8 karma · joined December 28, 2018
Still, physiological responses are not the best indicator of mental states - plants and primitive animals (from sponges to bivalves) have them too, despite lacking the neurological development necessary for (or evolutionary need for) "consciousness".
Especially the ability to experience suffering might offer reasonable basis for approaching ethical questions.
In terms of animal rights this is as simple as assuming that at least most vertebrae experience mental states, incl. suffering, from at least shortly after birth (which we can safely do)
In terms of abortion, this still leaves us with the additional question of weighing contrary interests of 2 individuals. This is trivial when weighing the interests of pregnant person vs sth like a 10-week fetus (obviously incapable of experiencing mental states) but maybe not sufficient for arguments about 30+ weeks fetuses, depending on personal values