What is Reality?

Brian Cox and Robin Ince are joined by US superstar neuroscientist David Eagleman, Professor Sophie Scott and comedian Bridget Christie to ask what is reality? Is our sense of the world around us a completely personal experience and a construct of our brains? How can we ever know whether what one person perceives is exactly the same as what another person perceives. Is your sense of the world around you an illusion constructed by this extraordinary organ, the brain, that has no direct access to the outside world that it is helping you to understand.