Nell had a rough idea of what unique was, but Harv didn't, and so Rita 
explained it for a while as they walked through Dovetail. At some length it 
dawned on both Nell and Harv that Rita was actually trying to tell them, in the 
most bewilderingly circumspect way imaginable, that she didn't want them to run 
around and break stuff. This approach to child behavior modification was so at 
odds with everything they knew that, in spite of Rita's efforts to be pleasant, 
the conversation was blighted by confusion on the children's part and 
frustration on hers. From time to time her freckles vanished as her face turned 
red.