I see your quote at the bottom. I agree with the discussing ideas stuff. You can go on for hours doing this around a campfire with no one getting upset.
A student in my class had a dad who was a professor of philosophy at a university. He came in to talk with the class. He involved every student by asking them simple logic questions about his daughter who sat right in front of him. The questions revolved around whether she existed or not.
By the end of his talk, the class was thoroughly convinced through logic that Addie did NOT exist ! (even though she was sitting right there...) Best presentation ever !