Thanks for such an in depth reply! I have two takes on your points but before that I want to give the disclaimer that I’m a mathematician, not a philosopher by training.
First, we’re not saying that the lightcone solution implies we should always save Jones. Indeed, there could still be a large enough number of viewers. What we are saying is this: previously, you could say that for any suffering S Jones is experiencing, there is some number of viewers X whose mild annoyance A would in aggregate be greater than S. What’s new here is the upper bound to X, so A*X > S could still be true (and we let Jones suffer), but it can’t necessarily be made true for any Y by picking a sufficiently large X.
As to your point about there being different number of viewers X in different worlds, yep I buy that! I even think it’s morally intuitive that if more suffering A*X is caused by saving Jones then we have less reason to do so. This for me isn’t a case of moral rules not holding across worlds because the situations are different, but we’re still making the same comparison (A*X vs Y). I’ll caveat this by saying that I’ve never thought too hard about moral consistency across worlds.
Thanks for such an in depth reply! I have two takes on your points but before that I want to give the disclaimer that I’m a mathematician, not a philosopher by training.
First, we’re not saying that the lightcone solution implies we should always save Jones. Indeed, there could still be a large enough number of viewers. What we are saying is this: previously, you could say that for any suffering S Jones is experiencing, there is some number of viewers X whose mild annoyance A would in aggregate be greater than S. What’s new here is the upper bound to X, so A*X > S could still be true (and we let Jones suffer), but it can’t necessarily be made true for any Y by picking a sufficiently large X.
As to your point about there being different number of viewers X in different worlds, yep I buy that! I even think it’s morally intuitive that if more suffering A*X is caused by saving Jones then we have less reason to do so. This for me isn’t a case of moral rules not holding across worlds because the situations are different, but we’re still making the same comparison (A*X vs Y). I’ll caveat this by saying that I’ve never thought too hard about moral consistency across worlds.