Away from nitpicking and back to more serious matters.
A giant in the tech world committed suicide last week. Aaron Swartz, a 26-year-old genius who co-founded RSS and Reddit, was hit with felony charges from downloading scientific articles and making them available to the general public. He would have faced 35 years
in the slammer if convicted. (Even murderers and rapists don't get 35 years for their crimes, but that's a topic for probably the political forum.) The trial weighed heavily on him and apparently became too much.
His very last blog post (from last November) discussed TDK, curiously enough. The last bit is particularly poignant, and he seems to liken himself to the Joker, who points out society's hypocrisies.
The movie concludes by emphasizing that Batman must become the villain, but as usual it never stops to notice that the Joker is actually the hero. But even though his various games only have one innocent casualty, he’s much too crazy to be a viable role model for Batman. His inspired chaos destroys the criminals, but it also terrorizes the population. Thanks to Batman, society doesn’t devolve into a self-interested war of all-against-all, as he apparently expects it to, but that doesn’t mean anyone enjoys the trials.
Thus Master Wayne is left without solutions. Out of options, it’s no wonder the series ends with his staged suicide.