 In (37a) the presupposition triggered by “the person” clearly requires a salient discourse referent to hook on to; the sentence would be infelicitous when uttered out of the blue. The same goes for the presupposition triggered by “too” in (37b), viz. that some salient person different from Wilma is pregnant. This sentence would be very peculiar when uttered out of the blue, or in any context where no salient person was under discussion who could be pregnant. Put otherwise: unlike the presuppositions we have seen thus far, it is very hard to deal with the presuppositions of “the person” or “too” by accommodation  alone.[21]  Why should this be so?