Abortion advocates often argue that it is acceptable for a woman to abort her pregnancy if she cannot afford to raise a child. While they are careful to use noble and compassionate language, they are essentially arguing that if a baby is going to be too expensive, the mother has a right to kill it. Such rationale falls apart on many levels, but we'll start with the most fundamental. Like so many abortion arguments, this one assumes something about the unborn embryo or fetus that it hasn't proved. It assumes, in fact, the very thing that it must prove before the argument can hold any water.