It's as a philosopher once imagined: a circle of which the center is everywhere and the circumference is nowhere.

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If several are clobbered at once, and all start to reduce their risks simultaneously, it might trigger a vicious liquidity-draining circle.

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The daily chart shows that by the end of July 2006, a double bottom (see circle) had been completed and the number of new highs began to expand once more.

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