Easier access to birth-control information and devices and to abortion could reduce the number of unwanted children and improve the timing of those whose mothers would have preferred to wait.
Birth control has no effect on the numbers of unwanted children.
mnli hypothesis: Birth control has no effect on the numbers of unwanted children. premise: Easier access to birth-control information and devices and to abortion could reduce the number of unwanted children and improve the timing of those whose mothers would have preferred to wait.