Damien Enright: Sentinelese are the experts at self-isolating

Indian authorities recognises the remote islanders' desire to be left alone and restrict their role to remote monitoring

North Sentinelese islanders on a remote tribe off India. They have no contact with the tribes of other islands and their language is unknown and unclassifiable.

We marvel at the instinct of wild creatures. Humans have instinctive reactions, too. A casebook example is the rejection of any contact with the modern world by the only Palaeolithic tribe surviving on earth. 

Right or wrong, they have chosen isolation for millennia. They are the last humans on earth to remain virtually untouched by modern civilisation.