Wyrd SistersThe sixth Discworld novel. Pratchett uses his other world to hold up a distorting mirror to our own . . . he is a satirist of enormous talent The Times The Discworld is very much like our own if our own were to consist of a flat planet balanced on the back of four elephants which stand on the back of a giant turtle, that is . . . Destiny is important, see, but people go wrong when they think it controls them. It's the other way around. Three witches