> since private property is also only legally a thing

This is a particularly interesting thing to point out in this context - property ownership is a meme itself.

> Things have value because we need them (inelastic part of the supply-demand curve), things have a price because we want them (elastic part of the supply-demand curve).

Incidentally while it's an interesting distinction, I don't agree with your comment on need/value want/price. I value lots of things I don't need. Humans are creatures that value things, things that are valued are valuable.

> Only if you don't understand probabilities and risk management.

Yeah, you're probably right on that. I could maybe try to claim that probabilities and risk management are memes themselves...