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A mere arm’s length away from one another, the riders stay steady, thanks to centripetal force and prayers.

A: The evidence suggests that there are centripetal forces that keep metropolitan areas from continually expanding outward, and that centripetal force is going to remain.

Chung’s slice-of-life writing is nicely observed but gentle to a fault, circling around its themes widely and long enough to lose centripetal force.

But he argues they also need the centripetal force of “cultural patriotism,” to balance the centrifugal forces that this diversity ignites.

He pursued engineering first, becoming an artist in 1967 — and he has essentially applied the technique of centripetal force in endless variations for more than five decades in his sculpture practice.