Text: What's striking, as Sharon Hays recently pointed out in The Cultural Contradictions of Motherhood (1996), is how tenaciously we cling to intensive motherhood, as she calls this ambitious mission, despite its increasing impracticality and despite how guilty it can make us feel.
Entailment: Intensive motherhood can make us feel bad about ourselves.
Contradiction: Sharon Hays recently pointed out in The Cultural Age of Motherhood (1996).