Did you see Benedict Cumberbatch play Dominic Cummings (director of the Leave campaign) in 'Brexit: The Uncivil War' last week (Channel 4)? Cummings' wife, Mary Ward, has written (in The Spectator/The Week) about watching the actor prepare for the role. When he came to dinner he tried to understand Cummings' view of Brexit, and also absorbed the details of his body language. Afterwards Ward talked to Cumberbatch about the process of inhabiting a person intellectually and physically: does adopting someone's posture help you think like them? Cumberbatch replied, "That's it, yes. I think posture affects everything from heartbeat to intake of breath to the way you think."