 Are you as good as Tiger Woods at changing your swing? There is a new theory among physicists about how the swing works. Previous theories revolved around the principle of "parametric instability," which pivoted the action of swinging at the middle of the arc, and the rocking forward into a higher center of gravity. Physicist William Case, while watching how children actually swing, has now posited a new principle which physicists call "driven harmonic oscillator." The key to the swing is not in the middle of the arc, but at each end of the arc, where and when the swingers at the same time lean back and throw their feet forward. That's my image statement. As a historian of Christianity, I want the church to lean back–not just back to the 50s, but all the way back through 2000 years of history, all the way back until we're, in the words of that Sunday School song, "Leaning, Leaning, Leaning on the Everlasting Arms." But at the same time and I do mean simultaneously, we must use that energy and power that comes from "learning to lean" to kick forward into the future and Carpe Manana. |
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