A London man is to live the life of another person for 28 days, in an experiment that he hopes will give him insight into the nature of human existence but which experts have called potentially `extremely disturbing’. Mark Farid is set to recruit an `avatar’ or `other’, who will video his whole life for 28 days, and watch all of that video through an Oculus Rift, while people feed him all of the food that his participant eats.