Black Swan （B）

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Before the discovery of Australia, people in the old world were convinced that /&nbsp;all swans were white, an unassailable belief /&nbsp;as_it seemed completely confirmed by empirical evidence. The sighting of the first black swan /&nbsp;might_have been an interesting surprise for a few scientists, but that_is not where the significance_of the story lies.</div>

Shadowing: Black Swan （B）