Argentina did not choose a pure currency-board model: the government has a thin margin of discretion (working mainly through changes in bank reserve requirements) which it has used, especially to ease strains in the financial sector.

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Moreover, Amazon may be cautious about across-the-board discounts because its profit margins are already thin.

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Board members also need to stop spreading themselves thin on five or 10 boards at a time.

CNN: More reform and less hot air

Solar stocks are heading lower across the board this morning following an alarming earnings warning after the close yesterday by thin-film solar provider Energy Conversion Devices (ENER).

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