Does anything need to?
I guess you're worried that if the same argument works in both cases then you might end up obliged to give Joe $1M. But those reasons why you should give Joe the money have exactly parallel reasons why you should keep it, and to zeroth order they all cancel out, so no such obligation.
If you look with a bit more detail, then the reasons might be stronger one way than the other; for instance, if you are quite rich and Joe is quite poor, he might benefit more from the money than you would. We don't generally have norms saying you should give him the money in this case for all sorts of good reasons, but instead we have taxation (compulsory) and charity (optional) which end up having an effect a bit like saying that rich people should give some of their money to much poorer people.
In typical cases, (1) if you give Joe a $1M then your loss will be bigger than Joe's gain, so even aside from other considerations you probably shouldn't, and (2) if you kill Joe then Joe's loss will be bigger than your gain, so even aside from other considerations you probably shouldn't. So the simple-minded "do whatever makes people happiest" principle (a.k.a. total utilitarianism, but you don't have to be a total utilitarian for this to be a reason, as opposed to the only possible reason, for doing something) gives the "right" answers in most cases.
Subscribe to RSS Feed
= f037147d6e6c911a85753b9abdedda8d)
A million dollars is a lot more zero-sum than not killing someone - if I give you a million dollars I lose a million dollars. To make the analogy more accurate, you'd need to stipulate that Joe will kill me if I don't kill him.
Also, I don't think it's fair to ignore the fact that for most people, not killing someone is vastly easier to do at non-self-destructive costs. I appreciate that this is a quantitative argument rather than a categorical counterargument, but if we have atheists who base their sense of morality on a vague consequentialism that they can't quite fully articulate, that's still no worse than Robertson's (presumed) divine command theory, and they should be able to make such such arguments without being accused of hypocrisy for not also advocating actions that <i>would</i> score much worse under their vague consequentialism.
No, just that you'll get some benefit from killing him, e.g., you get to have sex with his wife.