Greece would need to keep its decision to exit a secret as long as possible to avoid even more money fleeing the country.

WSJ: Experts Try Charting the Path for a Euro Exit

The result is important because governments were encouraged by the original paper to take drastic steps, such as severe austerity measures, to avoid borrowing any more money once their borrowing reached 90% of annual output.

BBC: Doubt cast on research supporting austerity

But for others, it comes down to having enough money to avoid more expensive products and services .

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