If you ask me, I think Elvis said it best about such messages: Return to sender, address unknown, no such number, no such zone.

FORBES: Elvis Presley Had It Right When It Came To Insider Trading

The Greek crisis only confirms the folly of binding a group of disparate countries together in a currency zone with no mechanism, such as a central fiscal authority, to address its internal imbalances.

ECONOMIST: Greece's sovereign-debt crunch

But if no agreement can be reached on how to enact such plans, the euro zone will face a "severe and fundamental challenge, " he added.

WSJ: Tony Blair: Euro is at a 'Final Decision Point'