> What are the current limitations if not gold any more?
Inflation on one side, employment rates on the other. It's literally in most central banks' headline policy goals.
> How has that "unlimited" money supply worked out ever since?
Pretty well, seeing how it's largely coincided with unprecedented growth in living standards and helped us avoid what could have been a repeat of the 1930s due to Covid's impact on economies, among other things.
Inflation on one side, employment rates on the other. It's literally in most central banks' headline policy goals.
> How has that "unlimited" money supply worked out ever since?
Pretty well, seeing how it's largely coincided with unprecedented growth in living standards and helped us avoid what could have been a repeat of the 1930s due to Covid's impact on economies, among other things.