Can You Charge for That Information?

Every piece of knowledge is learnt from some one, and then you interpret it. But i think there should still be a source in there. Soones put the question of shawing that information on. Can you charge for that information? I don't think so, because you have your own interpretation as well. Just by saying, this person, ye, it's ye. Most people don't care about the saurces, but if you say the source it, it makes it sound like you know what you're talking about. And most do.