I remember hearing about Stephen Zarlenga and his book 'The Lost Science of Money' on a Gnostic Media podcast many years ago. His concept behind debt-free fiat currency is appealing, however I am more enthusiastic about non-state solutions with cryptocurrencies.
But a debt-free dollar would be a great start for the state, regardless.
It's funny, my dad sent me an article about how Bitcoin was a massive bubble, and it reminded me that the most massive bubble in the world is the dollar itself.
Interesting times.