That said, the image could help explain why others might have had difficulty identifying the existence and motives of this terrorist cell.

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This leads others to decry the existence of such polarized debates.

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With regard to minimizing the impact of groundings caused by engine problems, the existence of two competing engines could help in some situations and hurt in others.

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Our Droids, iPhones, and Kindles depend on spectrum to talk to the world, and the existence of robust competition among wireless network operators give Apple, Google, Amazon, and others leverage to build the kinds of devices they want and to get them into the hands of consumers.

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According to Greek philosophy, one of the defining characteristics of humanity that distinguishes it from other forms of existence is a deeply engrained social instinct, the need for association and affiliation with others, a need for friendship.

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