Conflating two issues. If the economy is a fixed pot, then deficit spending, or taxes, or issuing new dollars, simply reallocates wealth between the government, industry and citizens. Yes, everyone can have a job, but not necessarily one that pays a living wage if the pot is too small. The tenor of the economy will change, as will the winners and losers, but its capability is fixed.
The more important questions is Productivity. Productivity improvements GROW the pot. So there is enough money to retire on. Or pay for healthcare. We must spend more time creating laws and institutions that reduce waste, have as their goal a few percent improvement in every process every year, training and so on. Otherwise, no matter what trickles down to whom, it will be insufficient to feed us all. MMT or no MMT.
