 On the domain restriction proposal, the first use of ‘the book’ cannot have the same domain of quantification as the second use, since that would put two books in the domain of quantification and it would mean that both descriptions in the sentence are incomplete. But one wonders how legitimate a domain-shift analysis is here. Is there really a shift in the domain of quantification between the first utterance of ‘the book’ and the second utterance of that noun phrase? What would count as independent evidence either for, or against, a domain-shift taking place?