When the Royal Court published an apology at the weekend for giving a Jewish name to an unscrupulous billionaire in a play, it was greeted with some derision. The theatre said the ‘mistake’ was a result of ‘unconscious bias’. But how could the name Hershel Fink not be instantly identifiable as Jewish? (There’s a Jewish joke that begins: ‘My name’s Fink, whaddya think?’) And why did it not occur to anyone that associating Jews with power, money and unprincipled behaviour is one of the oldest antisemitic clichés in the book?