There is a long history of non-fiat currencies before the current system. Would you mind quantifying some of the measures that you think make fiat a fiasco comp

There is a long history of non-fiat currencies before the current system. Would you mind quantifying some of the measures that you think make fiat a fiasco compared to e.g. gold standard? Here is some background data: https://www.moneyandbanking.com/commentary/2016/12/14/why-a-gold-standard-is-a-very-bad-idea https://www.moneyandbanking.com/commentary/2016/12/14/why-a-...