Peter Holmes wrote: ↑Tue Jun 20, 2023 12:16 pm
VA's version of the non sequitur fallacy is this:
Factual premise: Humans are neurologically programmed to think that, morally, X is right/good and Y is wrong/bad.
Moral conclusion: Therefore, morally, X is right/good and Y is wrong/bad.
I think there's another problem.
Let's take the 'oughtness-not-to-kill-humans' neurology.
At this current time, 2023, humans have a neurological set-up. Let's grant there is an 'oughtness not to kill humans'. He has been critical of current humans, seeing most as primitive, except for a few. Clearly since neurology leads to behavior, there are others oughtnesses that conflict with 'oughtness not to kill humans' neurological patterns.
So, we have current brains with whatever ratio or prioritizations of oughtnesses not to kill and oughtnesses to kill or be violent.
He purports to draw his morality out of human neurology. If he is drawing morality out of human brains, well, there they are, as they are now, with a mix. If neurology shows objective moral facts, then the objective moral facts are we generally do not kill other humans, but sometimes some of us do.
Thus the objective moral fact is that we should have the current mix.
If that is the source of objectivity, well, they we have to accept the lay of the land.
But VA does not accept the lay of the land.
He wants us to enhance one oughtness. He thinks we should. The oughtness not to kill should have more dominance in neurology.
SO...he has some other source of objectivity that allow him to say, no those neurological patterns are bad and this one, that I like is good.
So, even granting
Factual premise: Humans are neurologically programmed to think that, morally, X is right/good and Y is wrong/bad.
Moral conclusion: Therefore, morally, X is right/good and Y is wrong/bad.
Let's say this is all correct. This does not allow him to morally judge most current humans, which he does, and also implicitly current human neurological patterns.
He either has no grounds to do this OR he has some objective grounds which he still does not reveal.
I think he just thinks it's obvious, since he has never justified on what grounds he uses neuronal patterns as the source of objective morality, but does not, at the same, time accept current neurological pattern ratios and priorities in current brains.