This makes it sound like killing members of one's own species is not part of descendants of LUCA. But all sorts of organisms and species have no prohibition against killing their own species, even their own young.Veritas Aequitas wrote: ↑Wed Apr 12, 2023 4:48 am If the Last Universal Cell Ancestor [LUCA] within the primordial soup did not have this inherent 'moral' inhibitors "not to kill its own kind", we would not be here to day.
- The Last Universal Common Ancestor (LUCA) or universal most recent common ancestor (UMRCA) is the most recent population from which all organisms now living on Earth share common descent—the most recent common ancestor of all current life on Earth. -wiki
Whatever works - not whatever is moral - is the order of the day. Or, to be more careful, whatever did not lead to a species becoming extinct survived as patterns and traits. Some positive traits, some neutral, some not negative enough to ruin it for the species as a whole.
https://www.sciencefocus.com/nature/do- ... n-species/
https://www.sciencefocus.com/nature/mee ... -on-earth/
And while the meercats tend to outkill us, primates are pretty regular murderers.
There are many species where killing one's own species' members is much less likely. As far as we know, bats, whales, and rabbits, as a few examples, almost never kill their own species' members.
So, where does this leave us in figuring out if oughtness not to kill is an objective fact. It seems like some or even a lot of killing works fine for some species, like ours.
And for other species the oughtness not to kill is very, very dominant.
This sounds NOTHING objective morality, but rather a projection of VA's morality onto patterns in some species.
And the whole LUCA argument is at the very best radically oversimplified.
Even some bacilli will eat their own species. More complicated species murder. If one reads VA, it would seem like there is some built in rule going back in time.
But there isn't.
There are a diverse set of behavior patterns, diverse both intraspecies and interspecies.
IOW VA could, possibly, at best, make an argument that there are some....SOME restrictions on murder in a species. But there is absolutely no evidence in brains or dna or evolution that murder is an objective moral wrongdoing. Nor that eliminating murder is good, per se, for a species. In fact, there is no reason not to just let murder continue to be a facet of human behavior, if we are looking at things from a biological, genetic viewpoint. It has worked well for us up to this time to be like this. It works for other species as well.
Note: this is not me arguing that murder is good. It's me saying that the research VA puts out does not support what he thinks it does. Not if one looks at other research that is part of the same field.
He's a cherry picker.
If oughtness not to kill neurons show that not killing other humans is an objective moral fact, oughtness to kill other humans, even in murder situations are also an objective moral fact. Our species has evolved with both these neurons, which VA acknowledges, and many other species also have murder as a part of their behavior'. This would mean a mix of empathetic and violent responses is an objective moral fact. And really there is no basis for VA calling people less moral than they should be today and wanting to make us more moral in the future. Nor is there any justification for saying, given HIS argument, that murder is wrong. It's a part of the objective mix of our behavioral patterns, neurons and attitudes for thousands of years and likely long before that.