Currencies need to have systems in place that work to make them stable and preserve value, otherwise they're just tools for transactions. This might be a bette

Currencies need to have systems in place that work to make them stable and preserve value, otherwise they're just tools for transactions. This might be a better state of affairs if currencies are backed by something exchangeable (e.g., joules of carbon neutral energy, etc...). We don't have many currencies like that in the world, as I understand it. Most are essentially contracts between governments that may or may not end in violence.