Listen-1.0x+0:0016:09Listen to more stories on harkFrosty pine trees rim the edge of an icy lake. Snow is falling; spa music plays in the background. A gray-haired man with a pleasant face stands beside the lake. He begins to undress. He is going swimming, he explains, to demonstrate his faith, and his opposition to science, to technology, to modernity. “I don’t need Facebook; I don’t need the internet; I don’t need anybody. I just need my heart,” he says. As he swims across the lake, seemingly unbothered by the cold, he…