Vivek Ranadivé is an elegant man, slender and fine-boned, with impeccable manners and a languorous walk. His father was a pilot who was jailed by Indira Gandhi, he says, because he wouldn’t stop challenging the safety of India’s planes. Ranadivé went to M.I.T., because he saw a documentary on the school and decided that it was perfect for him. This was in the nineteen-seventies, when going abroad for undergraduate study required the Indian government to authorize the release of foreign currency, and Ranadivé camped outside the office of the governor of the Reserve Bank of India until he got his way. The Ranadivés are relentless.