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EyeSprout t1_iyofnq7 wrote

Reply to comment by [deleted] in How to solve moral problems with formal logic and probability by beforesunset1010

The stability condition itself is an independent concept from "ideal" morality. I was using the idea of an "ideal" system of morality for reference because it's what people seem to be most familiar with, even if most people here probably don't believe in the existence of an ideal set of moral rules themselves.

As I said, the stability condition doesn't uniquely define a set of moral rules, it's possible that multiple different sets of moral rules can satisfy it at the same time. Different people with different values will still arrive at different sets of moral rules that all satisfy the stability condition.

A rationale behind caring about the stability condition in a system of morality is that actual systems of morality and ethics all tend to approximately follow the stability condition, due to evolutionary pressures. A moral system that is not (approximately) stable in practice won't persist very long and will be replaced by a different system. So the stability condition is "natural" and not arbitrarily decided by some individual values. Few conditions like that exist, so it's a valuable tool for analyzing problems of morality.

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[deleted] t1_iyokw2u wrote

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EyeSprout t1_iyom6dr wrote

Absolutely stability is difficult since the world is constantly changing, but the change is slow enough that evolution does tend to produce approximately stable systems. That's a straightforward result of the math; less stable states change quickly and therefore your system spends less time in them.

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[deleted] t1_iyomgr2 wrote

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EyeSprout t1_iyon8r9 wrote

The oxygen catastrophe is possibly the worst possible counterexample you could pick here. The oxygen catastrophe happened slowly enough for all forms of life to settle in niches, enough for game theory to direct evolution, and for a stability condition to apply. Those niches were approximately stable while they existed.

That's all that the stability condition needs to be applied. It's not some complicated concept.

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[deleted] t1_iyonzdu wrote

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EyeSprout t1_iyopym1 wrote

For example, in iterated prisoner's dilemma "always cooperate with your opponent" is not stable, because your opponent's optimal strategy against that is to defect every turn. The simulation I linked in my original comment shows a ton of strategies that are not stable and shows quite directly how they would quickly get eliminated by evolution.

For a simple example in evolution, most mutations harm the organism and are unstable. If most organism in a population had a very harmful mutation and a small population didn't, that small population would quickly take over the larger population. Hence, that mutation is unstable.

A slightly nontrivial example would be blind altruism in a situation where your species is severely starved of resources. If most animals were blindly altruistic and a small number of animals were not and would take advantage of the altruistic animals, then again, that small number would outcompete the larger population. So blind altruism isn't stable.

Of course we can't find many real-life examples; that is because they tend to be quickly eliminated by evolution. If they exist, it's usually only temporary.

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EyeSprout t1_iyos2ps wrote

Ah, wait, just in case... when I say "stability" it has nothing to do with stability of government and things like that. I meant it in more of the physics sense, that small perturbations wouldn't cause a large effect.

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