This is a bleak version of looking on the bright side, but what’s astonishing about last week’s vicious stabbing in upstate New York is that such an attack didn’t occur decades ago. However sickeningly incapacitated at present, Salman Rushdie himself would doubtless agree. Having survived unharmed for 33 years under a death sentence – endorsed by a depressingly hefty proportion of Muslims – was no mean feat.