It isn't a test. If you're not interested in the business world, why would I want to involve you in a conversation about it? I don't happen to expect others to hold intelligent conversations about topics they aren't knowledgeable in, and find it a little tedious when they try. As I'm sure you would feel if I attempted to feign knowledge of photography.

[Actually, he is pretty knowledgeable but he doesn't mention that.]

No, I really don't mind if you aren't interested. There's plenty else to discuss.