"What mainly won me over was learning more about embryological and foetal development," she explains, "but I was also very influenced by pro-choice philosophers like Peter Singer whose views are consistent, but have consequences that I think are abhorrent." (Known for his work on bioethics and animal rights, Singer argues that foetuses lack personhood as they are neither rational nor self-aware, and that newborn babies also lack the essential characteristics of personhood. He also supports voluntary euthanasia, is an outspoken atheist, and is, in general, a pro-lifer’s worst nightmare
.) O’Rourke said: "Compared to that position, the 'human rights for all humans' one just seemed self-evidently better. It’s actually the position that a good number of the early feminist activists held too."