SEOUL, South Korea — The sound of tinkling bells drifts through an alley in central Seoul, an unmistakable sign that a shaman is near -- although in this case the mystic is a robot powered by artificial intelligence. Many South Koreans still place great value in shamanic traditions, which purport to divine a person's future based on the day and time they were born.Practitioners, known as "mudang", wear long, colourful robes and perform dances and chants to commune with the gods -- sometimes even walking on sharp blades to demonstrate their spiritual connection. However, at Vinaida, a cultural products store in the...