In a forest, there was an elephant which was extremely strong and possessed a powerful pair of tusks. One day, a thin and lean man came and trapped the elephant in a cage. The man used to stab the elephant pe riodically with a spiked stick. Soon the elephant became conditioned to the reality that there were only two kinds of experiences in life : pain when the man poked it with the stick, and pleasure in the absence of poking. Thus the man was able to tame the elephant and became the rider of the elephant. After some time, the elephant forgot that there was an alternate reality, in which it had roamed free in the forest, without any fear, and remaining all powerful. One day, when the rider was away, the elephant struggled to free itself. It struggled hard, and after days of intense effort, was able to shatter the cage. The elephant ran towards its freedom. The rider, to thwart the elephant's escape attempt, climbed a tree and jumped down, planning to land on the elephant’s back