Welcome to European Tribune. It's gone a bit quiet around here these days, but it's still going.
... why would the differentials spiral? I don't see the cause and effect positive feedback where a larger size of differential causes an increase in the differential.

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.
by BruceMcF (agila61 at netscape dot net) on Fri Nov 19th, 2010 at 05:45:39 PM EST
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