WHAT CROSSES THE GLASS In Johannesburg, Gift Hlahane has seconds. The traffic light turns red. Cars stop around him, and he moves between them, working the gap before the city starts again. In South Africa, we call traffic lights robots. Gift has spent years learning what can happen between their red and green. A woman catches his attention. Through the glass, he asks where she gets her nails done. She smiles. Then the light changes, and whateve…