to what extent adiga linked the theme of rooster coop in the different episodes of the novel

One of the big issues is how India's social system has changed. Under the caste system, people's fates were predetermined, but they were happy, believing they belonged somewhere. However, the new social structure promises the possibility of social mobility, but actually only offers two social divisions: the rich and the poor. The poor are kept in an eternal state of subservience and servitude to the rich by the mechanism that Balram dubs "The Rooster Coop." However, they are now more unhappy because there is a possibility of social mobility that nevertheless remains out of their grasp. Balram ultimately finds a way to break from the Rooster Coop, but it requires him to compromise his ethics and personality - he has to kill his master and betray his family. That social mobility is a specter captured only through such difficult means is a comment on the unfortunate reality of a world built more on limitations than possibility.