Once I was baffled by this duality: diamonds for my parents, crumbs for my wife and me.

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Despite the potential confusion that this duality creates, matrix management was enormously popular in the 1970s and 1980s.

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On a social level, too, we have to get over this duality between liberal arts and the sciences.

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It is the way they embrace this duality of outlook and perspective that defines this new breed of African women.

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As I talk to tech entrepreneurs and policymakers in the coming weeks, we will see this duality in daily practice.

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Nowhere is this duality more apparent than in relation to alcohol.

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Games are this interesting duality.

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This belief gives rise to a duality, where practical and creative endeavors lead largely separate existences -- one slogged at during the workweek and the other indulged on nights and weekends, or dismissed as a luxury.

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