Like toddler and adolescent, the terms embryo and fetus do not refer to nonhumans but to humans at various stages of development. It is scientifically inaccurate to say a human embryo or a fetus is not a human being simply because he is at an earlier stage than an infant. This is like saying that a toddler is not a human being because he is not yet an adolescent. Does someone become more human as he gets bigger? If so, then adults are more human than children, and football players are more human than jockeys. Something nonhuman does not become human or more human by getting older or bigger; whatever is human is human from the beginning, or it can never be human at all. The right to live does not increase with age and size; otherwise, toddlers and adolescents have less right to live than adults.