The Only Way to Do It Is to Undo It

Every day we “do” many activitie that we can “undo” by reversing the initial procedure. For instance, we turn on a light (do), and we turn off the same light (undo). We sit down (do). and we tand up (undo). In the evening, we go to sleep (do). and the next morning, we wake up (undo). Each undoing activity cancels or neutralizes what each doing activity ha accomplished. Figure I illustrate the relationship between doing and undoing.