Sunday, January 15, 2017

idioms - Shift the pendulum?


I came across the idiom "shift the pendulum" or "a swing of the pendulum". I suppose the idiom means a major change but I can't understand the point because when you shift the pendulum from the central line, it starts swinging and then gradually stops. There's no major change. Maybe it means to motivate or to start a move. Please help me understand this idiom.




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