When Otto Neurath died in Oxford some 80 years ago, far away from his native Vienna, he was still finding his feet in exile. Like many a Jewish refugee, the economist, philosopher and sociologist had been interned as a suspected enemy alien on the Isle of Man, along with his third wife and close collaborator Marie Reidemeister, having chanced a last-minute life-saving escape from their interim hideout in the Netherlands across the Channel in a rickety boat in 1940. Thanks to Neurath’s pioneering use of pictorial statistics – or “Isotypes” as Reidemeister called them, an acronym for “International System of...