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Zetetic comments on Less Wrong views on morality? - Less Wrong
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Evolutionary Biology might be good at telling us what we value. However, as GE Moore pointed out, ethics is about what we SHOULD value. What evolutionary ethics will teach us is that our mind/brains are maleable. Our values are not fixed.
And the question of what we SHOULD value makes sense because our brains are malleable. Our desires - just like our beliefs - are not fixed. They are learned. So, the question arises, "Given that we can mold desires into different forms, what SHOULD we mold them into?"
Besides, evolutionary ethics is incoherent. "I have evolved a disposition to harm people like you; therefore, you deserve to be harmed." How does a person deserve punishment just because somebody else evolved a disposition to punish him.
Do we solve the question of gay marriage by determining whether the accusers actually have a genetic disposition to kill homosexuals? And if we discover they do, we leap to the conclusion that homosexuals DESERVE to be killed?
Why evolve a disposition to punish? That makes no sense.
What is this practice of praise and condemnation that is central to morality? Of deserved praise and condemnation? Does it make sense to punish somebody for having the wrong genes?
What, according to evolutionary ethics, is the role of moral argument?
Does genetics actually explain such things as the end of slavery, and a woman's right to vote? Those are very fast genetic changes.
The reason that the Euthyphro argument works against evolutionary ethics because - regardless of what evolution can teach us about what we do value, it teaches us that our values are not fixed. Because values are not genetically determined, there is a realm in which it is sensible to ask about what we should value, which is a question that evolutionary ethics cannot answer. Praise and condemnation are central to our moral life precisely because these are the tools for shaping learned desires - resulting in an institution where the question of the difference between right and wrong is the question of the difference between what we should and should not praise or condemn.
First, I do have a couple of nitpicks:
That depends. See here for instance.
This depends on what you mean by "punish". If by "punish" you mean socially ostracize and disallow mating privileges, I can think of situations in which it could make evolutionary sense, although as we no longer live in our ancestral environment and have since developed a complex array of cultural norms, it no longer makes moral sense.
In any event, what you've written is pretty much orthogonal to what I've said; I'm not defending what you're calling evolutionary ethics (nor am I aware of indicating that I hold that view, if anything I took it to be a bit of a strawman). Descriptive evolutionary ethics is potentially useful, but normative evolutionary ethics commits the naturalistic fallacy (as you've pointed out), and I think the Euthyphro argument is fairly weak in comparison to that point.
The view you're attacking doesn't seem to take into account the interplay between genetic, epigenetic and cultural/mememtic factors in how moral intuitions are shaped and can be shaped. It sounds like a pretty flimsy position, and I'm a bit surprised that any ethicist actually holds it. I would be interested if you're willing to cite some people who currently hold the viewpoint you're addressing.
Well, really it's more neuroscience that tells us that our values aren't fixed (along with how the valuation works). It also has the potential to tell us to what degree our values are fixed at any given stage of development, and how to take advantage of the present degree of malleability.
Of course; under your usage of evolutionary ethics this is clearly the case. I'm not sure how this relates to my comment, however.
I agree that it's pretty obvious that social reinforcement is important because it shapes moral behavior, but I'm not sure if you're trying to make a central point to me, or just airing your own position regardless of the content of my post.