cropped-bob-shapiro.jpg   By Bob Shapiro

If the only tool in your kit is a hammer, pretty soon every problem starts to look like a nail. I’m not sure where I hear that, but I’ve seen that phenomenon in action.

I read an otherwise excellent recounting of the travails of Russia and its Ruble during the last few months, as their major exports, oil and gas, have plunged on world markets. As oil and gas prices have gone down, so has the foreign exchange value of the Ruble, by a comparable

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