"I prepared an analysis of the girls' usage habits, which were largely 
obscured by the inherent secrecy of the media system, but which can be inferred 
from the bills we paid to hire the ractors. It became clear that, in the case 
of Elizabeth, the racting was done by hundreds of different performers. In 
Fiona's case, the bills were strikingly lower because much of the racting was 
done by someone who did not charge money for his or her 
services—probably her father. But that's a different story. In Nell's 
case, virtually all of the racting was done by the same person."