Viewers of BBC’s News at Ten were entranced last night when a glitch in its system produced over four minutes of surreal beauty. As the program began, the usual opening rush of clips from around the world accompanied by dramatic music played. A breaking news graphic flew up onscreen and then there was silence. The host, Huw Edwards, sat at his desk, patiently awaiting his cue. But the cue was not coming. Instead, the breaking news graphic came up again... and again, and again.