MMT(Modern Monetary Theory) -why it’s important in post covid-19 era-

This time, we will talk about MMT which is Modern Monetary Theory.
MMT is called geodynamic theory in enonomics.

After Covid-19,, most of government supplied more money into the financial market via central bank.

That means this action may cause inflation in old economic theory,, but in MMT,, this is right thing to do, we need to know why and how this MMT works and what’s the purpose of MMT, and downside of MMT.