[david927]

I think it's the same distinction as telling someone something (as in notes) and showing someone something (as in art). When you show someone something, making them experience it empathetically, it can change who they are. They can accept the information viscerally. Sometimes, strangely, just knowing new information isn't enough -- we have to feel it.

A good talk can make someone feel emotional, as if they arrived at the information on their own, and that they "owned" the new knowledge. And that's a very powerful thing.