(There Will Be Spoilers)

Christopher Nolan didn’t major in philosophy in college (or “read philosophy at University,” as the case may be), but he evidently has some familiarity with the subject.  How do I know?  Well, both of his two Batman films thus far have featured famous philosophical thought experiments.

In Batman Begins, we have the well-known trolley experiment, in which a person must imagine that s/he is on a trolley that is barreling down the tracks towards five people (or babies, depending on if your ethics professor is more or less of a sadist) who are tied onto the tracks.  The imaginer can then either imagine that s/he pulls a lever, switching the trolley onto another track that only has one person (or baby) tied to it, or that s/he does nothing, allowing the trolley to kill the aforementioned five.  The utilitarian will say, “I switch the trolley to the new track, because it’s better to kill one person than to kill five.”  The non-utilitarian will say, “I leave the trolley to kill the five, because at least then I am not morally at fault.”  The main ethical question is: “Is there a difference between killing a person and letting a person die?”