i would like to emphasize that the title is a question. if you think you know what the problem is, and have a specific example of the difficulty, discuss it specifically.
that said, im sure that i have objectively and certainly identified the difference between the two: if it creates higher average happiness among all sentient creatures, its good. if it makes that average happiness lower, its bad.
i suppose this will take further specifying if someone can think of an example that cant be answered so easily, but i am willing to run 5 laps around ILP naked if anyone can force me to admit theyve found a moral problem that cant be decided with this.
a lot of the problems are going to stem from the ‘end justifies the means’ silliness which seems to imply that it might be better to wait for worse pain in the future instead of quickly ripping off the band aid today. well, the end obviously does justify the means or else there wouldnt be any question about using those means. the problem is only that the people who are going to be utilizing those means probably cant be trusted to accomplish exactly what they say they will (either because they are shady or because there is probability of failure) and if we give them the authority to do it, we are probably going to run into some unforeseen trouble. (torturing terrorists isnt so bad if theres not the slightest possibility that he is innocent. if that possibility exists, i cant think of anything worse)
so the end justifies the means if you are 100% certain that things will go exactly as planned. the difficulty in assessing those kinds of decisions is not morality but estimating the probability of success and weighing that against the morality of the means, which is like comparing apples and religions.
thats the one problem i can see. and ive solved it, or at least pointed out that the problem is more with side effects than with the actual things being done.
cannibals on a boat? come on why would you die of starvation if you dont have to? why would you let somebody else die of starvation if you dont have to? the only problem with killing them quickly and relatively painlessly is that you dont know that a helicopter isnt five seconds away from saving all three of you. if you know for sure that letting him live will result in all three of you dying a horrible death and that killing him will result in two of you living just fine, youd be stupid to let all three of you die slowly, youd be better off stabbing all three of you to death than starving. and if we can assume that the adults are the least fragile, their choice of victim was good as well.
next. Dr Satan im looking at you.