Another reason for making these exceptions allow for those cases in which the permissibility of abortion is compatible with the argument of this essay.
In addition, because the fetuses we are concerned with do not, after all, belong to another species, they are clearly human.
Thus, the syllogism that generates the conclusion that fetuses have the right to life is apparently sound.
WHY THE DEBATE OVER ABORTION SEEMS INTRACTABLE Symmetries that emerge from the analysis of the major arguments on either side of the abortion debate may explain why the abortion debate seems intractable. Of course, women have the right to control their own bodies, but the right to life overrides the right of a woman to control her own body. Thomson's View Judith Thomson (1971) has argued that even if one grants (for the sake of argument only) that fetuses have the right to life, this argument fails.
Consider the following standard anti-abortion argument: Fetuses are both human and alive. Thomson invites you to imagine that you have been connected while sleeping, bloodstream to bloodstream, to a famous violinist.