Wollen (Libertarianism and conjoined twins) argues that libertarianism premised on absolute property rights founders where physical boundaries between two persons cannot be discerned, as is the case with conjoined twins. In this rejoinder, we make a three-pronged argument against Wollen’s claim. First, it is demonstrated that even if conjoined twins really do not hold self-ownership rights against one another, they still have one bodily ownership right against the rest of the world. Second, two alternative resolutions of Wollen’s hypothetical dispute between (...) conjoined twins that derive from two different versions of libertarianism are set forth. Third, it is shown that the quandaries engendered by the existence of conjoined twins not only are not specific for libertarianism but there also are political philosophies to which conjoined twins pose even greater a challenge. (shrink)