Europe is as full of bad ideas as it is of bad debts.
Conventional wisdom says that sovereign defaults mean the end of the euro: If Greece defaults it has to leave the single currency; German taxpayers have to bail out southern governments to save the union.
This is nonsense. U.S. states and local governments have defaulted on dollar debts, just as companies default. A currency is simply a unit of value, as meters are units of length. If the Greeks had skimped on the olive oil in a liter bottle, that wouldn’t threaten the metric system.
