In most Asian cultures, it is actually bad luck to wear black to a wedding because it is considered as some sort of sartorial disguise for misfortune and even even death.

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Lord Black's greatest stroke of luck, however, was his purchase in 1986 of the ailing Daily Telegraph, Britain's biggest-selling quality newspaper, thanks to the help of a former editor of The Economist, Andrew Knight.

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It's impossible for the editors of Forbes.com to predict who will change the world, because major changes are Black Swans, the result of accidents and luck.

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