“..If you place a frog in a pot of boiling water, it will immediately try to scramble out. But if you place the frog in room temperature water, and don’t scare him, he’ll stay put. Now, if the pot sits on a heat source, and if you gradually turn up the temperature, something very interesting happens. As the temperature rises from 70 to 80 degrees F., the frog will do nothing. In fact, he will show every sign of enjoying himself. As the temperature gradually increases, the frog will become groggier and groggier, until he is unable to climb out of the pot. Though there is nothing restraining him, the frog will sit there and boil. Why? Because the frog’s internal apparatus for sensing threats to survival is geared to sudden changes in his environment, not to slow, gradual changes...” Peter Senge in The Fifth Discipline : The Art and Practice of the Learning Organization