In Part 1 of this series, I wrote of the great elephants of India, who, although they have the physical capacity to uproot trees during the day, can be restrained all night long by a piece of twine and a twig. How is this possible? The elephant’s training begins when it is still young and considerably less powerful. Removed from its mother, the elephant is then shackled with an iron chain to a large tree. For days and weeks on end, the baby elephant strains against its restraints, only to find that all exertion is useless. Then slowly, over a...