> If savings incerease when the deficit increases, why don't we crank defecit so high that everyone can be billionaires?
Nominal wealth is relative. If everyone is a billionaire it doesn’t change the relative claims we all have on real resources.
What we can do however, and what MMT economists recommend, is using the power of the federal government as the issuer of the currency to ensure spending is maintained at full employment levels (meaning 0% involuntary unemployment). The best mechanism to achieve that is a federal job guarantee.
> And if the savings decreases when the deficit decreases the entire country must have been broke when we paid off our debt in 1835. Right?
Well sort of. Every budget surplus leads to a recession or depression[0]. However the US could retire all its “debt” overnight and stop issuing bonds and paying interest if it wanted to, without any surplus. The fancy terms for this are quantitative easing and overt monetary financing but fundamentally there is no difference between treasury issuing bonds “out of thin air” and issuing reserves “out of thin air”. Both reserves and government securities are high grade financial assets held by private banks, the nature of the liability held makes virtually no difference to the operation of the money system.
Bonds are simply used to set and defend the target cash rate which is also a pointless vestige, we should just have ZIRP forever[1].
[0] https://www.levyinstitute.org/pubs/pn99_3.pdf
[1] https://neweconomicperspectives.org/2014/07/debt-free-money-...