In the course of life, we experience many things that we would rather not experience. We experience getting old, illness (our own or someone close to us), the death of our parents, the fear of our own death, and many similar things. We may experience natural disasters such as floods, earthquakes or hurricanes. We experience a whole range of things that are beyond our control; from minor things like delayed flights, to major things like disease epidemics. We may sometimes feel that life is unfair, or may wonder why life is so difficult at times. Imagine you went to a new gymnasium for some exercise; but it was a very strange gymnasium. All the weights were very light; so light that you could lift any of them with only one finger! Then you tried an Exercise Bicycle. It was a powered bicycle, so you could make it go as quickly as you wanted without any effort at all. Then you tried the walking / treadmill machine and it had a special attachment that supported all your weight; so you hardly needed to move your legs in order to walk on it. You would think that this was a useless gymnasium, because it did not challenge you at all. It would make you weaker, and not fitter and stronger like you wanted.
our control; from minor things like delayed flights, to major things like disease epidemics. We may sometimes feel that life is unfair, or may wonder why life is so difficult at times. Imagine you went to a new gymnasium for some exercise; but it was a very strange gymnasium. All the weights were very light; so light that you could lift any of them with only one finger! Then you tried an Exercise Bicycle. It was a powered bicycle, so you could make it go as quickly as you wanted without any effort at all.