 Heim (1982) observed that (20) (unlike (19)) implies that a unique man entered the room and that (20) will therefore be false if two men enter the room. The question is, is there some way to answer this objection and retain the descriptive analysis of anaphora? Davies (1981), Lappin (1989), Neale (1990, chapter 6), Krifka (1996), and Yoon (1996) explored the possibility that the descriptive pronouns are in fact numberless—that is, the pronoun in (20) might in fact be proxy for something like ‘the man or men who enter’. (See Kanazawa (2001) for a literature review and criticism of this idea.)