The latest episode of the long-running BBC political debate featured AI-generated guests from history – for which it has been widely ridiculed. But, says John Rentoul , a few more innovations might be just the thing to revive the flagging format T he best bit of last night’s BBC Question Time episode – featuring AI-generated versions of historical figures – was when Mohandas Gandhi brought up that time in 1931 when Winston Churchill called him “a seditious Middle Temple lawyer, now posing as a