Thanks for these points! The idea that people care about more than their wellbeing may be critical here. I’m thinking of a simplified model with the following assumptions: a mean lifetime wellbeing of 5, SD 2, normal distribution, wellbeing is constant through the lifespan, with a neutral point of 4 (which is shared by everyone).
Under these assumptions, AMF gets no “credit” (except for grief avoidance) for saving the life of a hypothetical person with wellbeing of 4. I’m really hesitant to say that saving that person’s life doesn’t morally “count” as a good because they are at the neutral point. On the one hand, the model tells me that saving this person’s life doesn’t improve total wellbeing. On the other hand, suppose I (figuratively) asked the person whose life was saved, and he said that he preferred his existence to non-existence and appreciated AMF saving his life.
At that point, I think the WELLBY-based model might not be incorporating some important data—the person telling us that he prefers his existence to non-existence would strongly suggest that saving his life had moral value that should indeed “count” as a moral good in the AMF column. His answers may not be fully consistent, but it’s not obvious to me why I should fully credit his self-reported wellbeing but give zero credence to his view on the desirability of his continued existence. I guess he could be wrong to prefer his continued existence, but he is uniquely qualified to answer that question and so I think I should be really hesitant to completely discount what he says. And a full 30% of the population would have wellbeing of 4 or less under the assumptions.
Even more concerning, AMF gets significantly “penalized” for saving the life of a hypothetical person with wellbeing of 3 who also prefers existence to non-existence. And almost 16% of the population would score at least that low.
Of course, the real world is messier than a quick model. But if you have a population where the neutral point is close enough to the population average, but almost everyone prefers continued existence, it seems that you are going to have a meaningful number of cases where AMF gets very little / no / negative moral “credit” for saving the lives of people who want (or would want) their lives saved. That seems like a weakness, not a feature, of the WELLBY-based model to me.
Thanks for these points! The idea that people care about more than their wellbeing may be critical here. I’m thinking of a simplified model with the following assumptions: a mean lifetime wellbeing of 5, SD 2, normal distribution, wellbeing is constant through the lifespan, with a neutral point of 4 (which is shared by everyone).
Under these assumptions, AMF gets no “credit” (except for grief avoidance) for saving the life of a hypothetical person with wellbeing of 4. I’m really hesitant to say that saving that person’s life doesn’t morally “count” as a good because they are at the neutral point. On the one hand, the model tells me that saving this person’s life doesn’t improve total wellbeing. On the other hand, suppose I (figuratively) asked the person whose life was saved, and he said that he preferred his existence to non-existence and appreciated AMF saving his life.
At that point, I think the WELLBY-based model might not be incorporating some important data—the person telling us that he prefers his existence to non-existence would strongly suggest that saving his life had moral value that should indeed “count” as a moral good in the AMF column. His answers may not be fully consistent, but it’s not obvious to me why I should fully credit his self-reported wellbeing but give zero credence to his view on the desirability of his continued existence. I guess he could be wrong to prefer his continued existence, but he is uniquely qualified to answer that question and so I think I should be really hesitant to completely discount what he says. And a full 30% of the population would have wellbeing of 4 or less under the assumptions.
Even more concerning, AMF gets significantly “penalized” for saving the life of a hypothetical person with wellbeing of 3 who also prefers existence to non-existence. And almost 16% of the population would score at least that low.
Of course, the real world is messier than a quick model. But if you have a population where the neutral point is close enough to the population average, but almost everyone prefers continued existence, it seems that you are going to have a meaningful number of cases where AMF gets very little / no / negative moral “credit” for saving the lives of people who want (or would want) their lives saved. That seems like a weakness, not a feature, of the WELLBY-based model to me.