All the conjectures here are just conjectures given there is nothing to verify them. It's just to express the discussion for the story. What's the property like? What is the value of money? All of them, with the effort of the future, can prove them. In fact, it is still necessary to use gold as a decorative item, while currency (usd) for economic circulation, and electronic money for the technological age. Each asset has its own features and needs more time to make decisions for them. I think so.