Thanks for this. I have written on intrinsic value and currencies in the Anthropocene- basically proposing to back currencies with the ultimate, slightly abstract, asset class: the sustainability of our future. Maybe you find my time-based approach to money interesting- would welcome your thoughts…https://medium.com/@philipreuchlin/a-currency-for-the-anthropocene-de-ponzi-fying-the-future-4993a35689e6