He points out that the Fukushima disaster resulted from a particularly unlucky concatenation of circumstances.

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The strings are frayed, then cut, by a concatenation of random events that amount to a siege, compounded by a flood of biblical proportions.

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That edge has been sharpened by a concatenation of frustarations.

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That said, Airbus has been luckier than Boeing in that it has experienced nothing like the sudden concatenation of events that have dogged the 787 in the last month.

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Onstage, each horse is a large puppet, a concatenation of cane, silk, cables, and gears, worked by two men beneath the frame and one at the side, operating the head and the neck.

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But even as people dig out their old books about that concatenation of accident, stupidity and miscommunication that caused the Great Depression, I want to throw in another thought: it could be worse than the 1930s if we let it happen.

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