10 Major Plot Holes You Probably Missed
5. Batman Begins
The Hole: The Microwave Conundrum
Nolan's Bat-trilogy is surprisingly full of mistakes, but he's protected by the ferocious love of his fans. I could well have gone with the "How does Batman get back to Gotham?" plot hole for The Dark Knight Rises here and that it would invariably lead to multiple people commenting that "he's Batman, deal with it" or something equally as asinine.
Anyway, the major problem with Batman Begins is the massive hole in the middle of Ra's Al Ghul and Scarecrow's plot to infect Gotham's inhabitants with toxin by using the microwave emitter to vaporize the infected water supply and making everyone inhale the toxin. Sounds like a good plan, until you realize that most of the human body is made of water, and would have been boiled when the emitter went off, making infection impossible and unnecessary.
For clever villains to miss such a crucial point seems rather silly, but what did we care? Batman was back and darker than ever, and in Nolan we had a director who would make the property a viable concern again after the frivolous mistakes of the older franchise. We were willing enough to ignore that gaping hole for the greater good of the series.