I'm not sure what we are really arguing about at this point. I'm claiming that the government would increase deficit spending to pay for Medicare For All. If

I'm not sure what we are really arguing about at this point. I'm claiming that the government would increase deficit spending to pay for Medicare For All. If you want to discuss the impact of having a larger government deficit, I would agree with you that inflation is the potential risk. We can have that discussion. I'm probably more optimistic about the risk of inflation and the effectiveness of mechanisms for controlling inflation. If you want to discuss government debt default risk for a country that prints its own currency, MMT and many mainstream economists says it is zero. If you want to discuss technical constraints on the size of the deficit for a country that prints its own currency (through mechanisms like bond vigilantes, etc) MMT would say there is no constraint. There is plenty of evidence to support this. Just look at what's happening with the US federal government deficit right now. If you want to discuss what fraction of GDP is appropriate for government spending, that's an interesting conversation and would be curious to hear your thoughts. Central banks are a necessary mechanism, as you point out, and need to do their job well. But the main questions in this debate are around fiscal policy, not monetary policy.