Me: All governments enforce some system of property rules. Treating some good and services as being in the commons is just as valid as treating them as private property.
JD: No, property rights are a natural right, and using force to confiscate them is a basic violation.
Me: Well, that's how you want society to act, but right now you're in the minority. Rights shared fictions which are determined and enforced through social processes.
JD: No they aren't. They exist independently of what people think.
Me: Well, you and I have different ideas of what would constitute basic rights.
JD: But mine are objectively true.
Me: Can you prove that?
JD: It's self-evident.
Me: It's evident to your self, but not to mine. If they are true and not a human fabrication, surely you can prove their existence in some way?
JD: I already explained in our previous discussions that they are intangible, and by asking for evidence you are not taking this seriously! [swearing possibly ensues]