Well, not quite. If you think being dead has positive utility for this creature, this positive utility is not necessarily small. If so, you need to weight the issues in killing against that positive utility.
For example, let’s take “death is painless”—actually, if the negative utility of the painful death is not as great as the positive utility of dying, you would still be justified and obligated to impose that painful death upon the creature as the net result is positive utility.
If you can’t otherwise improve their lives, the death is painless, and murder isn’t independently bad.
Well, not quite. If you think being dead has positive utility for this creature, this positive utility is not necessarily small. If so, you need to weight the issues in killing against that positive utility.
For example, let’s take “death is painless”—actually, if the negative utility of the painful death is not as great as the positive utility of dying, you would still be justified and obligated to impose that painful death upon the creature as the net result is positive utility.
I was just giving what would be sufficient conditions, but they aren’t all necessarily necessary.