TN Pandit was the first anthropologist to enter the isolated Andaman island of North Sentinel, back in 1967. He says he was surprised when he heard that an American evangelist, John Allen Chau, had been killed by the Sentinelese. Speaking to ET at his residence in New Delhi, 83-year-old Pandit narrated his experiences of interacting with the Sentinelese, among the few remaining isolated tribes in the world. The tribe is not hostile, nor do they raid their neighbours, Pandit says.They only say, ‘leave us alone.’ They make it amply clear that outsiders are not welcome in their habitat. One needs...