I have been looking into underemployment data for Europe today as part of a larger project which I will report on in due course. But whenever I am studying European data I think how stupid the European Monetary Union (EMU) is from a modern monetary theory (MMT) perspective. Then I read the Financial Times this afternoon and saw that Diverging deficits could fracture the eurozone and I thought there is some hope after all although that is not what the journalist was trying to convey. This is an opportune time to answer a lot of questions I get asked about the EMU. Does MMT principles apply there? Why not? Is this a better way of organising a monetary system? So if you are interested in those issues, please read on.