Are we living in a simulation?

You’ve seen and heard it from every science fiction movie or TV programme. You’ve heard it from scientists and philosophers. So are we living in a multiverse? Is there a version of you that’s a billionaire? Or a mass-murderer? Or a talking frog? Or are we, like Elon Musk insists, living in a simulation created by some other intelligent species? To talk about some of these big philosophical, technical and scientific questions, Adrian is joined this week by Dr Mark Mitchison, recently appointed as assistant professor in quantum science at Trinity College Dublin.