Anthony Sattin begins with a quotation from Bruce Chatwin, who famously tried all his life to produce a book about nomads but never quite succeeded (the nearest he got was Songlines). Hoping to persuade Tom Maschler at Cape of the virtues of the project, Chatwin described nomads as ‘a subject that appeals to irrational instincts’ – perhaps not the best way to sell something to publishers, who tend to pride themselves on their rational ones.