In his essay on “Milibandism” in this week’s NS, Neil O’Brien describes the Labour leader as a man “deeply torn between pragmatism and radicalism”. On last night’s Newsnight, it was the radical on show. Asked by Kirsty Wark what his father, the late Marxist theorist Ralph Miliband (profiled in 2010 by our culture editor Jonathan Derbsyshire) would have made of the rate-rigging scandal, Miliband replied: