But these seem like temporary expedients: lending the countries money for extended periods at rates neither can afford.

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Supply-side measures have worked so far, but it will be an irony if people learn more dangerous expedients as a result.

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Yet shorter-term and prudent expedients are still possible, which might bring greater reason and order to public financial affairs, and might buy some time until longer-term, more-libertarian solutions are possible.

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Various other designs have been tried since, but all were seen as temporary expedients intended to tide a patient over until the real thing became available from a human donor.

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