In Joe’s thought experiment, the “party” is (happy) life itself, and creating a new happy life is “inviting” an extra person to that party.
I agree with you that people who don’t exist are unable to care about things. There isn’t a concrete list of hypothetical people who we can say are “missing out” on a happy life by not existing. And we can’t ask the non-existent version of Michael whether he would like to exist.
But I don’t think it follows that there is no benefit to creating additional happy lives. I think the extra happiness is still valuable even if we can’t point to a coherent counterfactual where someone in particular would have “missed out” on the happiness. We can ask the version of Michael who does exist whether he’s glad to be alive, and by assumption his answer will be positive.
My intuition is that it does matter whether there are 10 or 1000 people enjoying a party because those extra 990 enjoyable experiences are separate from one another (and from the first 10) and each is valuable by itself. (For what it’s worth, my intuition would be much weaker if we specified that all 1000 experiences were completely identical.)
In Joe’s thought experiment, the “party” is (happy) life itself, and creating a new happy life is “inviting” an extra person to that party.
I agree with you that people who don’t exist are unable to care about things. There isn’t a concrete list of hypothetical people who we can say are “missing out” on a happy life by not existing. And we can’t ask the non-existent version of Michael whether he would like to exist.
But I don’t think it follows that there is no benefit to creating additional happy lives. I think the extra happiness is still valuable even if we can’t point to a coherent counterfactual where someone in particular would have “missed out” on the happiness. We can ask the version of Michael who does exist whether he’s glad to be alive, and by assumption his answer will be positive.
My intuition is that it does matter whether there are 10 or 1000 people enjoying a party because those extra 990 enjoyable experiences are separate from one another (and from the first 10) and each is valuable by itself. (For what it’s worth, my intuition would be much weaker if we specified that all 1000 experiences were completely identical.)