ABSTRACT
Matteo Fargion, Adrian Heathfield, Nigel Hinds and Chrysa Parkinson have given advice and encouragement while I was writing, and Julia Carruthers has been an always reliable repository of grammatical sense. The following people also helped me to find or clarify things: Ramsay Burt, J. Lesley Crow, Nik Haffner, Christopher House, Fionnuala and Máire Ní Chiosáin, Kristy Nilsson, Daniela Perazzo Domm, Adam Roberts, Remo Rostagno, Noémie Solomon and Philip Thorne.
