The most productive period per annum in the history of mankind was 1871-1913, the time of the gold standard. (Disagree?)

- Money supply was not only bullion, it was augmented with real bills. (Real bills can be implemented with bitcoin, if bitcoin is the quote currency.)
- Debt was kept in check by the natural mechanism as debt was not money, only bullion was (and real bills acted as money without strictly being that).