 Lewis himself combines his brand of realism about possible worlds with a denial of transworld identities. According to Lewis, instead of saying that George Eliot (in whole or in part) inhabits more than one world, we should say that she inhabits one world only (ours), but has counterparts in other worlds. And it is the existence of counterparts of George Eliot who go in for a career in science rather than novel writing that makes it true that she could have been a scientist rather than a novelist (Lewis 1973, 39–43; 1968; 1986, Ch. 4).