"Each generation must be born knowing the way", said Olivia. "Yes, when it comes to navigation, they have bigger minds than any one of us - just more distributed through the generations and the kaleidoscope". "Kaleidiscope ?". "It's a collective noun for a group of butteflies."I thought it was swarm." "I went with kaleidoscope". "Such an aesthete." "It's true", said Francis, staring out of the window, smiling.