I was reminded of a story I read once about a mother who would listen with her young children to an instructional program on the radio each morning. She particularly enjoyed the exercise class. One day she tuned in late, only to hear an energetic instructor already urging pupils along at a fast pace: “Up…down…circle round…up…down…circle round…up…down…circle round.” She quickly joined in, only to find that the instructor would continue the pace for quite some time. Finally, when she was just about
...