TV signals passing through the Stone Age air

From Adam Goodheart’s “The Last Island of the Savages” (The American Scholar, Autumn 2000, 69(4):13-44):

The gift-dropping missions had ended in 1996. There was still no television set on North Sentinel; it remained, like Prospero’s island, a place where the air shimmered with invisible signals, with unseen Hindi soap operas and Thai music that drifted, unheard, across the Andaman Sea.