them as unknowledgeable. It’s disrespectful to assume someone has no knowledge in the topic they admit to be interested in. Going on a long spiel isn’t a passionate dialogue. It’s a long monologue trying to teach someone something because you assume you’re the teacher and they’re the student in the situation.