Still, our gravest threat stems from the state replacing the family as the centripetal force around which American culture revolves.

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Yet falling transport costs have made this centripetal force less important over the past half-century, leaving many industrial cities, like Detroit, in deep trouble.

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To get finer shots from a swaying helicopter Segal modified his 360-degree panoramic cameras to spin two revolutions per second, creating a gyro effect whose centripetal force stabilizes the lens.

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