SUPPOSEDLY, with The Dark Knight Rises, Christopher Nolan has finally arrived at the end of his “Batman Trilogy,” which began with Batman Begins (2005) and continued with The Dark Knight (2008). If only! For the one thing you can count on about him is that Batman, like God, can never die. There is a moment in the new film when Mr. Nolan appears to want to make his audience think that the end of his Batman Trilogy is also the end of Batman, but—spoiler alert!—he knows that we know this would not be a permissible liberty for him to take with the franchise. He is only its temporary custodian, as people are said to be custodians of the earth, and must pass it on undamaged to his successors in generations yet to come. If Batman died, he wouldn’t be Batman. For the same reason, The Dark Knight’s attempt to give him a “darker,” more human side was doomed, in my view, to failure. Batman is not human because he’s not mortal—and the immortals, as everyone knows, are not bound by the same rules that apply to everyone else.