“I can’t hear anything,” said Nijel loudly. Nijel was one of those people who, if you say ‘don’t look now,’ would immediately swivel his head like an owl on a turntable. These are the same people who, when you point out, say, an unusual crocus just beside them, turn around aimlessly and put their foot down with a sad little squashy noise. If they were lost in a trackless desert you could find them by putting down, somewhere on the sand, something small and fragile like a valuable old mug that had been in your family for generations, and then hurrying back as soon as you heard the crash.