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Manuel del Rio's avatar

I get very frustrated with these sorts of arguments about intuitions. Like, if anyone's argument reduces to 'you need to have x intuition' and intuitions are all you have to base your opinion, I just don't care about what you do. Your field is of no value/interest/truth-potential producing to me whatsoever.

As for what evidence I'd personally admit for moral truths, it is rather easy. First, empirical evidence, like that of the natural sciences. Second, lacking that, something like indispensability of mathematics in the physical sciences. Third, perhaps (more tentative in this one), a solid, watertight, irrefutable logical argument that all arguments for ethical antirrealism are logically inconsistent and self-contradictory. If you have none of these, I am sorry, I will be “deliberatively out of reach” of any such arguments.

Typo here, btw: "Since I think the notion of irreducibly normativity is meaningless, I don’t think it’s possible in principle for there to be any evidence for it, even broadly construed". You mean 'irreducible'.

"This was a direct response to my original note where I made a shortened version of the some of the remarks above," -> of some of the remarks...

"Note only" -> Not only

"how the is that not the sort of thing" -> How is that...

"and either are empirical tools aren’t good" -> and either empirical...

Mark Neyer's avatar

I used to be a moral anti-realist, and I'm now in the moral realist camp. I totally understand both the frustration Christian is expressing here, as well as your stance. You believe you're correct and you're not seeing substantive arguments. I also agree that moral realists need to bite the bullet and make predictive claims.

I think the right way to frame moral realism as a predictive claim is to say:

- moral intuitions evolved because they helped our ancestors perpetuate their genes into the future

- thus, moral intuitions are approximations of strategies that actually help genes perpetuate themselves into the future

- thus, if moral realism exists, we should expect some belief structures to lead to thriving, others not to, over very long periods of time. The objective reality that moral intuitions point at is 'what actually works for life, long term'.

So here's a solid prediction i'm happy to make: no "group" that believes morality isn't real is real is going to be able to reliably perpetuate itself into the future more than a few centuries. If morality really is about long term survival and thriving, we should expect that groups will thrive in proportion to how accurately they understand morality.

hat word "group", it problems needs more defining. The time horizons here are necessarily large, because we're talking about perpetuating yourself arbitrarily far into the future, and likely talking about probabilistic outcomes morose than guaranteed outcomes.

No, you can't do experiments on this - but that may be a 'not yet' thing. If we had, say, very realistic reality simulators and could run them for very long periods of time, we maybe very well could put some of these ideas to the test. Or, if we had WAY more written history than we currently do, we could look at which groups are able to keep existing multiple generations and which ones aren't.

The fact that we can't test these ideas now probably has more to do with technological limitations. But, among other things, this theory explains why some traditions from the ancient world - like, say, the Jews, or reading Confucius, ore the teachings of the Buddha - are still around today. Longevity of a set of moral ideas becomes evidence for their fiteddness to moral reality.

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