Flannel Jesus wrote: ↑Wed Jul 17, 2024 10:51 am
Supervenience is a claim about dependence in changes of one thing on changes in another thing.
Agreed.
The common claim is "mental states supervene on brain states".
That means the following things are true:
If person A and person B have the same brain-state, they have the same mental state.
If person A and person B have different mental states, they must also have different brain states.
I surely hope VA does not read my response, since I don't want him to use anything I say here to defend some of the confused conclusions he has been arriving at. That said, I am more interested in discussing the issue with you, since that seems more likely to get somewhere.
So, that said: I would say that two people cannot have the same mental state, given the differences in, well, their brains or minds or processes. This is being fussy and I realize that in some contexts it might be useful to talk about 'the same brain states' if enough factors are close enough to make this useful.
However, there are potentially situations where person A and person B have different brain states but the same mental state.
YES and this is where supervenience analyses is a problem for moral realism and certain beliefs based on 'oughtnesses' in the brain. I went in this issue here:
viewtopic.php?p=720613#p720613
We have three people, all of whom consider X to be immoral.
Person 1: considers X immoral, and upon examination we find this person is very conformist and wants to fit in. This is all reflected in this person's 'brain state' as shown in MRI sequences.
Person 2: considers X immoral, and upon examination we find this is based on disgust related to bodies. This is all reflected in this person's 'brain state' as shown in MRI sequences.
Person 3: considers X immoral, and upon examination we find this is based on an intuitive sense that if people X, certain problems will arise. This is all reflected in this person's 'brain state' as shown in MRI sequences.
Person 4: considers X immoral, and upon examination we find this is based on an analysis of consequences in carefully thought out cause and effect processes. This is all reflected in this person's 'brain state' as shown in MRI sequences.
Person 5: considers X immoral, and upon examination we find this is based on scriptural injunction. This is all reflected in this person's 'brain state' as shown in MRI sequences.
Even within each of these categories there will be wild variations in images and secondary feelings, hormonal levels, which parts of the brain are engaged, what neurons related to different linguistic aspects of their position, and so on and on.
There is no common oughtness. This oughtness is at best a useful fiction. It is certainly a noumenon, so, according to VA must be false and unreal. It cannot be sensed with devices or without them. All sorts of 'things' will be sensed by the devices. Unlike a 'tumor' say, where one finds 'it' in the image of MRIs. There it is. There will be just a myriad of brain states, all unique. And even granting that these device created images are 'sensory' or dealing with Kantian phenomena, we don't find the oughtness nor have we any scientific justification at all for calling anything in these images an oughtness. Within realist neuroscience we have justifications for calling things neurons and labels associated with certain brain states. But nowhere in the field of neuroscience do we find images of 'oughtnesses' in brains. Not that an instrumentalist would be beholden to such an interpretation/reification/fiction.
The same formulation effectively applies to all other uses of 'supervenience'. So, "moral facts supervene on natural facts" means:
If state A and state B have the same natural facts, they have the same moral facts.
If state A and state B have different moral facts, they must also have different natural facts.
However, there are potentially situations where state A and state B have different natural facts but the same moral facts.
and, of course, as both of us have pointed out. Every moral rule, sentiment, feeling (empathy, rage, whatever) belief, assertion, including all the contradictory ideas and feelings about morality and behavior
supervene on brain states.
So, we have millions of moral facts, including contradictory ones. Morality exists, yes. But no particular moral stance has somehow become a fact.
People who get pIeasure raping have mentaI states that supervene on brain states. This does not mean rape is a moraI fact.
Brain states that lead to aggression are just as common universal as any other brain states, if one wants to build an argument on the commonness of a brain state.
So far, your only example is about the mirror neurons of a person. "If you change the mirror neurons of this person, that changes his moral facts in some way." As far as I can tell, the only moral fact that changes about a person if you change their mirror neurons is how they feel about the morality of various actions.
(adn as an aside, there are other brain patterns that may be more important for empathy.)
A person with a shit load of mirror neurons might be unwilling to break someone's knee caps for the mafia, because it feels wrong.
A person with no mirror neurons might be willing to, because it doesn't really feel like anything at all to break the kneecaps of another human.
Changing mirror neurons affects how people feel about the morality of things they might do. If that's not the kind of "moral fact" you intend to talk about, VA, you aren't doing a good job of clarifying your position.
People are showing curiosity in your ideas but you aren't putting any real effort into clarifying what they are.
We go right to the concIusion.
If state A and state B have the same natural facts, they have the same moral facts.
If state A and state B have different moral facts, they must also have different natural facts.
However, there are potentially situations where state A and state B have different natural facts but the same moral facts.
Give us some more edifying examples of moral supervenience using the above three lines as a guide.
If state A and state B have different aspects and they are associated with different acts, behaviors, attitudes and feeIings in reIation to other peopIe. How do we judge one as moraI and the other as immoraI?
What are the criteria for that judgment, given that both states produce, as VA has argued, moraI facts?
Whatever those criteria are THAT is where he is actuaIIy getting his moraI facts from, not from mentaI states and not from brain states. The entire 'brain justifies some moraIity objectiveIy' is a misdirection that seems to have fooIed even the magician.
If brain states determine moraI facts, then the current state of human interactions is perfect as it is and does not need changing.
Because the brain states, which supposedIy determine moraI facts are the ones that current interpersonaI behavior, attitudes, feeIings and ruIes are supervened on.
This post was written by a human being.
What a coincidence. So was mine.