The direct killing of an innocent person is not necessarily murder. We have several examples of this, the most obvious being the civilians that are killed in wars by justifiable bombing raids.
Ender, you misuse the word “direct” here. By definition, those innocent civilians casualties of tactical bombing of military targets are “indirect”. Civilians dying in Hiroshima were arguably direct casualties.
You make it sound as if saving the four comes directly from the death of the innocent person, which of course it doesn’t. The four are saved whether or not the one dies, which is a criterion of PODE - that the good effect does not come about from the evil effect.
You are quite right that the saving of the 4 is not connected to the
actual death of the 1, but it’s also true that the moral object isn’t reliant on the
actual outcome of death. [In many other scenarios, such as chemical injection to treat ectopic pregnancy, the death of the embryo is a required outcome to save mother, though not here. Scraping the embryo from the tube is another alternative treatment - mother’s recovery here is not reliant on death of the child, though that is inherent to the act chosen.] O_mlly does not say that the death of the 1 is the key to saving the 4, but rather that the means is (among other things)
inherently oriented to the death of the 1 (innocent) - that is, the means is a knowingly chosen act of murder. Just as we say the sharp-shooter assassin’s knowing choice is an act of murder from the moment he decides to pull the trigger - even if he misses.
If the saving of the 4 relied on the death of the 1, there is no doubt that the act would be evil. I don’t believe we can say however that because the saving of the 4 does not rely on the death of the 1 that the act is good. The expression of the PODE independently requires simply that the act done must not itself be evil (ie. must be good in itself).
Third, you make way too much of the word “direct”. If I set in motion a series of events that inevitably lead to someone’s death then I am as guilty as if I simply shot him.
Yes, exactly correct. “Direct” does not rely on there being a kind of one-step connection from act to end. I’ve seen the characteristic sometimes described as “morally direct”.
Murder is always evil, but homicide is not always murder.
Murder is morally evil. Every homicide entails at least a human death which is a physical evil (in the consequences) and physical evils are to be minimised or accepted only given the presence of counterbalancing goods.