Will artificial intelligence change how we shop and decide which retailers succeed? Senior retail executive, Jeremy Schwartz, meets chat bots, robots and the humans behind them, to find out. He explores the impact that the AI revolution may have on jobs - not just the number of them but their nature too. As algorithms take over certain tasks, he asks how humans - and the companies that employ them - will need to respond. And he looks at the growing digital divide between retailers and asks what role AI is playing in the struggle for survival on our high streets. Producer : Rosamund Jones.